A. Field of the Invention

(0001J The invention generally relates to chemically recyclable polymers,

B. Description of Related Art

[00021 Polyolefins have multiple industrial uses. Polyolefins such as polyethylene and polypropylene constitute the largest volume of synthetic plastic produced worldwide. Polyolefins are used in wide variety of materials, such as films, sheets, foams, fibers, toys, bottles, containers, furniture, electronic parts, and plumbing materials.

[00031 An issue with polyolefins is their poor chemical recyclability back to their respective building blocks or monomeric units. For example, the chemical recycling efficiency back to polyolefin building blocks starting from waste plastic is about 40 - 50 %. One reason for this is the chemical recycling process can produce unwanted by-products like aromatics, methane, coke, etc. This means full recycling circularity may not be possible to achieve in the current recycling processes with the polymers currently in use,

SUMMARY OF THE INVENTION

[0004| A discovery has been made that provides a solution to at least some of the problems that may be associated with the chemical recyclability of polymers such as polyolefins. In one aspect, the discovery can include providing polyester copolymers that have polyolefin like properties (e.g., crystallinity, melt temperature (T _m ), etc.), that can readily be recycled to their respective building blocks. This can increase the chemical recycling efficiency when compared with current polyolefin polymers. In one aspect, it is believed that polyester copolymers, containing at least one block containing less than 40, such as 0.01 to 40 ester groups per 1,000 backbone carbon atoms, and having relatively high degree of saturation, can provide polyolefin like properties. Copolymers of the present invention can readily be recycled to the monomers forming the polymer.

[0005J One aspect is directed to a copolymer. The copolymer can contain repeating units of Formula I, and repeating units of Formula Hi

[0006] Z can be a polyolefin group. In some aspects, Z can contain at least 45 carbon atoms, and can have a degree of saturation 97 to 100 %, such as 98 to 100 %. In some aspects, Z can contain 45 to 1 ,000 carbon atoms, such as 50 to 800 carbon atoms, such as 60 to 600 carbon atoms. In some aspects, Z can have a degree of branching (DB) of 0 to 50 %. In some aspects, Z has a DB of 0 to 5 %. In some aspects, Z has a DB of 5 to 50 %. A polyolefin group of Z, can be a polyolefin with one H missing at each of the two ends of the polyolefin backbone chain, where the valency of the terminal carbons are satisfied by bonding with the “-COO-” groups at the two sides of Z. In some aspects, Z can be a linear polyolefin group. In some aspects, Z can be a branched polyolefin group, having a DB of 0.01 to 50 %. In some aspects, Z can contain C1 to C10 hydrocarbon branches. In some aspects, Z can contain €1 to C10 alkyl group branches. In some aspects, the polyolefin group of Z can be a polyethylene, polypropylene, poly(ethylene-propylene), or polyCethylene-co*a-olefin) group. In some aspects, the polyfethylene-co-n-olefii) group of Z can be poly(ethylene-co-I-butene), poly(ethyIene-cfl-I -hexene), or poly(ethylene-co-l-octene) group. In some aspects, Z can be a linear polyethylene group. In some aspects, Z can be a branched polyethylene group containing C1 to C10 alkyl group branches, and a DB of 0.01 to 50 %, In some aspects, branched polyethylene group of Z can have a DB of 0,01 to 5 %. In some aspects, branched polyethylene group of Z can have a DB of 5 to 50 %. to some aspects, Z can be an atactic, isotactic, or syndiolactic polypropylene group. In certain aspects, Z can vary randomly between the repeating units of Formula I. In certain aspects, the number of carbon atoms and/or DB of the Z group, such as a polyolefin group of Z, can vary randomly between the repeating units of Formula I. In certain aspects, i) average number of carbon atoms in the Z groups of the polymer can be 45 to 1000, such as 50 to 800, such as 60 to 600, ii) the Z groups of ^* the polymer can have a polydispersky index of I .5 to 4, preferably 1,5 to 3, more preferably 1,5 to 2,5, and/or iii) the average DB ^' of the Z groups of the polymer can be 0 to 50 mol, %. In certain aspects, Z does not vary' between the repeating units of Formula I.

[0007] The structure of Z can be different than Z\ T can ^" be an aliphatic group. In some aspects, Z’ can have a degree of saturation 97 to 100 %, such as 98 to 100 ¾. In some aspects, Z’ can contain 1 to 1,000 carbon atoms, such as 5 to 800 carbon atoms, such as 10 to 600 carbon atoms. In some aspects, Z’ can have a degree of branching (DB) 0 to 50 %. In some aspects, Z’ has a DB of 0 to 5 %. In some aspects, Z’ has a DB of 5 to 50 %. In some aspects, Z’ can be a linear hydrocarbon. In some aspects, Z’ can be a branched hydrocarbon. In some aspects, Z’ can be a polyolefin group, and can contain 45 to 1,000 carbon atoms, such as 50 to 800 carbon atoms, such as 60 to 600 carbon atoms, A polyolefin group of Z’, can be a polyolefin with one H missing at each of the two ends of the polyolefin backbone chain, where the valency of the terminal carbons are satisfied by bonding with the “-COG*·” groups at the two sides of Z\ In some aspects, Z’ can be a linear polyolefin group. In some aspects, Z’ can be a branched polyolefin group, having a DB of 0,01 to 50 %. In some aspects, Z’ can be a branched polyolefin group having a DB of 0.01 to 5 %. In some aspects, Z ¹ can be a branched polyolefin group having a DB of 5 to 50 %. In some aspects, polyolefin group of Z’ can contain C1 to C10 hydrocarbon branches. In some aspects, polyolefin group of Z’ can contain Ct to C10 alkyl group branches. In some aspects, the polyolefin group of Z’ can be a polyethylene, polypropylene, poly(ethylene-co-propylene), or polyCethylene-co-a-oIefin) group. In some aspects, the poIy(ethyIene-co-a-olefin) group of Z’ can be a poly(ethylene-co-l -butene), poly(ethyIene-co-I-hexene), or poly(ethylene-co-l-octene) group. In some aspects, Z’ can be a linear polyethylene group, In some aspects, Z’ can be a branched polyethylene group containing C1 to C10 alkyl group branches, and a DB of 0.01 to 50 %, such as 0.01 to 5 %, or 5 to 50 %. In some aspects, Z ⁵ can be an atactic, isotactic, or syndiotactic polypropylene group. In certain aspects, Z’ can be a polyolefin group and vary randomly between the repeating units of Formula II, In certain aspects, number of carbon atoms and/or DB of the polyolefin Z’ groups can vary randomly between the repeating units of Formula II. In certain aspects, i) average number of carbon atoms in the polyolefin Z’ groups of the polymer can be 45 to 1000, such as 50 to 800, such as 60 to 600, ii) the polyolefin Z’ groups of the polymer can have a polydispersity index of 1.5 to 4, preferably 1.5 to 3, more preferably 1.5 to 2,5, and/or iii) the average DB of the polyolefin Z’ groups of the polymer can be 0 to 50 mol. %. In certain aspects, polyolefin Z’ groups do not vary between the repeating units of Formula II.

[ 00081 In some aspects, Z’ can be a polyether group. A polyether group can be a polyether with one H missing at each of the two ends of the polyether backbone chain, where the valency of the terminal carbons are satisfied by bonding with the “-COO-” groups at the two sides of Z\ The polyether group can contain 45 to 1,000 atoms (e.g., carbon and oxygen atoms in total) in the polymer backbone. The polyether can be a linear or a branched polyether. In some aspects, Z’ can be a branched polyether group, having a DB of 0.01 to 50 %. The branched polyether can contain C1 to C10 hydrocarbon branches. In some aspects, the branched polyether can contain C1 to C10 alkyl group branches. In some aspects, Z’ can be poly{ethylene oxide), poly(ethylene oxide-co-propylene oxide), poly(ethylene oxide-b/ocfc-propylene oxide), poly(propylene oxide) or polyftetramethylene oxide). In certain aspects, Z’ can be a polyether group and vary randomly between the repeating units of Formula II. In certain aspects, number of carbon and oxygen atoms and/or DB of the polyether Z’ groups can vary randomly between the repeating units of Formula II. In certain aspects, i) average number of carbon and oxygen atoms (in total) in the polyether Z’ groups of the polymer can be 45 to 1000, such as 50 to 800, such as 60 to 600, it) the polyether Z’ groups of the polymer can have a polydispersity index of 1.01 to 2.0, preferably l.l to 1,5 and/or iii) the average DB of the polyether Z’ groups of 4e polymer can be 0 to 50 mol. %.

{0009] In some aspects, Z’ can be a polydimethylsiloxane group. A polydimethylsiloxane group can be a polydimethylsiloxane with one H missing at each of the two ends of the polydimethylsiloxane backbone chain, where the valency of the terminal siloxane are satisfied by bonding with the “-CGO-” groups at the two sides of Z’. The polydimethylsiloxane group can contain 45 to 1,000 atoms (e.g., silicon and oxygen atoms in total) in the polydimethylsiloxane group backbone. In some aspects Z’ can be hydroxy terminated polyfdimethylsiloxane), hydroxy propyl terminated polyfdimethylsiloxane or bis(hydroxyalkyl) terminated polyfdimethylsiloxane). In certain aspects, Z’ can be a polydimethylsiloxane group and vary randomly between the repeating units of Formula II, In certain aspects, number of atoms (e.g., silicon and oxygen atoms in total) in the polydimethylsiloxane group backbone of the polydimethylsiloxane Z’ groups can vary randomly between the repeating units of Formula II. In certain aspects, i) average number of atoms In the polydimethylsiloxane group backbone of the polydimethylsiloxane Z’ groups of the polymer can be 45 to 1000, and/or the polydimethylsiloxane Z’ groups in the polymer can have a PDI of 1.01 to 4.

[0010] In some aspects, Z’ can be a polystyrene, styrene-butadiene copolymer, polybutadiene group, or substituted polybutadiene group. In some aspects, the substituted polybutadiene group can be polyisoprene group. In some aspects, the polystyrene, styrene- butadiene copolymer, polybutadiene group can contain at least 45 carbon atoms, and can have a degree of saturation of the main chain of 60 to 100 %, such as 75 to 100 %. In some aspects, Z’ can contain 45 to 1,000 carbon atoms, such as 50 to 800 carbon atoms, such as 60 to 600 carbon atoms. A polystyrene or styrene-butadiene copolymer or polybutadiene group of Z’, can be a polystyrene or styrene-butadiene copolymer or polybutadiene with one H missing at each of the two ends of the polystyrene or styrene-butadiene copolymer or polybutadiene backbone chain, where the valency of the terminal carbons are satisfied by bonding with the COO-” groups at the two sides of Z’. In some aspects, the polystyrene or styrene-butadiene copolymer or polybutadiene group of Z’ can be a polystyrene, polybutadiene, random poly(styrene-co-butadiene), poly(styrene-Wocfc-polybutadiene) diblock copolymer or poIyistyreoe-WecA-polybutadiene-Woei-styrene) triblock copolymer group. In certain aspects, Z’ can be a polystyrene, styrene-butadiene copolymer or polybutadiene group and can vary randomly between the repeating units of Formula II. In certain aspects, number of carbon atoms in the polystyrene, styrene-butadiene copolymer or polybutadiene Z’ groups can vary randomly between the repeating units of Formula II. In certain aspects, i) average number of carbon atoms in the polystyrene, styrene-butadiene copolymer or polybutadiene Z ⁵ groups can be 45 to 1000 and/or the polystyrene, styrene-butadiene copolymer or polybutadiene Z’ groups in the polymer can have a PDI of 1.01 to 2, preferably 1.05 to 1.5.

(00111 In certain aspects, Z’ groups do not vary between the repeating units of Formula II

[0012] X in each of Formula I and Formula II can independently be an aliphatic group. X in each of Formula I and Fonnula II can independently contain up to 1000 carbon atoms. In some aspects, X in each of Formula I and Formula II can independently be a linear hydrocarbon. In some aspects, X in each of Formula I and Formula II can independently be a branched hydrocarbon. In some aspects, X in each of Formula I and Formula II can independently be a polyolefin group. A polyolefin group of X can be a polyolefin with one H missing at each of the two ends of the polyolefin backbone chain, where the valency of the terminal carbons are satisfied by bonding with the “-0-” groups at the two sides of X. In some aspects, X in each of Formula I and Formula II can independently be a linear polyolefin group. In some aspects, X in each of Formula I and Formula II can independently be a branched polyolefin group having a DB of 0.01 to 50 %. In some aspects, X in each of Formula I and Formula II can independently contain C1 to C _t0 hydrocarbon branches. In some aspects, X in each of Formula I and Formula II can independently be a polyethylene, poly(ethylene- propylene), poly(o-olefin), poly(a-olefin-co-ethylene), or poly(ethylene-co-a-olefm) group. In certain aspects, X in each of Formula I and Formula II can independently be a poly(ethylene- co- 1 -butene), poly(ethylene-co-l-hexene), or poly(ethylene-co-l-octene) group. In some aspects, X in each of Formula I and Formula II can independently be a polypropylene group, or a polybutylene group, or a polyfpropylene-co-etbylene) group. In some aspects, X in each of Formula I and Formula II can independently be an atactic, isotactic, or syndiotactic polypropylene group. In some aspects, X in each of Formula I and Formula GI can independently be a random poly(propylene-co-ethylene) group. In certain aspects, X in Formula I can vary randomly between the repeating units of Formula G. In certain aspects, i) number of carbon atoms in the X groups can vary randomly between the repeating units of Formula I or Hi) the DB of the X groups can vary randomly between the repeating units of Formula L In certain aspects, X does not vary between the repeating units of Formula I. In certain aspects, X in Formula I can vary randomly between the repeating units of Formula II. In certain aspects, t) the number of carbon atoms in the X groups can vary randomly between the repeating units of Formula II or iii) the DB of the X groups can vary randomly between the repeating units of Fonimia II in certain aspects, X does not vary between the repeating units of Formula II.

[00131 In certain aspects, X in each of Formula I and Formula II can independently contain 45 to 1000 carbon atoms. In certain aspects, X in each of Formula 1 and Formula II can independently be a C1 to C41 aliphatic group. In some particular aspects, X in each of Formula I anti Formula II can independently be a C1 to €» aliphatic group. For example, X can have the same or a different structure in each of Formula I and Formula II. In some aspects, X can have (he same structure in Formula I and Formula GI. In some aspects, X can have different structures in Formula I and Formula II In some aspects, X can independently be a linear or branched, and substituted or unsubstituted hydrocarbon in each of Formula I and Formula II. In some aspects, X can independently have the formula of ( 1), (2), (3), (4), or (5), in each of Formula I and Formula II:

10014J In some aspects, X in each of Formula I and Formula 11 can independently be a linear or branched, and substituted or unsubsti luted hydrocarbon. In some aspects, X in each of Formula I and Formula II can independently have the formula of (I), (2), (3), (4), or (5): wherein n’ in formula (l) is an integer from 1 to 1000 and denotes number of repeat units. In certain aspects, if can be an integer from I to 15. hG, n2% u3% n4’, n5% n6% n7% n8% ti9% nl O’, hI G, n 12% and nl3% are independently an integer from 1 to 10, and denote number of repeat units. In some aspects, nl% ii2% ii3% n4% n5% 116% n7% n8% n9% nl0% nil’. nl2% and nl3% are independently an integer from 1 to 5.

10015) In certain aspects, the copolymer can contain i) repeating units of a first unit having the formula of Formula I, and ii) repealing units of a second unit having lire formula of Formula

I, wherein X of the first unit can have a different formula than the X of the second unit In certain aspects, X of the first unit can be a linear hydrocarbon, and the X of the second unit can contain one or more side functional groups. In some aspects, the functional group can be oxy group. The second unit can introduce branching in polymer. The second unit can be bonded to three or more monomers. In some aspects, X of the first unit has the chemical formula of Formula (1 ), and X of the second unit has the chemical formula of Formula (2), (3), (4) or (5). The Z of the first unit and the second unit can be same or different, e. g. can have same or different chemical formula, in some aspects, Z of the first unit and the second unit can have the same formula. In certain aspects, the ratio of mol. % of the first noil and second unit in the polymer can be 9:1 to 999; 1, or equal to any one of, at least any one of, or between any two of 9:1. 10:1, 15; 1, 20: 1, 25:1, 30: 1, 35:1, 40: 1 , 45: 1 , 50; 1 , 55: ! , 60: 1 , 65: 1 , 70: 1 , 75: l, 80; 1 , 85: 1 , 90:1, 95:1, 100:1, 200:1, 300:1, 400:1, 500:1, 600:1 , 700: 1 , 800:1, 900:1, and 999:1, In certain aspects, the copolymer can contain i) repeating units of a third unit having the formula of Formula It, and ii) repeating units of a fourth unit having the formula of Formula II, wherein X of the third unit can have a different formula than the X of the fourth unit. In certain aspects, X of the third unit can be a linear hydrocarbon, and the X of the fourth unit can contain one or more side functional groups. In some aspects, the functional group can be oxy group. The fourth unit can introduce branching in polymer. The fourth unit can be bonded to three or more monomers. In some aspects, X of the third unit has the chemical formula of Formula (1), and X of the fourth unit has the chemical formula of Formula (2), (3), (4) or (5). The Z’ of the third unit and the fourth unit can be same or different, e. g. can have same or different chemical formula. In some aspects, V of the third unit and the fourth unit can have the same formula. In some aspects, X of the first unit and the third unit can be same. In some aspects, X of the second unit and the fourth unit can be same. In some aspects, the first units, second units, third units and the fourth units can be arranged in the copolymer randomly. In certain aspects, the ratio of mol. % of the third unit and fourth unit in the polymer can be 9:1 to 999: 1, or equal to any one of, at leastany one of, or between any two of 9:1, 10:1, 15:1, 20:1, 25:1, 30:1, 35:1, 40:1, 45:1, 50:1, 55:1, 60:1, 65:1, 70:1, 75:1, 80:1, 85:1, 90:1, 95:1, 100: 1, 200:1, 300:1, 400:1, 500:1, 600:1, 700: 1, 800:1, 900:1, and 999:1.

[0016] In some aspects, the number average molecular weight (M _a ) of the copolymer can be 10,000 to 1,000,000 g/mol, such as 20,000 to 500,000 g/mol, such as 40,000 to 200,000 g/mol. The can be determined as the polyethylene equivalent molecular weight by high temperature size exclusion chromatography performed at 160 °C in trichlorobenzene using polyethylene standards. In some aspects, the polymer can have a polydispersity index (PDI), of 1.5 to 4, preferably 1.8 to 3. In some aspects, the copolymer can contain at least one amorphous block, and at least one semi-crystalline block. In some aspects, the block copolymer can contain at least two amorphous blocks, wherein the glass transition temperature (¾ of the two blocks can be different. In some aspects, the units of Formula I and units of Formula II can be arranged in the copolymer randomly, alternatively, or in blocks. In some particular aspects, the units of Formula I and units of Formula II can be arranged in the copolymer randomly. In certain aspects, the copolymer can be a statistical copolymer. [0017f In some aspects, the Z and Z’ groups in the copolymer can such that melt temperatures (T _m ) of a polymer, such as a homopolymer, formed by the Z groups of the copolymer, and a polymer, such as a homopolymer, formed by the Z’ groups of the copolymer, can differ by at least 40 °C, such as 40 °C to 180 °C, such as 85 °C to 170 °C, such as 90 °C to 150 °C. In some aspects, the Zand Z’ groups in the copolymer can be such that glass transition temperature (F _g ) of a polymer, such as a homopolymer, formed by the Z groups of the copolymer, and a polymer, such as a homopolymer, formed by the T groups of the copolymer, can differ by at least; 5 °C, such as by at least 10 °C, such as by at least 20 °C, such as by at least 30 ^Q C, such as by al least 40 °C, such as by at least 50 °C, such as by at least 100 °C, such as at least by 140 °C. In some aspects, the Z and Z’ groups in the copolymer can be such that crystallinity at room temperature of a polymer, such as a homopolymer, formed by the Z groups of the copolymer, and a polymer, such as a homopolymer, formed by the V groups of the copolymer, can differ by at least 5 %, such as by at least 10 %, such as by at least 20%, such as by at least 30 %, such as by at least 40 %. In certain aspects, a polymer, such as a homopolymer, formed by the Z groups of the copolymer, and a polymer, such as a homopolymer, formed by the Z’ groups of the copolymer can be semi-crystalline at room temperature. In certain aspects, a polymer, such as a homopolymer, formed by the Z groups of the copolymer, and the polymer, such as a homopolymer, formed by the Z’ groups of the copolymer can be amorphous at room temperature. In certain aspects, a polymer, such as a homopolymer, formed by the Z groups of the copolymer can be amorphous, and a polymer, such as a homopolyraer, formed by the Z’ groups of the copolymer can be semi-ciyslalliue at room temperature. In certain aspects, a polymer, such as a homopolyraer, formed by the Z groups of the copolymer can be semi-crystalline, and the polymer, such as a homopolymer, formed by the Z’ groups of the copolymer can be amorphous al room temperature.

[0018] In certain aspects, the Formula I can be Formula 111, and the Formula P can be Formula IV, and the copolymer can contain repeating units of Formuk III, and repeating units wherein i) n2 can independently be an integer from 0 to 15, such as 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 or 15, for each of Formula HI and IV, and denotes number of repeat mils; u) ml can be an integer from 45 to 1000, or equal to any one of, at least any one of, or between any two of 45, 50, 60, 70, 80, 90, 100, 150, 200, 250, 300, 350, 400, 450, 500, 550, 600, 650, 700, 750, 800, 850, 900, 950 and 1000, and denotes number of repeat units; Hi) ml’ can be an integer from 45 to 800, or equal to any one of, at least any one of, or between any two of 45, 50, 60, 70, 80, 90, 100, 150, 200, 250, 300, 350, 400, 450, 500, 550, 600, 650, 700, 750, 800, 850, 900, 950 and 1000, and denotes number of repeat units; iv) R ¹ can be -H or a C1 to C10 alkyl group, and can vary independently between H and the Ct to C10 alkyl group in the repeating units -CHR ¹ -; v) the -fCHR’fmi _’ - group can have a DB of 5 % or higher, such as 5 to 50 %, or equal to any one of, at least any one of, or between any two of 5, 6, 7, 8, 9, 10, 12, 15, 20, 25, 30, 35, 40, 45 and 50 %; or any combinations thereof. In some aspects, n2 can be 2 for each of Formula III and IV. In some aspects, R ¹ can be -H or -CH3. In some aspects, R ¹ can be -H or -CH2CH3. In some aspects, R ¹ can be -H or a C3 alkyl group. In some aspects, R ¹ can be -H or a C4 alkyl group. In some aspects, R ¹ can be -H or a C,s alkyl group. In some aspects, R ¹ can be -H or a C« alkyl group. In some aspects, R ¹ can be -H or a C _? alkyl group. In some aspects, R ¹ can be -H or a Cg alkyl group. In some aspects, R ¹ can be -H or a C9 alkyl group. In some aspects, R ¹ can be -H or a Ci-o alkyl group. In certain aspects, ml can vary randomly between the repeating units of Formula III, and/or average of m Ϊ s in the polymer can be 60 to 600. In certain aspects, ml does not vary between the repeating units of Formula III In certain aspects, ml’ can vary randomly between the repeating units of Formula IV, and/or average of ml ’s in the polymer can be 45 to 800. In certain aspects, ml ’ does not vary between the repeating units of Formula IV. In certain aspects, DB of the -(CHR ¹ )» _!* - group can vary randomly between the repeating units of Formula IV, and/or the average DB of the - (CHR%i- groups of the polymer can be 5 to 50 %. In certain aspects, DB of the -(CHR¾i— group between the repeating units of Formula IV does not vary.

[0019] In certain aspects, the Formula I can be Formula V, and the Formula II can be

Formula VI, and the copolymer can contain repeating units of Formula V, and repeating units of Formula VI, Formula VI, wherein i)n3 can independently be an integer from 0 to 15, such as 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14- or IS, forrach of Formulas VandVI.anddeitotes number of repeat units; ii) m2 CM be an integer from 60 to 600, or equal to anyone of, at least any one of, or between any two of 60. 70,80, 90, 100, 150, 200, 250.300, 350,400, 450, 500, 550, and 600, and denotes number of repeat units; iii)q’ canbe an integer from 25 to 200, and 50to I25, or equal toany one of, at least anyoneof or between any two of25, 30,40,50,60.70.86.90, 100, 125, 150, 175 Md 200, and denotes number of repeat units; or any combinations thereof Y* and Y ² are independently a C1-C10 hydrocarbons and Y ^l and Y ¹ can be die same or different, ql ¹ and q2’ are integer, and can be independently 0 or L Tn some aspects, Yl and Y2 can independently be ^H can be an integer from I td 10. nl * and n2" can independently be and integer item 0 to 4. In some aspects, n3 can be2 tor each of Formula V and VI In certain aspects, m2 can vary randomly between the repeating units of Formula V, and/or the average of m2s in the polymer can be 60to 600. Or equal toany one of at least any oneof, or between My two of 60, 70, 80, 90, 100* 150,200* 250,300* 350, 400, 450, 500, 550, and 600. In certain aspects, m2 does not vary between toe repeating units of Formula V. to certain aspects, q’ can vary randomly between toe repeating units of Formula VI. and/or average of q’s in toe polymer can be 25 to 200, or equal to any one of at least any cate of or between any two of 25, 30, 40, 50.60. 70,80. 90. 100, 125* 150* 175 and 200. Tn certain aspects, q’ does not vary between toe repotting units of Formula VI. [00201 In certain aspects, the Formula I can be Formula VII, and the Formula II can be Formula VIII, and the copolymer can contain repeating units of Formula VII, and repeating units of Formula VIII

Formula VIE, wherein, i) ti4 can independently be an integer from 0 to 15, such as l, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 or 15, for each of Formulas VII and VIII, and denotes number of repeal units; it) ft ² can be -H or a C1 to C10 alkyl group, and varies independently between H and the C1 to C10 alkyl group in the repeating units -CHR7- ; iii) the -(CHR ² ) _mj - group can have a DB of 0.0! lo 50 %, or equal to any one of, at least any one of, or between any two of 0.01, 0.1, 1, 2, 3, 4,

5, 6, 7, 8, 9, 10, 12, 15, 20, 25, 30, 35, 40, 45 and 50; tv) m3 can be an integer from 45 to 600, or equal to any one of, at least any one of, or between any two of 45, 50, 60, 70, 80, 90, 100, 150, 200, 250, 300, 350, 400, 450, 500, 550,, and 600, and denotes number of repeat units; v) m3’ can be an integer from 20 to 497, or equal to any one of, at least any one of, or between any two of 20, 25, 30, 35, 40, 50, 60, 70, 80, 90, 100, 150, 200, 250, 300, 350, 400, 450, and 497, and denotes number of repeat units; or any combinations thereof. In some aspects, n4 can be 2 for each of Formula VII and VIII, In some aspects, R ² can be -H or ~€Hh. In some aspects, R ^a can be -H or In some aspects, R ² can be -H or a €3 alkyl group. In some aspects, R ² can be-H or a C4 alkyl group. In some aspects, R ² can be-H or a Cj alkyl group. In some aspects, R ² can be -H or a Co alkyl group. In some aspects, R ² can be -H or a €7 alkyl group. In some aspects, R ² can be -H or a Cg alkyl group. In some aspects, R ² can be -H or a Cg alkyl group. In some aspects, R ² can be -H or a C10 alkyl group. In certain aspects, m3 can vary randomly between the repeating units of Formula VII, and/or average of m3$ in Hie polymer can be 45 to 600, or equal to any one of, at least any one of or between any two of 45, 50, 60, 70, 80, 90, 100, 150, 200, 250, 300, 350, 400, 450, 500, 550, and 600, In certain aspects, m3 does not vary between the repeating units of Formula VII, In certain aspects, DB of the - (CHR ² ) _m 3- group can vary randomly between the repeating units of Formula VII, and/or the average DB of the -(CHR^VJ- groups of the polymer can be 0.01 to 50 %, or equal to any one of, at least any one of, or between any two of 0,01, 0,1, I, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 15, 20, 25, 30, 35, 40, 45 and 50 %. In certain aspects, DB of the -|CHR ² ) _t «3- group between the repeating units of Formula ¥11 does not vary. In certain aspects, m3’ can vary randomly between the repeating units of Formula VIII, and/or average of oi3’s in the polymer can be 20 to 497, or equal to any one of, at least any one of, or between any two of 20, 25, 30, 35, 40, 50, 60, 70, 80, 90, 100, 150, 200, 250, 300, 350, 400, 450, and 497. In certain aspects, m3’ does not vary between the repeating units of Formula VIII

(0021] In certain aspects, the Formula I can be Formula IX, and the Formula II can be Formula X, and the copolymer can contain repeating units of Formula IX, and repeating units of Formula X,

Formula X wherein i) n5 can independently be an integer from 0 to 15, such as 1, 2, 3, 4, 5, 6, 7, 8, 9, 10,

I I, 12, 13, 14 or 15, for each of Formulas IX andX, and denotes number of repeat units; ii) R ³ can be -H or a C1 to C10 alkyl group, and varies independently between -H and the C1 to C10 alkyl group in the repeating units -CHR ³ - ; Mi) the -<CHR ³ ) _n ,4- group can have a DB of 0.01 to 50 %, or equal to any one of, at least any one of or between any two of 0.01 , 0.1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 15, 20, 25, 30, 35, 40, 45 and 50 %; iv) tn4 can be an integer from 60 to 600, or equal to any one of at least any one of or between any two of 60, 70, 80, 90, 100, 150, 200, 250, 300, 350, 400, 450, 500, 550, and 600, and denotes number of repeal units; v) m4 ⁵ can be an integer from I to 332, or equal to any one of, at least any one of, or between any two of 1, 5, 10, 15, 20, 25, 30, 35, 40, 50, 60, 70, 80, 90, 100, 150, 200, 250, 300, and 332, and denotes number of repeat units; vi) R ⁴ is a C1 to C10 alkyl group; or any combinations thereof. In some aspects, o5 can be 2 for each of Formula IX and X. Iu some aspects, R ^J can be -H or -CHj. In some aspects, R ³ can be -H or -CH2CK3. In some aspects, R ³ can be -H or CX alkyl group. In some aspects, R ³ can be -H or a €4 alkyl group. In some aspects, R ³ can be -H or a Cs alkyl group. In some aspects, R ³ can be -H or a C ₆ alkyl group, In some aspects, R ³ can be -H or a Ci alkyl group. In some aspects, R ³ can be -H or a Cs alkyl group. In some aspects, R ³ can be -H or a C«j alkyl group. In some aspects, R ³ can be -H or a Cur alkyl group. In certain aspects, m4 can vary randomly between the repeating units of Formula IX, and/or average of m4s in lire polymer can be 60 to 600, or equal to any one of, at least any one of or between any two of 45, 50, 60, 70, 80, 90, KM), 150, 200, 250, 300, 350, 400, 450, 500, 550, and 600. In certain aspects, m4 does not vary between the repeating units of Formula IX. In certain aspects, DB of the -(CHR ³ )^- group can vary randomly between the repeating units of Formula IX, and/or the average DB of the -{CHR ³ ) _m4-~ groups of the polymer can be 0.01 to 50 %, or equal to any one of, at least any one of, or between any two of 0.01, 0.1, l, 2, 3,4, 5, 6, 7, 8, 9, 10, 12, 15, 20, 25, 30, 35, 40, 45 and 50 %. In certain aspects, DB of the -{CHRV- group between the repeating units of Formula IX does not vary. In certain aspects, m4’ can vary randomly between the repeating units of Formula X, and/or average of m4’s in the polymer can be 1 to 332, or equal to any one of, at least any one of, or between any two of 1 , 5, 10, 15, 20, 25, 30, 35, 40, 50, 60, 70, 80, 90, 100, 150, 200, 250, 300, and 332. In certain aspects, m3’ does not vary between the repeating units of Formula VIII .

[0022] In certain aspects, the Formula I can be Formula XII, and the Formula IT can be

Formula XIII, and the copolymer can contain repeating units of Formula XII, and repeating units of Formula XIII,

Formula XIII wherein i) n6 can independently be an integer from 0 to 15, such as 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 or 15, for each of Formula CP and XIII, and denotes number of repeat units; h) in, 5 can be an integer from 60 to 6(10, or equal to any one of, at least any one of, or between any two of 45, 50, 60, 70, 80, 90, 100, 150, 200, 250, 300, 350, 400, 450, 500, 550, and 600, and denotes number of repeat units; Hi) R ⁸ can be -H or a Cs to Cjo alkyl group, and can vary independently between -H and the C1 to C10 alkyl group in the repeating units -CHR ⁸ -; tv) the -<CHR ⁸ )ni5- group can have a DB of 0.01 to less than 5 %, or equal to any one of, at most aoy one o f, or between any two o f 0.01 , 0.1,0.5, 1, 2, 3 , 4, or less than 5 %; v) m5 ’ can be an integer from 5 to 800, or equal to any one of, at least any one of, or between any two of 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 60, 70, SO, 90, 100, ISO, 200, 250, 300, 350, 400, 450, 500, 550, 600, 700, and 800, and denotes number of repeat units: vi) R* can be -H or a C1 to C10 alkyl group, and can vary independently between -H and the C1 to C10 alkyl group in the repeating units - CHR ⁹ -; vii) the -(CHRI _S' - group can have a DB of 5 % or higher, such as 5 % to 50 %, or equal to any one of, at least any one of, or between any two of 0.01 , 0,1, 1 , 2, 3, 4, 5, 6, 1, 8, 9, 10, 12, 15, 20, 25, 30, 35, 40, 45 and 50 %; or any combinations thereof In some aspects, n6 can be 2 for each of Formula XII and CΪP. In some aspects, the HCHR ⁸ ) _(n s- group can have a DB of 0.01 to 3 %. In some aspects, R ^s can be -H or -Cft. In some aspects, R ^B can be -H or -CH2CH3, In some aspects, R ^s can be -H or a O alkyl group. In some aspects, R ⁸ can be -H or a Cvalkyl group. In some aspects, R* can be -H or a C ₅ alkyl group. In some aspects, R ⁸ can be -H or a Cc, alkyl group. In some aspects, R ⁸ can be -H or a C _? alkyl group. In some aspects, R ⁸ can be -H or a Cg alkyl group. In some aspects, R ⁸ can be -H or a CB alkyl group. In some aspects, R ⁸ can be -H or a C10 alkyl group. In some aspects, R ⁹ can be -H or -CH ₃ . In some aspects, R ⁹ can be -H or -CFfrCHi. In some aspects, R ⁹ can be -H or a Ci alkyl group, in some aspects, R ⁹ can be -H or a C ₄ alkyl group. In some aspects, R ⁹ can be -H or a €5 alkyl group. In some aspects, R ⁹ can be -H or a C _& alkyl group. In some aspects, R ⁹ can be -H or a C _? alkyl group. In some aspects, R ⁹ can be -H or a Cg alkyl group. In some aspects, R ⁹ can be -H ora C9 alkyl group. In some aspects, R ⁹ can be-H or a C10 alkyl group. In certain aspects, ni5 can vary randomly between the repeating units of Formula XII, and/or average of ni5s in the polymer can be 60 to 600, or equal to any one of, at least any one of, or between any two of 60, 70, 80, 90, 100, 150, 200, 250, 300, 350, 400, 450, 500, 550, and 600. to certain aspects, m5 does not vary between the repeating units of Formula XII. In certain aspects, DB of the - (CHR ^® ) _m5 - group can vary randomly between the repeating units of Formula XII, and/or the average DB of the -<CHR ⁸ ) _ffl 5- groups of the polymer can be 0.01 lo less than 5 %, or equal to any one of, at most any one of, or between any two of 0.01, 0.1 , 0.5. 1 , 2, 3, 4, or less than 5 %. In certain aspects, DB of the -(CHR ⁸ ) _ni 5- group between the repeating units of Formula X13 does not vary. In certain aspects, ra5’ can wry randomly between the repeating units of Formula XIII, and/or average of nmS’s in the polymer can be 5 to 800, or equal to any one of, at least any one of or between any two of 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 60, 70, 80, 90, 100, 150, 200, 250, 300, 350, 400, 450, 500, 550, 600, 700, and 800. In certain aspects, m5 does not vary between the repeating units of Formula XIII. In certain aspects, DB of the - (CHR ⁹ ) _m s— group can vary randomly between the repeating units of Formula XIII, and/or the average DB of the -(CHRI _S' - groups of the polymer can be 5 to 50 %, or equal to any one of, at least any one of, or between any two of 5, 6, 7, 8, 9, 10, 12, 15, 20, 25, 30, 35, 40, 45 and 50 %.

10023] In certain aspects, the Formula I can be Formula XIV, and the Formula II can be Formula XV or Formula XVI, and the copolymer can contain i) repeating units of Formula XIV, and ii) repeating units of Formula XV or Formula XVI, wherein in Formula XV, -CR ¹ *R ¹² - group and -CR ¹³ R ¹⁴ - are linear or branched hydrocarbons, p and 11 are independently an integer from 1 to 5, such as 1, 2, 3, 4 or 5; q, r, s, t are integers and can be independently chosen such that (q + r/2 + s)*2xt < 1000-p-u, and -Ph is a phenyl group. R" can be -H or a C1 to C10 alkyl group, and can vary independently between -H and the C1 to C10 alkyl group in the repeating units -CR ^{1 l} R ¹² - group. R ¹² can be -H or a C _t to C10 alkyl group, and can vary independently between -H and the C1 to C10 alkyl group in the repeating units ~GR ⁿ R ^,a ~ group. R ¹³ can be -H or a C1 lo C10 alkyl group, and can vary independently between -H and the Cj to C10 alkyl group tn the repeating units -CR ^,3 R ^U - group. R ¹⁴ can be -H or a C1 to CHI alkyl group, and can vary independently between -H and the C1 to C10 alkyl group in the repeating units -CR ¹³ R ¹⁴ - group. wherein in Formula XVI, -CR ^IS R ¹⁶ - group and -CR ¹⁷ R ^1S - are linear or branched hydrocarbons, p and v are independently an integer from 1 to 5, such as I, 2, 3, 4 or 5; q, r, s, t, u are integers and can be independently chosen such that (q + (r/2 + s)*u + t)x2 < lOOC-p-v, and -Ph is a phenyl group. R ¹⁵ can be -H or a C _\ to C10 alkyl group, and can vary independently between -H and the C1 to C10 alkyl group in the repeating units -CR^R ¹⁶ - group. R ¹⁶ can be -H or a C1 lo C10 alkyl group, and can vary independently between -H and the Ct to C10 alkyl group in the repeating units -€R ⁱ⁵ R ¹⁶ - group. R ¹⁷ can be -H or a C1 to C10 alkyl group, and can vary independently between -H and the C1 to C10 alkyl group in the repeating units - CR ¹⁷ R ^,8 ~ group. R ¹⁸ can be -H or a C1 to C10 alkyl group, and can vary independently between -H and ihe C1 to Cio alkyl group in the repeating units -CR ^t7 R ¹⁸ - group; wherein i) n7 can independently be an integer from 0 to 15, such as 1, 2, 3, 4, 5, 6, 7. 8, 9, 10,

11, 12, 13, 14 or 15, for each of Formula XIV, XV and XVI, and denotes number of repeat units; it) m6 can be an integer from 60 to 600, or equal to any one of, at least any one of, or between any two of 60, 70, 80, 90, 100, 150, 200, 250, 300, 350, 400, 450, 500, 550, and 601), and denotes number of repeal units; ill) R ¹⁰ can be -H or a C1 to C10 alkyl group, and can vary independently between H and the C1 to C10 alkyl group in the repeating units -CHR ¹ "-; and/or iv) the -(CHR ¹⁰ ) _nif r- group can have a DR of 0.01 to 50 %, or equal to any one of, at least any one of or between any two of 0.01, 0.1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 15, 20, 25, 30, 35, 40, 45 and 50 %. In some aspects, n? can be 2 for each of Formula XIV, XV and XVI. In some aspects, R ¹⁰ can be -H or-CH-i. In some aspects, R ¹⁰ can be -H or -CH2CH3. In some aspects, R'° can be -H or a C ₃ alkyl group. In some aspects, R ¹¹ ’ can be -H or a C ₄ alkyl group. In some aspects, R ¹⁰ can be-H or a C§ alkyl group. In some aspects, R ¹⁰ can be -H or a C ₆ alkyl group. In some aspects, R ¹⁰ can be -H or a Ci alkyl group. In some aspects, l ¹⁰ can be -H or a Cg alkyl group. In some aspects, R ¹⁰ can be -H or a C< _? alkyl group. In some aspects, R ¹⁰ can be - H or a C10 alkyl group. In certain aspects. m6 can vary randomly between the repeating units of Formula XIV, and/or average of ni6s in the polymer can be 60 to 600, or equal to any one of, at least any one of, or between any two of 60, 70, 80, 90, 100, 150, 200, 250, 300, 350, 400, 450, 500, 550, and 600. In certain aspects, 1116 does not vary between the repeating units of Formula XIV. In certain aspects, DB of the. -(CHR ¹⁰ ) _m(; - group can vary randomly between the repeating units of formula XIV, and/or the average DB of the -(CHR ^I(i ) _m6 - groups of the polymer can be 0.01 to 50 %, or equal to any one of, at least any one of, or between any two of f), 0.0 J, 0.1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 15, 20, 25, 30, 35, 40, 45 and 50 %, In certain aspects, DB of the -(CHR ¹⁰ ) _m6 - group between the repeating units of Formula XIV does not vary.

10024] Certain aspects are directed to a method for forming a copolymer described herein.

The method can include reacting i) a first a,w-dicarboxylic acid compound having a formula of HOOOZ-COOH or a ester thereof, and it) a second a,w-dicarboxylic acid compound having a formula of HOOC-Z’-COOH or a ester thereof, with a a,w-dihydroxy compound having a formula of Formula XL

[00251 X' can be an aliphatic group, X’ can contain up to 1000 carbon atoms. In some aspects, X’ can be a linear hydrocarbon, In some aspects, X’ can be a branched hydrocarbon. In some aspects, X’ can be a polyolefin group. A polyolefin group of X’ can be a polyolefin with one H missing at each of the two ends of the polyolefin backbone chain, where the valency of the terminal carbons are satisfied by bonding with the “-0” groups at the two sides of X’. in some aspects, X’ can be a linear polyolefin group, in some aspects, X’ can be a branched polyolefin group having a DB of 0.01 to 50 %, In some aspects, X’ can contain C1 to C10 hydrocarbon branches. In some aspects, X’ can be a polyethylene, polyethylene-propylene), polyfct-olefin), poJy(a-olefm-co-ethylene), or palyiethylene-co-a-olefin) group. In certain aspects, X’ can be a pely(ethyleiie~cr> l -butene), polyieibylene-co-l-bexene), or poly(elhylene-co-l-octene) group. In some aspects, X’ can be a polypropylene group, or a polybutylene group, or a pPlyfpropylene-co-ethylene) group. In son* aspects, X’ can be an atactic, isotactic, or syndiotactic polypropylene group. In some aspects, X’ can be random poly(propylene-co-etbylene) group. In certain aspects _* X’ can contain 45 to 1000 carbon atoms. In certain aspects, X’ can be a C1 to C*» aliphatic group. In some particular aspects, X’ can be a C1 to C20 aliphatic group. In some aspects, X’ can be a linear or branched, and substituted or unsubstituted hydrocarbon. In some aspects, X’ can have the formula of (1), (6), (7), (8), or (9); nl ii2’, m3 ⁵ , n4\ n5\ n6\ n7\ ®A\ n9\ nlOf nl G, nl2y and n!3\ are independently an integer from t to 5, and denote number of repeat units. Formula (I) is defined above, wherein n’ in formula ( 1) is an integer from 1 to 1000, and denotes number of repeat units, and wherein pi and p2 in formula (9) are independently 0, 1 , 2, 3, 4 or 5, and denote number of repeal units. In certain aspects, n’ is an integer from 1 to 15,

100261 In some aspects, the a,w-dihydroxy compound (e.g.. of Formula XI) can be ethylene glycol, 1,3-propanediol, 1 ,4-butanediol, 1,6-hexanediol, 1, 2-cyc lohexanediol, 2-butene-l,4- diol, glycerol, trimethalolmethane, trimethalolethane, trunethalolpropane, 3-hydroxymethyl- 1,5-pentanediol, pentaerythritol, or any combinations thereof. In some aspects, the ester of the first a,w-dicarboxylic acid compound and/or second a,w-dicarboxyHc acid compound can independently be a methyl, ethyl and/or propyl ester.

{00271 In some aspects, the first a,w-dicarboxylic add compound can be oxalic add, malonic acid, succinic acid, maleic add, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, or any combinations thereof. In some aspects, the second a,w- dicarboxylic acid compound can be citric acid, aconitic acid, isocitric acid, propane- 1,2,3- tricarboxyllc acid, pentane- 1 ,3, 5 -tricarboxylic acid, or any combinations thereof. In some aspects, the diacid can have 45 to 100 carbon atoms (e.g., 45, 50, 55, 60, 65, 70, 75, 85, 90, 95, 100 or any value or range there between) and a diol with less than 6 carbon atoms (e.g. 1, 2, 3, 4, 5, 6 or any value or range there between). A non-limiting example of a diol is ethylene glycol.

[0028] In some aspects, a) HO2C-Z-CO2H and/or ester thereof, and b) HCbC-Z’-CCfeH and/or ester thereof, can be reacted with HO-X’-OH (e.g., of Formula XI) at i) a temperature of 90 to 250 °C, and/or ii) under inert atmosphere and/or vacuum.

[0029] In some aspects, the a,w-dihydroxy compounds of Formula XI can be reacted with HO2C-Z-CO2H and/or ester thereof and b) HOaC-Z’-COaH and/or ester thereof, in presence of a triacid, tetraacid, and/or polyacid (poly > 4) to form branches in the copolymer. The mol. ratio of i) of HO2C-Z-CO2H and HOaC-Z’-COaH and ii) triacid, tetraacid and/or polyacid, in the reaction mixture can be 9: 1 to 100: 1.

[0030] In some aspects, the method can include reacting the a) HO2C-Z-CO2H and/or ester thereof, and b) HOzC-Z’-CCbH and/or ester thereof with i) a first a,w-dihydroxy compound having the formula of Formula XI, and ii) a second a, co-dihydroxy compound having the formula of Formula XI, wherein X’ of the Formula XI of the first a,w-dihydroxy compound is different than the X’ of the Formula XI of the second a,w-dihydroxy compound. In some aspects, the X’ of the Formula XI of the first a, co-dihydroxy compound can be a linear hydrocarbon, and the X’ of the Formula XI of the second a,w-dihydroxy compound can contain one or more side functional groups. In some aspects, X’ of the Formula XI of the first a,w- dihydroxy compound has the formula of formula (1), and X’ the Formula XI of the second a,w-dihydroxy compound has the formula of formula (6), (7), (8), or (9). In some aspects, the first a,w-dihydroxy compound can be ethylene glycol, 1,3-propanediol, 1,4-butanediol, 1,6- hexanediol, 1,2-cyclohexanediol, 2-butene- 1,4-diol, or any combinations thereof. In some aspects, the second a,w-dihydroxy compound can be glycerol, trimethalolmethane, trimethalolelhane, trimethalolpropane, 3-hydroxymethyl- 1,5-pentanediol, pentaerythritol, or any combinations thereof. In some aspects, the a) HO2C-Z-CQ2H and/or ester thereof, and b) HOaC-Z’-COaH and/or ester thereof can be reacted with i) a first a,w-dihydroxy compound, and ii) a second a,w-dihydroxy compound at i) a temperature of 90 to 250 °C, and/or ii) under inert atmosphere and/or vacuum.

10031J Certain aspects are directed to a method for recycling a copolymer described herein. In some aspects, the recycling method can include depolymerization of the copolymer. In some aspects, the copolymer can be contacted water and/or an alcohol under conditions suitable to depolymerize the copolymer to produce i) a first a, co-carboxylic acid compound having a formula of HOGC-Z-CGOH and/or an ester thereof ii) a second a,w- carboxylic acid compound having a formula of HOOC-Z’-COOH and/or an ester thereof and lit) a compound of Formula XI. The polymer can get depolymerized through hydrolysis (e.g. with water) and/or alcoholysis (e.g. with alcohol). In certain aspects, the polymer can be depolymerized by contacting the polymer with methanol. In certain aspects, the depolymerization conditions can include a temperature of 100 °C to 250 °C and/or a pressure of lO barg to 60 barg.

[00321 In some aspects, the copolymer can be depolymerized to obtain a first a, co- carboxylic acid compound having a formula of HOOC-Z-COOH and/or an ester thereof ii) a second a,w- carboxylic acid compound having a formula of HOOC-Z’-COOH and/or an ester thereof Mi) a first a,w-dihydfoxy compound having the formula of Formula XI, and ii) a second a,w-dihydroxy compound having the formula of Formula XI. The first a,w-dihydroxy compound and ii) the second a,w-dihydroxy compound can be as described above.

[0033] In certain aspects, the first and second recycled a,w-carboxylic acid compounds obtained (e.g., through depolymerization) can be repolymerized to form a copolymer described herein. In certain aspects, the first and second recycled a,w-carboxylic acid compounds obtained (e.g., through depolymerization) can be repolymerized with a compound of Formula XL o,w-dihydroxy compounds formed from depolymerization can be same or different that a,w-dihydroxy compounds used for repolymerization.

[0034] Certain aspects are directed to a composition containing a copolymer described herein. In some aspects, the composition can further contain one or more additional components in addition to the copolymer. In some aspects, the composition can be comprised in or in the form of a foam, a fiber, a powder, a film, a layer, or a sheet. Certain aspects are directed to an article of manufacture containing a copolymer described herein and/or a composition containing the copolymer. The composition and/or article of manufacture can be molded, such as extruded, injection molded, blow molded, compression molded, rotational molded, thermo formed and/or 3-D printed article,

[0035] Other embodiments of the invention are discussed throughout this application. Any embodiment discussed with respect to one aspect of the- invention applies to other aspects of the invention as well and vice versa. Each embodiment described herein is understood to be embodiments of the invention that are applicable to other aspects of the invention. It is contemplated that any embodiment discussed herein can be implemented with respect to any method or composition of the invention, and vice versa. Furthermore, compositions the invention can be used to achieve methods ofthe invention,

]003$] The following includes definitions of various terms and phrases used throughout this specification.

10037] The term “degree of branching (DB)" of a grottp/oJigomer/polymer refers to % of branched carbons in the backbone of the group/oligomer/polymer. For example, the following group having the formula of Formula (16), has a degree of branching 25 %. The branched carbons in the backbone of the group of Formula 16 is marked with a * R’ in formula 16 is a brandling group, can be an alkyl group, and r is an integer and denotes number of repeat units. 10038] The term “linear hydrocarbon” refers to a hydrocarbon having a continuous carbon chain without side chain brandling. The continuous carbon chain may be optionally substituted. The optional substitution can include replacement of at least one hydrogen atom with a Functional group, such as hydroxyl, acid, amine, or halogen group; and/or replacement of at least one carbon atom with a heteroalom. [0039] The term “branched hydrocarbon” refers to a hydrocarbon having a linear carbon chain containing branches, such as substituted and/or unsubstituted hydrocatbyl branches, bonded to the linear carbon chain. Optionally, the linear carbon chain can contain additional substitution. Optional additional substitutions can include replacement of at least one carbon atom in the linear carbon chain with a heteroatom and/or replacement of at least one hydrogen atom directly bonded to a carbon atom of the linear chain with a functional group, such hydroxyl, acid, amine, or halogen group,

[0040] The terms “about” or “approximately” are defined as being close to as understood by one of ordinary skill in the art. In one non-limiting embodiment, the terms are defined to be within 10%, preferably within 5%, more preferably within 1%, and most preferably within 0.5%.

[00411 The terms "wt.%,” “vol.%,” or “mol.%” refers to a weight percentage of a component, a volume percentage of a component, or molar percentage of a component, respectively, based on the total weight, the total volume of material, or total moles, that includes the component. In a non -limiting example, 10 grams of component in 100 grams of the material is 10 wt.% of component.

[0042] The term “substantially” and its variations are defined to include ranges within 10 %, within 5 %, within 1 %, or within 0.5 %.

[0043] The terms “inhibiting” or “reducing” or “preventing” or “avoiding” or any variation of these terms, when used in the claims and/or the specification includes any measurable decrease or complete inhibition to achieve a desired result.

[0044] The term “effective,” as that term is used in the specification and/or claims, means adequate to accomplish a desired, expected, or intended result.

[0045] The use of the words “a” or “an” when used in conjunction with any of the terms

“comprising,” “including,” “containing,” or “having” in the claims, or the specification, may mean “one,” but it is also consistent with the meaning of “one or more ” “at least one ” and “one or more than one.”

[0046J The phrase “and/or” means and or or. To illustrate, A, B, and/or C includes: A alone, B alone, C alone, a combination of A and B, a combination of A and C, a combination of B and C, or a combination of A, B, and C. In other words, “and/or” operates as an inclusive or.

[0047] The words “comprising” (and any form of comprising, such as “comprise” and “comprises”), “having” (and any form of having, such as “have” and “has”), “including” (and any torn of including, such as “includes” and “include”) or “containing” (and any form of containing, such as “contains” and “contain”) are inclusive or open-ended and do not exclude additional, unrecited elements or method steps.

[0048] The polymer the present invention can “comprise ” “consist(s) essentially of,” or “consist of’ particular groups, compositions, etc. disclosed throughout the specification, in one aspect of the present invention, and with reference to the. transitional phrase “consist(s) essentially of’ or “consisting essentially of,” a basic and novel characteristic of the present invention can include the copolymer containing repeating units of Formula I and repeating units of Formula II and/or can be chemically recycled to its building blocks or monomeric units in a relatively efficient manner (e.g,, contacted with aqueous and/or alcohol solutions).

(I049J All publications mentioned herein are incorporated hereto by reference, to disclose and describe the methods and/or materials in connection with which the publications are cited.

[00501 Other objects, features and advantages of the present invention will become apparent From the following detailed description and examples. It should be understood, however, that the detailed description and examples, while indicating specific embodiments of the invention, are given by way of illustration only and are not meant; to be limiting. Additionally, it is contemplated that changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description. In further embodiments, features from specific embodiments may be combined with features from other embodiments. For example, features from one embodiment may be combined with features from any of the other embodiments. In further embodiments, additional features may be added to the specific embodiments described herein.

10051] In the context of the present invention, at least the following 23 aspects are described. Aspect 1 is directed to a copolymer comprising repeating units of Formula L and repeating units of Formula II, wherein,

X is an aliphatic group for each of Formula I and II;

Z is a first polyolefin group comprising at least 45 carbon atoms, preferably 45 to 1 ,000 carbon atoms, and has a degree of saturation 98 to 100 %; and Z' is a an aliphatic group, wherein, the straetijre of Z is different than Z’.

[0052J Aspect 2 is directed to the copolymer of aspect 1 , wherein Z and Z’ independently has a degree oG branching (DB) of 0 to 50 %, [00531 Aspect 3 is directed to the copolymer of any one of aspects 1 to 2, wherein Z and/or

Z’ independently comprises branches having independently 1 to 10 carbons,

[0054] Aspect 4 is directed to the copolymer of any one of aspects I to 3, wherein Z has a DB of 0 to less than 5 % and Z' has a DB of 5 to 50 ¾,

[0055] Aspect 5 is directed to the copolymer of any one of aspects 1 to 4, wherein Z and/or Z" are independently polyethylene, polypropylene, poly(ethylene-co-propylene), poly(etliyiene-C€i-I -butene), poly(ethylene-co- 1 -hexene), or poly(ethylene-co- 1 -octene) group.

[0056] Aspect 6 is directed to the copolymer of any one of aspects I to 5, wherein Z and/or Z' are independently an atactic, isotactic, or syndiotaciic polypropylene.

[0057[ Aspect 7 is directed to the copolymer of any one of aspects 1 to 6, wherein X for each of Formula 1 and II is independently , or any combination thereof. wherein n’ is an integer from 1 to 15, and ni b n2\ u3\ n4\ n5’, n6\ n7\ n8\ n9\ nlOf ttl 1 \ nl2’, and ill 3’, are independently an integer from 1 to 10. [0058] Aspect 8 is directed to the copolymer of aspect 1, comprising repeating units of

Formula III, and repeating units of Formula IV, Formula IV, wherein «2 is independently an integer from 0 lo 15, and preferably front 1 to 15, for each of

Formulas III and IV. and denotes number of repeat units, ml is m integer front 45 lo 1000, and denotes number of repeat units, ml’ is an integer from 45 to 1000, and denotes number of repeat units, R ^l is «H or -CH2CH3, and varies independently between -B and -CH2CH3 in the repeating units -CHR ¹ -, and the -{CHROrni— group has a DB of 5 to 50 %. [0059] Aspect 9 is directed to the copolymer of aspect I, comprising repeating units of

Formula V, and repeating units of Formula VI,

Formula VI, wherein n3 independently is an integer from 0 to 15, and preferably from 1 to 15, for each of Fonroiias V and ¥1, and denotes number of repeat units, m2 is an integer from 60 to 600, and denotes number of repeat units, and q’ is an integer from 100 to 225, and denotes number of repeat units,

10060 J Aspect 10 is directed to the copolymer of aspect 1, comprising repeating units of Formula ¥11, and repeating units of Formula VIII, , wherein n4 is independently an integer from 0 to 15, and preferably from I to 15, for each of Formulas VII and VIII, and denotes number of repeat units,

R ² is _" H or -CH ₂ CH ₃ , and varies independently between -H and -CH2CH3 in the repeating units -CHR ² - , the -(OHR ² )^- group has a DB of 0.01 to 50 %, m3 is an integer from 60 to 600, and denotes number of repeat units, and m3’ is an integer from l to 497, and denotes number of repeat mils.

100611 Aspect 11 is directed to the copolymer of aspect 1, comprising repeating units of Formula IX, and repeating units of Formula X, wherein nS is independently an integer from 0 to 15, and preferably from 1 to 15, for each Formulas IX and X, and denotes number of repeat units,

R ³ is -H or -CH2CH3, and varies independently between -H and -CH2CH3 in the repeating units -CHR ³ - , the -(CHR ³ )*-»- group has a DB of 0.01 to 50 %, m4 is an integer from 60 to 600, and denotes number of repeat units, m4’ is an integer from 1 to 332, and denotes number of repeat units, and R ⁴ is a C2 to €10 alkyl group,

[00621 Aspect 12 is directed to the copolymer of aspect I , comprising repeating units of Formula XIV, and repeating units of Formula XV or XVI, wherein o7 is an integer from 0 to 15, and preferably from 1 to 15, for each of Formula XIV, XV and XVI, and denotes number of repeat units, ni6 is an integer from 60 to 600, and denotes number of repeat units, R ¹⁰ is -H or a Cj to C ₎₀ alkyl group, and can vary independently between H and tie Cj to C10 alkyl group in the repeating units -CHR ¹⁰ -, the -iCHR ⁱ⁽ V- group has a DB of 0.01 to 50 %,

R ¹¹ is -H or a C1 to C10 alkyl group, and can vary independently between -H and the C1 to C10 alkyl group in the repeating units -CR ¹ 'R ¹² - group. R ¹² can be -H or a C1 to C10 alkyl group, and can vary independently between -H and the C1 to C10 alkyl group in the repeating units -CR ⁿ R ¹² - group,

R ¹³ can be -H or a C1 to C10 alkyl group, and can vary independently between -H and the C ₁ to C10 alkyl group in the repeating units -CR ^,3 R ¹⁴ - group. R ¹⁴ can be -H or a C1 to C10 alkyl group, and can vary independently between -H and the Ci to C10 alkyl group In the repeating units -CR ^,3 R ^M - group,

R ¹⁵ can be -H or a C1 to C10 alkyl group, and can vary independently between -H and the Cj to C10 alkyl group in the repeating units -CR ^,5 R ^W ~~ group,

R ¹⁶ can be -H or a C1 to C10 alkyl group, and can vary independently between -H and the Ci to C10 alkyl group in the repeating units -CR ¹⁵ R ¹⁶ - group,

R ¹⁷ can be -H or a C1 to C10 alkyl group, and can vary independently between -H and the Cj to CM alkyl group in the repeating units -CR ^,7 R ^IS - group,

R ¹⁸ can be -H or a C1 to C10 alkyl group, and can vary independently between -H and the Ci to C10 alkyl group in the repeating units -CR ^I7 R ^!S - group, for Formula XV, p and ti are independently an integer from 1 to 5; q, r, s, t are independently integers, wherein (q + r/2 + s)*2xt £ 1000-p-u, and for Formula XVI, p and v are independently an integer from 1 to 5; q, r, s, t, u are independently integers, wherein (q + (r/2 + s)xu + t)x2 < 1000-p-v.

(00631 Aspect 13 is directed to the copolymer of any one of aspects 1 to 12, wherein the copolymer is a statistical copolymer.

(00641 Aspect 14 is directed to a method for forming the copolymer of any one of aspects 1 to 13, the method comprising: reacting i) a first a,ίb-diearboxylic acid compound having a formula of HOOC-Z-COOH and/or an ester thereof and ii) a second a,w-dicarboxylic acid compound having a formula of HOOC- Z ^’ -COOH and/or an ester thereof, with a a,w-dihydroxy compound having the chemical formula of Formula XI wherein X’ is an aliphatic group,

(00651 Aspect 15 is directed to the method of aspect 14, wherein X’ is wherein if is an integer from 1 to 15, and nl \ H2\ n3\ n4’, n5\ n6\ n7% n8\ Q9’ _» nlOf ill 1 nl2’, and al3\ are independently an integer from 1 to 10.

10066] Aspect 16 is directed to the method of aspect 14, wherein the a,w-dihydroxy compound is ethylene glycol, 1, 3-propanediol, 1 ,4-butanedioI, 1, 6-lie, xanediol 1,2- cyclohexanediol, 2-butepe- 1 ,4-diol, glycerol, trimelhalolmelhane, trimethalolethane, trimelhalolpropane, 3-hydroxymethyl- 1 ,5-pentanedioi, pentaeiythrilol, or any combinations thereof.

11067] Aspect 17 is directed to !he method of any one of aspects 14 to 16, whereto the ester of the acid of HQOC-Z-COOH, and HGOC-Z’-CGOH, is independently a methyl, ethyl and/or propyl ester. [0068 j Aspect 18 is directed to the method of any one of aspects 14 to 17, wherein the reaction conditions include i) a temperature of 90 to 250 °C, and/or ii) inert atmosphere and/or vacuum,

[0069] Aspect 19 is directed to a method for recycling a copolymer of any one of claims 1 to 13, the method comprising contacting the polymer with water and/or an alcohol under conditions suitable to depolymerize the polymer through hydrolysis and/or alcoholysis to produce i) a first a,w-dicarboxylic acid compound having a formula of HOOC-Z-COOH and/or an ester thereof, ii) a second a,w-dicarboxylic acid compound having a formula of HOOC-Z’- COGH and/or an ester thereof, and iii) a a,w-dihydroxy compound having the chemical formula of Formula XI wherein X’ is an aliphatic group. [007®! Aspect 20 is directed to the method of aspect 19, wherein W is wherein n’ is an integer from 1 to 15, andnl ^’ , n2', n3 ^* ,n4’,n5’,n6’,a7’, n8f n9\ nlO\ nlJf ni2f and nl 3’. are independently an integer from 1 to 10.

[0071 J Aspect 21 is directed to a composition comprising a copolymer of any one of aspects I to 13. [0072] Aspect 22 is directed to the composition of aspect 21, wherein the composition is comprised in an article of manufacture.

[0073] Aspect 23 is directed to the composition of aspect 22, wherein the article is an injection molded, blow molded, compression molded, rotational molded, thermofonned and/or 3-D printed article.

BRIEF DESCRIPTION OF THE DRAWINGS

[00741 Advantages of the present invention may become apparent to those skilled in the art with the benefit of the following detailed description and upon reference to the accompanying drawings.

[00751 FIG. 1 shows the ^l H-NMR spectra of a,w-dihydroxy polyethylene.

{00761 FIG. 2 shows the Differential scanning calorimetry (DSC) data of a,w-dihydroxy polyethylene.

{00771 FIG· ³ shows the thermal gravimetric analysis (TGA) of a,w-dihydroxy polyethylene in nitrogen atmosphere.

[0078] While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings. The drawings may not be to scale.

DETAILED DESC laiaifi m OF THE INVENTION

[0079] A discovery has been made that may provide a solution to at least some of the problems associated with polyolefin polymers. In one aspect, the discovery can include providing a copolymer containing at least one block containing 0.01 to 40 ester groups per 1000 backbone carbons atoms, and having a degree of saturation higher than 97 %. The copolymers of the current invention can have polyolefin like properties and can readily be recycled to the monomers of the polymers.

[00801 These and other non-limiting aspects of the present invention are discussed in further detail in the following sections.

A, Copolymer

[0081] The copolymer can repeating units of Formula I, and repeating units of Formula II: wherein n can independently be 0 or 1 in each of Formulas I and II, and denotes number of repeat units. In some aspects, the copolymer can contain additions units. [0062] Z can be a polyolefin group. In certain aspects, Z can vary randomly between the repeating units of Formula I, such as number of carbon atoms and/or DB of the Z groups in the polymer can vary randomly. In certain aspects, Z does not vary between the repeating units of Fonntila 1. In some aspects, Z can contain at least 45 carbon atoms. In some aspects, the polyolefin group of Z can contain 45 to 1,000, or equal to any one of, at least any one of, or between any two of 45, 50, 55, 60, 65, 70, 80, 90, 100, 150, 200, 220, 240, 260, 280, 300, 320, 340, 360, 380, 400, 420, 440,460, 480, 500, 520, 540, 560, 580, 600, 650, 700, 750, 800, 850, 900, 950, and 1,000 carbon atoms; preferably 40 to 800 carbon atoms, more preferably 60 to 600 carbon atoms, most preferably 100 to 700 carbon, atoms connecting the two oxygen atoms. In some aspects, average number of carbon atoms in the Z groups of the polymer can be 45 to 1000 or equal to any one of, at least any one of, or between any two of 45, 50, 55, 60, 65, 70,

80, 90, 100, 150, 200, 220, 240, 260, 280, 300, 320, 340, 360, 380, 400, 420, 440, 460, 480,500, 520, 540, 560, 580, 600, 650, 700, 750, 800, 850, 900, 950, and 1,000; preferably 40 to 800 carbon atoms, more preferably 60 to 600 carbon atoms, most preferably 100 to 700 carbon atoms connecting the two oxygen atoms. In some aspects, Z can have a degree of saturation 97 to 100 %, or equal to any one of, at most any one of, or between any two 97, 97.5, 98, 98.5, 99, 99.5 and 100%. In some aspects, Z can be a linear polyolefin group. In some aspects, Z can be a linear polyolefin groups having the formula of Formula (10) where m can be an integer from 45 to 1 ,000 or equal to any one of, at least any one of, or between any two of 45, 50, 55, 60, 65, 70, 80, 90, 100, 150, 200, 220, 240, 260, 280, 300, 320, 340, 360, 380, 400, 420, 440, 46Ό, 480, 500, 520, 540, 560, 580, 600, 650, 700, 750, 800, 850, 900, 950, and 1,000, preferably 100 to 700 connecting the two oxygen atoms, and denotes number of repeat units. In some aspects, in can vary randomly between the repeating units of Formula 10, and/or average of m in the polymer, can be 45 to 1,000, or equal to any one of, at least any one of or between any two of 45, 50, 55, 60, 65, 70, 80, 90, 100, 150, 200, 220, 240, 260, 280, 300, 320, 340, 360, 380, 400, 420, 440, 460, 480, 500, 520, 540, 560, 580, 600, 650, 700, 750, 800, 850, 900, 950, and 1,000. In some aspects, m does not vary between the repeating mills of Formula 10.

[00831 In some aspects, 2 can be a branched polyolefin having a DB of 0,01 to 50 %, or equal to any one of at most any one of or between any two 0.01, 0, 1, 0.5, 1, 2, 3, 4, 4.5, 5, 6, 7, 8, 9, 10, 15, 20, 25, 30, 35, 40, 45 and 50 %. In some aspects, Z can contain C1 to C10 branches (e.g. on the hydrocarbon backbone). In some aspects, Z can contain C _t to C10 alkyl group branches. In some aspects, the Z groups in the polymer can have an average DB of 0.01 to 10 %, or equal to any one of at most any one of, or between any two 0.01 , 0.1 , 0,5, 1 , 2, 3, 4, 4.5, 5, 6, 7, 8, 9, 10, 15, 20, 25, 30, 35, 40, 45 and 50 %.

[0084] In some aspects, Z can be a branched polyolefin group having the formula of

Formula (11) where, in’ can be am integer from 45 to 1000, and R can be -H or a C1 to C10 alkyl group, and varies independently between H and the C1 to C10 alkyl group in the repeating units -CHR-, wherein the -(CHR) _m — group has a DB of 0.01 to 50 %, or equal to any one of, at most any one of, or between any two of 0.01, 0.1, L 2, 3, 4, 4.5, 5, 6, 7, 8, 9, 10, 15, 20, 25, 30, 35, 40, 45 and 50 %. In some aspects, in’ can be equal to any one of, at least any one of or between any two of 45, 50, 55, 60, 65, 70, 80, 90, 100, 150, 200, 220, 240, 260, 280, 300, 320, 340, 360, 380, 400, 420, 440, 460, 480, 500, 520, 540, 560, 580, 600,650, 700, 750, 800, 850, 900, 950, and 1000. For example, Formula (1 la) is a non-limiting example of a polyolefin group with the formula (11), where R is -H or -CH2CH3, and R varies independently between -H and the -CH ₂ CH ₃ 111 foe repeating units -CHR-, [0085] In some aspects, R can be ~H or -CHb. In some aspects, R can be -H or -CH2CH3. In some aspects, R can be -H or a C3 alkyl group. In some aspects, R can be -H or a C4 alkyl group. In some aspects, R can be -H or a Cs alkyl group. In some aspects, R can be -H or a C$ alkyl group. In some aspects, R can be -H or a C _? alkyl group. In some aspects, R can be -H or a Cg alkyl group. In some aspects, R can be -H or a Cg alkyl group. In some aspects, R can be -H or a C10 alkyl group. In some aspects, m’ can vary randomly between the repealing units of Formula 11, and/or average of in’s in the polymer can be, 45 to 1,000, or equal to any one of, at least any one of, or between any two of 45, 50, 55, 60, 65, 70, 80, 90, 100, 150, 200, 220, 240, 260, 280, 300, 320, 340, 360, 380, 400, 420, 440, 460, 480, 500, 520, 540, 560, 580, 600, 650, 700, 750, 800, 850, 900, 950, and 1,000. In some aspects, m’ does not vary between the repeating units of Formula 11. In some aspects, DB of the ~(CHR) _m — groups can vary randomly between the repeating units of Formula 11, and/or average DB of the -fCHR) _» — groups in the polymer can be 0.01 to 50 %, or equal to any one of, at most any one of, or between any two of 0.01, 0.1, 1, 2, 3, 4, 4.5, 5, 6, 7, 8, 9, 10, 15, 20, 25, 30, 35, 40, 45 and 50 %. In some aspects, DB of the -(CHR) _»* - group does not vary between the repeating units of Formula 11.

[0086] In some aspects, the polyolefin group of Z can be a polyethylene, polypropylene, poly/ethylene-eo-propylene), or poly(ethylene-eo-a-olefin) group. In some aspects, a-olefm of the polyCethylene-co-a-olefin) group of Z can independently be a propylene, 1 -butene, 4- methyl-l-pentene, 1 -hexene, styrene, vinylcyclohexane, 1 -octane, norbomene, 5-vinyl-2- norbomene, 5-ethylidene-2-norbomene or 1-decene, In some aspects, Z can be a poly(ethylene- co-a-olefin) group containing less than 5 mol. % of a-olefm. In some aspects, Z can be a poIy(ethyIene-co~a-olefin) group containing 5 mol, %, or more than 5 mol. % of a-olefm.

[0087] The structure of Z can be different; than Z\ Z’ can be an aliphatic group. In some aspects, Z’ can have a degree of saturation 97 to 100 %, or equal to any one of, at most any one of, or between any two 97, 97.5, 98, 98.5, 99, 99.5 and 100 %. In some aspects, Z’ can contain 1 to 1,000 carbon atoms, or equal to any one of, at least any one of, or between any two of 1, 2, 3, 4, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 80, 90, 100, 150, 200, 220, 240, 260, 280, 300, 320, 340, 360, 380, 400, 420, 440, 460, 480, 500, 520, 540, 560, 580, 600, 650, 700, 750, 800, 850, 900, 950, and 1,000 carbon atoms, preferably 100 to 700 carbon atoms connecting the two oxygen atoms. In some aspects, Z’ can have a degree of branching (DB) 0 to 50 % or equal to any one of, at least any one of, or between any two of 0, 0.01, 0.1, 1, 3, 4.5, 5, 7, 10, 15, 20, 25, 30, 35, 40, 45 and 50 %. In some aspects, Z ⁵ can be a linear hydrocarbon. In some aspects, Z’ can be a branched hydrocarbon. In some aspects, Z’ can be a polyolefin group. In some aspects, Z ^? can be a linear polyolefin group. In some aspects, Z’ can be a branched polyolefin group, having a DR of 0.01 to 50 %. In some aspects, the branched polyolefin group of Z’ can contain C1 to C10 hydrocarbon branches. In some aspects, the branched polyolefin group of Z’ can contain C1 to C10 alkyl group branches. In some aspects, the polyolefin group of Z’ can be a polyethylene, polypropylene, polyf ethyl ene-eo-propy!ene), or poly(ethylene-co-a-olefin) group. In some aspects, a-olefin of the poly(ethylene-co-a- olefin) group of Z’ can independently be a propylene, 1 -butene, 4-methyl- 1-pentene, 1 -hexene, styrene, vinylcyclohexane, I-octene, norboniene, 5-vinyl-2-noiboraene, 5-ethylidene-2- norbomene or I-decene. In some aspects, T can be a poly(ethylene-co-a-olefin) group containing less than 5 mol.% of a-olefin. In some aspects, T can be a poly(ethylene-co-a- olefin) group containing 5 mol.%, or more than 5 mol.% of a-olefin. In some aspects, Z’ can be a linear polyethylene group. In some aspects, T can be a branched polyethylene group containing C1 to C10 alkyl group branches, and a DB of 0.01 to 50 %, such as 5 to 50 %. In some aspects, Z’ can be an atactic, isotactic, or syndiotactic polypropylene group. In some aspects, Z ⁵ can optionally contain one or more functional side groups. In some aspects, the one or more functional side groups can be one or more hydroxyl, acid, amine, or halogen groups. In some aspects, the fimctionaI groups can contain hydrocarbon groups linking the functional group to the hydrocarbon backbone ofZ’.

[0088| In some aspects, Z and Z’ can be poIy(etliyleiie-eo-l -butene) groups where the mol.% of 1-butene in Z and Z’ are different. In some aspects, Z and T can be polyfethylene- co- 1 -octene) groups where mol.% of 1-octene in Z and Z’ are different. In some aspects, Z can be a linear or branched polyethylene group, and Z’ can be a poly(ethylene-col -butene) group. In some aspects, Z can be a linear or branched polyethylene group, and Z ⁵ can be a poly(ethylene-co- 1-octene) group. In some aspects, Z can be a poly(ethylene-co-a-olefm) group, and Z’ can be a polypropylene group.

{0089] la some aspects, Z’ can be a polyether group. The polyether group can contain 3 to 1,000 atoms, or equal to any one of, at least any one of, or between any two of 3, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 80, 90, 100, 150, 200, 220, 240, 260, 280, 300, 320, 340, 360, 380, 400, 420, 440, 460, 480, 500, 520, 540, 560, 580, 600, 650, 700, 750, 800, 850, 900, 950, and 1,000 atoms (e.g. carbon and oxygen atoms in total) in the polymer backbone. The polyether can be a linear or a branched polyether. The branched polyetber can contain C1 to C10 hydrocarbon branches. In some aspects, the branched polyether can contain C1 to C10 alkyl group branches.

(0090J In certain aspects, the polyether can have the formula of formula (12) wherein m5 ¹ is an integer from 1 to 332, and denotes number of repeat units. in5’ can be 1 , 2, 3, 4, 5, 6, 7, 8, 9, 10, 15, 20, 25, 3(1, 40, 50, 60, 70, 80, 90, 100, 120, 140, 160, 180, 200, 220, 240, 260, 280, 300, 320, 330, 331, or 332 or any range or integer therein. In some aspects, m5’ can vary randomly between the repeating units of Formula 12, and/or average of ni5’s in the polymer can be, 1, 2, 3, 4, 5,6, 7, 8, 9, 10, 15, 20, 25, 30, 40, 50, 60, 70, 80, 90, 100, 120, 140, 160, 180, 200, 220, 240, 260, 280, 300, 320, 330, 331, or 332 or any range or integer therein. .

In some aspects, m5’ does not vary in the repeating units of Formula 12.

(0091 ] In certain aspects, the polyether can have the formula of formula ( 13). wherein mff is an integer from l to 332, and denotes number of repeat units, R ⁴ can be C1 to C10 hydrocarbon, mb’ can be 1 , 2, 3, 4, 5, 6, 7, 8, 9, 10, 15, 20, 25, 30, 40, 50, 60, 70, 80, 90, 100, 120, 140, 160, 180, 200, 220, 240, 260, 280, 300, 320, 330, 331, or 332 or any range or integer therein. In some aspects, the R ⁴ can be -CH3. In some aspects, R ⁴ can be -CH ₂ CH ₃ . In some aspects, R ⁴ can be a C ₃ alkyl. In some aspects, R ⁴ can be a C ₄ alkyl, in some aspects, R ⁴ can be a Cs alkyl In some aspects, R ⁴ can be a C _e alkyl, !u some aspects, R ⁴ can be a Or alkyl In some aspects, R ⁴ can be a Cg alkyl. In some aspects, R ⁴ can be a C _? alkyl. In some aspects, R ⁴ can be a C10 alkyl. In some aspects, 1116’ can vary randomly between the repeating units of Formula 13, and/or average of m6’s in the polymer can be, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 15, 20, 25, 30, 40, 50, 60, 70, 80, 90, 100, 120, 140, 160, 180, 200, 220, 240, 260, 280, 300, 320, 330, 331 , or 332 or any range or integer therein. In some aspects, mif does not vary in the repeating units of Formula 13.

[00921 In some aspects, Z’ can be a polydiniethylsiloxane group. The polydimetliylsiloxane group can contain 3 to 1000 atoms, or equal to any one of, at least any 5 one of, or between any two of 3, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 80, 90, 100, 150, 200, 220, 240, 260, 280, 300, 320, 340, 360, 380, 400, 420, 440, 460, 480, 500, 520, 540, 560, 580, 600, 650, 700, 750, 800, 850, 900, 950, and 1 ,000 atoms (e.g. silicon and oxygen atoms in total) in the polymer backbone. In some aspects, the polydimethylsiloxane group can have a formula of formula (14) 0 where mT is an integer from 1 to 497, or equal to any one of, at least any one of, or an integer number of repeat units. In some aspects, in?’ can vary randomly between the repeating units 5 of Formula 14, and/or average of m7’s in the polymer can be, 1 to 497, or equal to any one of, at least any one of, or an integer between any two of 3, 5, 10, IS, 20, 25, 30, 35, 40, 45, 50,

440, 460, 480, and 497. In some aspects, tii7’ does not vary in the repeating units of Formula 14. 0 11093] In son* aspects, Z’ can be a polystyrene, polybutadiene or styrene-butadiene copolymer group. In some aspects, Z’ can contain at least 45 carbon atoms, and can have a degree of saturation of the main chain of 60 to 100 %, such as 75 to 100 ¾. In some aspects, T can contain 45 to 1 ,000 carbon atoms, or equal to any one of, at least any one of, or between any two of 45, 50, 55. 60, 65, 70, 80, 90, 100, 150, 200, 220, 240, 260, 280, 300, 320, 340,5 360, 380, 400, 420, 440, 460, 480, 500, 520, 540, 560, 580, 600, 650, 700, 750, 800, 850, 900,

950, and 1 ,000 carbon atoms. In some aspects, the polyolefin group of Z’ can be a polystyrene, polybutadiene, random poly(styrene-co-butadiene) or polyfstyrene-b/ocA-poIybutadiene) diblock copolymer or poly(styrene-fttoct-polybiitadiene-btoc*A-slyrene) triblock copolymer group. 10094) In some aspects, T is a saturated aliphatic group,

(0095) X in each of Formula I and Formula II can independently be an aliphatic group. X in each of Formula I and Formula II can independently contain up to 1000 carbon atoms or equal to any one of, at least any one of, or between any two of 1, 3, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 80, 90, 100, 150, 200, 220, 240, 260, 280, 300, 320, 340, 360, 380, 400, 420, 440, 460, 480, 500, 520, 540, 560, 580, 600, 650, 700, 750, 800, 850, 900, 950, and 1,000 carbon atoms. In certain aspects, X in each of Formula I and Formula II can independently contain 45 to 1000 carbon atoms. In certain aspects, X in each of Formula I and Formula II can independently be a C1 to C ₄₄ aliphatic group. In some particular aspects, X in each of Formula I and Formula II can independently be an aliphatic group containing t, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, or 20 carbons. In some aspects, X can be a linear or a branched hydrocarbon. In some aspects, X in each of Formula I and Formula II can independently be a branched hydrocarbon having a DB of 0.01 to 50 %, or equal to any one of, at least any one of, or between any two of 0.01, 0.1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 15, 20, 25, 30, 35, 40, 45 and 50 %. In some aspects, X in each of Formula I and Formula II can independently be a polyolefin group. In some aspects, X in each of Formula I and Formula II can independently be a linear polyolefin group. In some aspects, X in each of Formula I and Formula II can independently be a branched polyolefin group. In some aspects, X in each of Formula I and Formula II can independently contain C _t to C ₁₀ hydrocarbon branches. In some aspects, X in each of Formula I and Formula II can independently be a polyethylene, poly(ethylene-propylene), poly(a-olefm), poly(a-olefm-co-ethylene), or poly(ethylene-co-a- oleftn) group. In certain aspects, X in each of Formula I and Formula II can independently be a poly(ethyiene«col -butene), poly(ethylene-co-l-hexene), or poly(ethylene-co-I-octene) group. In some aspects, X in each of Formula I and Formula II can independently be a polypropylene group, or a polybutylene group, or a poly(propylene-co-ethylene) group. In some aspects, X in each of Formula I and Formula II can independently be an atactic, isotactic, or syndiotactic polypropylene group. In some aspects, X in each of Formula I and Formula II can independently be random polyipropylene-co-ethylene) group. In some aspects, the one or more side functional groups of X in each of Formula I and Formula II can independently be one or more of oxy, hydroxyl, acid, amine, or halogen groups. In some aspects, the functional groups can contain hydrocarbon groups linking the functional group to the backbone of X. In certain aspects, X can vary randomly between the repeating units of Formula I In certain aspects, i) number of carbon atoms in the X groups can vary randomly between the repeating units of Formula I or Hi) the DB of the X groups can vary randomly between the repeating units of Formula I. In certain aspects, X does not vary between the repeating units of Formula I. in certain aspects, X can vary randomly between the repeating units of Formula II. In certain aspects, i) number of carbon atoms in the X groups can vary randomly between the repeating units of Formula II or ill) the DB of the X groups can vary randomly between the repealing units of Formula II. In certain aspects, X does not vary between the repeating units of Formula II, to some aspects, average of number of carbon atoms in the X groups of toe copolymer can be 1 to 1000 or equal to any one of, at least any one of, or between any two of 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 25, 30, 35, 40, 44, 45, 50, 55, 60, 65, 70, 80, 90, 100, 150, 200, 220, 240, 260, 280, 300, 320, 340, 360, 380, 400, 420, 440, 460, 480, 500, 520, 540, 560, 580, 600, 650, 700, 750, 800, 850, 900, 950, and 1,000. In some aspects, the X groups in the copolymer can have an average DB of 0,01 to 50 %, or equal lo any one of, at most any one of, or between any two 0,0 J, 0.1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 15, 20, 25, 30, 35, 40, 45, and 50 %.

{00961 In some aspects, X can have the formula of Formula (1), and the copolymer can contain repeating units of Formula lb, and repeating units of Formula Ob,

Formula lib wherein n’ independently can be 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 or 15, for each of Formula lb and fib, and denotes number of repeat units.

{0097] In some aspects, X can have the formula of Formula (2), and the copolymer can contain repeating units of Formula Tc, and repeating units of Formula Tic,

wherein the respective units are bonded through bonding between “a” and “b” ends, and ill ’ and n2’ are independently 1 ,

2, 3, 4, or 5.

[0098] In some aspects, X can have the formula of Formula (3), and the copolymer can contain repeating units of Formula Id, and repeating units of Formula ltd,

Formula Hcl wherein the respective units are bonded tliroiigh bonding between “a” and “b” ends, and t»3’, n4’ and n5’ are independently 1, 2, 3, 4, or 5. [00991 in some aspects, X can have the formula of Formula (4), and the copolymer can contain repeating units of Formula Ie, and repeating units of Formula lie. wherein the respective units are bonded through bonding between "a” and “b” ends, and n6’, n7\ iiiP and ii:9’ are independently 1, 2, 3, 4, or 5. 1001001 In some aspects, X can have the formula of Formula (5), and foe copolymer can contain repeating units of Formula If, and repeating units of Formula Ilf wherein the respective units are bonded through bonding between “a” and “b” ends, , and nl0\ nl G, til 2’, and til 3’ are independently L 2, 3, 4, or 5,

Formula (1) - (5) are described above. [00101] In certain aspects, the copolymer can contain i) repeating units of a first unit having the formula of Formula I, and ii) repeating units of a second unit having the formula of Formula I, wherein X of the first unit can have a different formula than the·: X of the second unit. In certain aspects, X of foe first unit can be a linear hydrocarbon, and the X of foe second unit can contain one or more side functional groups. In some aspects, X of the first unit has the chemical formula of Formula ( 1), and X of the second unit has the chemical formula of Formula (2), (3), (4) or (5). The Z of the first unit and the second unit can be same or different, e. g. can have same Or different chemical formula. In some aspects, Z of foe first unit and foe second unit can have the same formula. In certain aspects, the ratio of mol.% of the first unit and second unit in the copolymer can be 9: 1 to 999: 1, or equal to any one of, at least any one of, or between any two of 9; I, 10:1, 15:1, 20:1, 25:1, 30:1, 35:1, 40:1, 45:1, 50:1, 55:1, 60:1, 65:1, 70:1, 75:1, 80: 1 , 85: 1 , 90: l , 95 : 1 , 100: 1 , 200: 1 , 300: 1 , 400: 1, 500:1, 600: 1 , 700: 1 , 800: 1 , 900: 1 , and 999: 1. In certain aspects, the first unit can have formula of formula lb, and the second unit CM have formula of Formula Ic, Id, le, and/or If.

[001021 In certain aspects, the copolymer can contain i) repeating units of a third unit having the formula of Formula !l, and ti) repeating units of a fourth unit having the formula of formula II, wherein X of the third unit can have a different formula than the X of the fourth unit. In certain aspects, X of the third unit can be a linear hydrocarbon, and the X of the fourth unit can contain one or more side functional groups. In some aspects, X of the third unit has the chemical formula ofFormula (1), and X of the fourth unit has the chemical formula of Formula (2), (3), (4) or (5). The Z ³ of the third unit and the fourth unit can be same or different, e. g. can have same or different chemical formula. In some aspects, Z’ of the third unit and the fourth unit can have the same formula. In certain aspects, the ratio of mol.% of the third unit and fourth unit in the copolymer can be 9: 1 to 999: 1 , or equal to any one of, at least any one of, or between any two of 9:1, 10:1, 15:1 , 20:1, 25:1, 30:1, 35:1, 40:1, 45:1, 50:1, 55:1, 60: 1, 65:1, 70:1, 75:1, 80:1, 85: 1, 90: 1 , 95: 1, 100:1 , 200: 1 , 300: 1 , 400:1, 500: 1 , 600: 1 , 700: 1, 800: 1, 900: 1 , and 999: L In certain aspects, the third unit can have formula of Formula lib, and the fourth unit can have formula of Formula lie, lid, He, and/or Ilf.

[00103) In some aspects, T _m of the polymer can be 40 °C to 180 °C, or equal to any one of, at least any one of, or between any two of 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 86, 88, 90, 92, 94, 96, 98, 100, 102, 104, 106, 108, 110, 112, 114, 116, 118, 120, 122, 124, 126, 128, 130, 132, 134, 136, 138, 140, 142, 144, 146, 148, 150, 152, 154, 156, 158, 160, 162, 164, 166, 168, 170, 175 and 180 °C. In some aspects, the number average molecular weight (14) of the copolymer can be 10,000 to 1,000,000 g/raol, or equal to any one of, at least any one of, or between any two of 10,000, 20,000, 40,000, 50,000, 60,000, 70,000, 80,000, 90,000, 100,000, 1 10,000, 120,000, 130,000, 140,000, 150,000, 160,000, 170,000, 180,000, 190,000, 200,000, 250,000, 300,000, 350,000, 400,000, 450,000, 500,000, 550,000, 600,000, 650,000, 700,000, 800,000, 900,000 and 1,000,000 g/mol, as determined as the polyethylene equivalent molecular weight by high temperature size exclusion chromatography performed at 160 °C in trichlorobenzene using polyethylene standards. In some aspects, the copolymer can have a polydispersity index (PDI), of 1.5 - 4.0, preferably 1.8 to 3.0, or equal to any one of, at least any one of, or between any two of 1, U, 1.2, 1.3, 1.4, 1.5, 1.6, 1.8, 2, 2,2, 2.4, 2.6, 2.8, 3, 3.2, 3.4, 3.6, 3.8, and 4. In some aspects, the copolymer can be a statistical copolymer. In some aspects, the block copolymer can contain at least one amorphous block, and at least one semi-crystalline block. In some aspects, the block copolymer can contain at least two amorphous blocks, wherein the glass transition temperature (? ^’ _g ) of the two blocks can be different.

{00104] In some aspects, the Z and Z’ groups in the copolymer can such that melt temperatures (71,,) of a polymer, such as a homopolymer, formed by the Z groups of the copolymer, and a polymer, such as a homopolymer, formed by the Z’ groups of the copolymer, can differ by at least 40 °C, or by 40 °C to 180 °C, such as 85 °C to 170 °C, such as 90 °C to 150 °C, or equal to any one of, at least any one of, or between any two of 40 °C, 50 °C, 60 °C, 70 °C, 80 °C, 90 °C, 100 °C, 110 °C, 120 °C, 130 °C, 140 °C, 150 °C, 160 °C, 170 °C, and 180 °C.In some aspects, the melt temperatures (T _m ) of a polymer such as a homopolymer, formed by the Z groups of the copolymer can be greater than can be equal to or greater than 40 °C. ?’,n can be measured by differential scanning calorimetry performed at a heating rate of 10 °C per minute and wherein the melting temperature corresponds to the melting peak in the second run. In some aspects, the Z and T groups in the copolymer can such that glass transition temperature (¾) of a polymer, such as a homopolymer, formed by the Z groups of the copolymer, and a polymer, such as a homopolymer, formed by the Z ^* groups of the copolymer, can differ by at least 5 °€, such as by at least 10 ^a C, such as by at least 20 °C, such as by at least 30 °C, such as by at least 40 °C, such as by at least 50 °C, such as by at least 100 °C, such as at least by 140 °C, or by 10 °C to 140 °C, or equal to any one of, at least any one of, or between any two of 10 °C, 20 °C, 30 °C, 40 °C, 50 °C, 60 °C, 70 °C, 80 °C, 90 °C, 100 °C, 110 °C, 120 °C, 130 °C, 140 °C, 150 °C, 160 °C, 170 °C, and 180 °C.In some aspects, the Z and Z’ groups in the copolymer can such that crystallinity at room temperature of a polymer, such as a homopolymer, formed by the Z groups of the copolymer, and a polymer, such as a homopolymer, formed by the Z’ groups of the copolymer, can differ by at least 5 %, such as by at least 10 %, such as by at least 20%, such as by at least 30 %, such as by at least 40 %, such as by at least 50 %. In certain aspects, a polymer, such as a homopolymer, formed by the Z groups of the copolymer, and the polymer, such as a homopolymer, formed by the Z’ groups of the copolymer can be crystalline at room temperature. In certain aspects, a polymer, such as a homopolymer, formed by the Z groups of the copolymer, and a polymer, such as a homopolymer, formed by the Z’ groups of the copolymer can be amorphous at room temperature. In certain aspects, a polymer, such as a homopolymer, formed by the Z groups of the copolymer can be amorphous, and the polymer, such as a homopolymer, formed by the T groups of the copolymer can be crystalline at room temperature. In certain aspects, a polymer, such as a homopolymer, formed by the Z groups of the copolymer can be crystalline, and a polymer, such as a homopolymer, formed by the Z’ groups of the copolymer can be amorphous at room temperature. Crystallinity can be measured by X-ray powder diffraction (XRD).

Method of Forming the Polymer

[00105] Certain aspects are directed to a method for forming a copolymer described herein. The method can include reacting i) a first a,w-dicarboxylic acid compound having a formula of HOOC-Z-COOH and/or an ester thereof, and ii) a second a,co-dicarboxylic acid compound having a formula of HOGC-Z’-COOH and/or ester thereof, with a a,w-dihydroxy compound having a formula of Formula XI,

Z and Z’ are as described above.

[00106] X’ can be an aliphatic group. X’ can and/or on average contain up to 1000 carbon atoms, or equal to any one of, at most any one of, or between any two of 1, 10, 15, 20, 30, 40, 45, 50, 55, 60, 65, 70, 80, 90, 100, 150, 200, 220, 240, 260, 280, 300, 320, 340, 360, 380, 400, 420, 440, 460, 480, 500, 520, 540, 560, 580, 600, 650, 700, 750, 800, 850, 900, 950, and 1,000 carbon atoms. In certain aspects, X’ can contain 45 to 1000 carbon atoms. In certain aspects, X can be a C1 to Cu aliphatic group. In some particular aspects, X’ can be an aliphatic group containing 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, or 20 carbons. In some aspects, X’ can be a linear or a branched hydrocarbon. In some aspects, X ^* can be a branched hydrocarbon. In some aspects, X’ can be a polyolefin group. In some aspects, X’ can be a linear polyolefin group. In some aspects, X’ can be a branched polyolefin group having a DB of, and/or an average DB of 0.01 to 50 %, or equal to any one of, at least any one of, or between any two of 0.01, 0.1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 15, 20, 25, 30, 35, 40, 45 and 50 %. In some aspects, X can contain C1 to C10 hydrocarbon branches. In some aspects, X’ can be a polyethylene, poly(ethylene-propylene), poly(ot-olefin), poly(ct-olefin-co-ethylene), or poly(ethylene-C0-a-olefm) group. In certain aspects, X can be a poly(ethylene-co-l-butene), poly(ethylene-a> I -hexene), or poly(ethylene-co-l-octene) group. In some aspects, X ^s can be a polypropylene group, or a polybutylene group, or a polytpropylene-cp-ethylene) group. In some aspects, X’ can be an atactic, isotactic, or syndiotactic polypropylene group. In someaspects, X’ can be random poly(propylene-co-e4hylene) group. In some aspects, X’ can contain one or more side functional groups. In some aspects, the one or more side functional groups can be one or more of oxy, hydroxyl, acid, amine, or halogen groups. In some aspects, the functional groups can contain hydrocarbon groups linking the functional group to the backbone of X’. In some aspects, X’ can have the formula of formula (1), (6), (7), (8), or (9) or any combination thereof. In some aspects, a combination of acids, with different X ’ can be used. In some aspects, acids with different X’ can be used, providing a polymer where X varies, such as carbon atoms and/or DB of X varies, randomly between the repeating units of Formula I, and between the repeating units of Formula II.

[00107} In some aspects, the a,w-dihydroxy compound can be ethylene glycol, 1,3- propanediol, 1,4-butanediol, 1 ,6-hexanediol, 1,2-cyclohexanediol, 2-butene- 1,4-diol, or any combinations thereof. In some aspects, the second a,w-dihydroxy compound can be glycerol, trimethalohnethane, trimethalolethane, trimethalolpropane, 3-hydroxymethyl- 1 ,5-pentaoediol, pentaerythritol, or any combinations thereof. In some aspects, the ester of HOOC-Z-COOH and HOOC-Z’-COOH can independently be methyl, ethyl, propyl and/or tertiary butyl ester. In some aspects, i) the HOOC-Z-COOH and/or ester thereof, and ii) HOOC-Z-COOH and/or ester thereof can be reacted with the HO-X’-OH at i) a temperature of 90 to 250 °C, or equal to any one of, at least any one of, or between any two of 90, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 210, 220, 230, 240, and 250 °C and/or ii) under inert atmosphere and/or vacuum. In some aspects, the reaction can include esterification at 90 to 250 °C, and/or under inert atmosphere, followed by polycondensation at 90 to 250 °C, and/or under vacuum, e.g. at pressure below 0.5 mbar, such as below 0.1 mbar, such as around 0.05 mbar. In some aspects, HOOC-Z-COOH can be reacted with HO-X’-OH at a mole ratio of 5:95 to 95:5, or equal to any one of, at least any one of, or between any two of, 5:95, 10:90, 15:85, 20:80, 25:75, 30:70, 35:65, 40:60, 45:55, 50:50, 55:45, 60, :40, 65:35, 70:30, 75:25, 80:20, 85:15, 90:10, and 95:05. In some aspects, HOOC-Z’-COOH can be reacted with HO-X’-OH at a mole ratio of 5:95 to 95:5, or equal to any one of, at least any one of, or between any two of, 5:95, 10:90, 15:85, 20:80, 25:75, 30:70, 35:65, 40:60, 45:55, 50:50, 55:45, 60:40, 65:35, 70:30, 75:25, 80:20, 85:15, 90:10, and 95:05. In some aspects, mole ratio of HOOC-Z-COOH and HOOC-Z’- COOH, during polymerization can be 5:95 to 95:5, or equal to any one of, at least any one of, or between any two of, 5:95, 10:90, 15:85, 20:80, 25:75, 30:70, 35:65, 40:60, 45:55, 50:5(1, 55:45, 60,:40, 65:35, 70:30, 75:25, 80:20, 85:15, 90:10, and 95:05.

[001081 In some aspects, the method can include reacting a) HOOC-Z-COOH and/or ester thereof, and b) HOOC-Z-COOH and/or ester thereof with i) a first a,w-dihydroxy compound having the formula of Formula XI (and/or an ester, and/or cyclic anhydride thereof), and ii) a second a,w-dihydroxy compound having the formula of Formula XI (and/or an ester, and/or cyclic anhydride thereof), wherein X’ of the Formula XI of the first a,w-dihydroxy compound is different than the X’ of the Formula XI of the second a,w-dibydroxy compound. In some aspects, the X’ of the Formula XI of the first a,w-dihydroxy compound can be a linear hydrocarbon, and the X’ of the Formula XI of the second a,w-dihydroxy compound can contain one or more side functional groups. In some aspects, X’ of the Formula XI of the first a, codihydroxy compound has the formula of formula (1), and X’ of the Formula XI of the second a, co-dihydroxy compound has the formula of formula (6), (7), (8), or (9). In some aspects, the first a,w-dihydroxy compound can be ethylene glycol, 1, 3-propanediol, 1,4-butanediol, 1,6- hexanediol, 1,2-cycIohexanediol, 2-butene- 1,4-diol, or any combinations thereof. In some aspects, the second a,w-dihydroxy compound can be glycerol, trimethalolmethane, trimethalolethane, trimethalolpropane, 3-hydroxymethyl- 1,5-pentanedioI, pentaerythritol, or any combinations thereof. In some aspects, BGOC-Z-COGH and/or ester thereof, and HOOC- Z-COOH and/or ester thereof with the first a,w-dihydroxy compound, and the second a,w- dihydroxy compound at i) a temperature of 90 to 250 °C, or equal to any one of, at least any one of, or between any two of 90, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 210, 220, 230, 240, and 250 °C and/or ii) under inert atmosphere and/or vacuum. In some aspects, the reaction can include esterification at 90 to 250 °C, and/or under inert atmosphere, followed by polycondensation at 90 to 250 °C, and/or under vacuum, e.g. at pressure below 0.5 rnbarg, such as below 0.1 rnbarg, such as around 0.05 mbarg. In some aspects, HOOC-Z-COOH (and/or ester thereof) can be reacted with the first a,w-dihydroxy compound, at a mole ratio of 5:95 to 95:5, or equal to any one of at least any one of, or between any two of, 5:95, 10:90, 15:85, 20:80, 25:75, 30:70, 35:65, 40:60, 45:55, 50:50, 55:45, 60,;40, 65:35 , 70:30, 75:25, 80:20, 85:15, 90:10, and 95:05. In some aspects, HOOC-Z’-COOH (and/or ester thereod) can be reacted with the first a,w-dibydroxy compound, at a mole ratio of 5:95 to 95:5, or equal to any one of, at least any one of, or between any two of, 5:95, 10:90, 15:85, 20:80, 25:75, 30:70, 35:65, 40:60, 45:55, 50:50, 55:45, 60:40, 65:35, 70:30, 75:25, 80:20, 85:15, 90: 10, and 95:05. In some aspects, mole ratio of HOOC-Z-COOH and HOOC-Z’-COOH, during polymerization can be 5:95 to 95:5, or equal to any one of, at least any one of, or between any two of, 5:95, 10:90, 15:85, 20:80, 25:75, 30:70, 35:65, 40:60, 45:55, 50:50, 55:45, 60,;40, 65:35, 70:30, 75:25, 80:20, 85:15, 90:10, and 95:05. The first a,w-dihydroxy compound and the second a,w- dihydroxy compound can be reacted with the HOOC-Z-COOH (and/or ester thereof) and HOOC-Z’-COOH (and/or ester thereof) at a first acid: second acid mole ratio of 9:1 to 999:1, or equal to any one of at least any one of, or between any two of 9: 1, 10:1, 15:1, 20: 1, 25: 1, 30:1, 35:1, 40:1, 45:1, 50: 1, 55:1, 60:1, 65:1, 70:1, 75:1, 80:1, 85:1, 90:1, 95:1, 100:1, 200:1, 300:1, 400:1, 500:1, 600:1, 700:1, 800:1, 900:1, and 999:1. In certain aspects, the compounds HGGC-Z-C0OH (and/or ester thereof) and HOOC-Z’-COQH (and/or ester thereof) can be polymerized with more than two selected from ethylene glycol, 1,3-propanediot, 1,4- butanediol, 1,6-hexanediol, 1,2-cyclohexanedioI, 2-butene- 1,4-diol, glycerol, trimethalolmethane, trimethalolethane, trimethalolpropane, 3-hydroxymethyl- 1 ,5-pentanedioI, pentaerythritol, or any combinations thereof.

(001091 In some aspects, the a,w-dihydroxy compound having a formula of Formula XI can be reacted with the first a,w-dicarboxylic acid compound, and the second a,w-dicarboxylic acid compound, in presence of a triacid, tetraacid, and/or polyacid (poly > 4) and/or esters and/or anhydride thereof. The triacid, tetraacid, and/or polyacid (and/or esters and/or anhydride thereof) can react with the a,w-dihydroxy compound and form branches in tire copolymer. The mol. ratio of i) the first and second a,w-dicaiboxylic acid compound (and/or esters and/or anhydride thereof), and ii) triacid, tetraacid, and/or polyacid (and/or esters and/or anhydride thereof), in the reaction mixture can be 9: 1 to 100: 1 or equal to any one of, at least any one of, or between any two of 9: 1, 10:1, 15:1, 20:1, 25:1, 30:1, 35:1, 40:1, 45:1, 50:1, 55:1, 60:1, 65:1, 70:1, 75:1, 80:1, 85:1, 90:1, 95:1, and 100:1. In some aspects, the triacid, tetraacid, and/or polyacid can be citric acid, aconitic add, isocitric add, propane-I,2,3-tricarboxylic acid, pentane-1, 3, 5-tricarboxylic add, or any combinations thereof.

(00110) In certain aspects the reaction, (e.g., esterification and/or polycondensation) can be performed in presence of a catalyst. In some aspects, catalyst used can include but are not limited to a mineral acid, organic acid, organic base, metallic compound and/or enzymes. In some aspects, the metallic compounds can be a hydrocarbyl, oxide, chloride, carboxylate, alkoxide, aryloxide, amide, salen complex, b-ketiminato complex, or guanidinato complex, of a metal. In some aspects, the metal can be Li, Na, K, Mg, Ca, Sc, Y, lanthanides, Ti, Zr, Zn, Mo, ME, A!, Ga, Bi, Sb, or Sn. In some aspects, the catalyst can be Ti(OiPr)4, Ti(OBu>4, Al(OiPr>3, Sn(2-ethyl-hexanoate) ₂ , MoC¾, or any combinations thereof. In certain aspects, a combination of catalyst can be used.

(00111) A non-limiting general example is provided below.

Copolymer obtained from a linear and a branched diol with succinic acid [001121 The diacids (15) and (16) can be polymerized with ethylene glycol to form the copolymer, containing repeating units of (18) and (19).

] 00113) x, y, z are mole fractions. In aspects, x ranges from 1 to 1000, preferably front 1 to 1000, preferably front 20 to 500, and more preferably from 50 to 100, or any range in between, including mentioned endpoints. In aspects, y ranges from 1 to 1000, preferably from 1 to 1000, preferably from 20 to 500, and more preferably from 50 to 100, or any range in between, including mentioned endpoints. In aspects, 2 ranges from 1 to 100, preferably from 5 to 50, and preferably is 20, or any range in between, including mentioned endpoints. An ethyl group is shown as the branching group, but may be any of a C1 to Cfr moiety, and is preferably an saturated aliphatic group. The polymer { 17) can contain units 18 and 19 arranged randomly.

(00114J An aspect relates to a copolymer comprising repeating units of Formula I, and repeating units of Formula II,

Formula 1 Fonmi!a II wherein, X is an aliphatic group for each of Formula 1 and II;

Z is a first polyolefin group comprising at least 45 carbon atoms, preferably 45 to 1 ,000 carbon atoms, and has a degree of saturation 98 to 100 %; and

Z ^* is a an aliphatic group, wherein the structure of Z is different than Z\ and wherein Formula I or Formula II, or both, comprise 0.01 to 40 ester groups per 1 ,000 backbone carbon atoms.

C. Method of Recycling the Polymer

[00115] Certain aspects of the present invention are directed to a method of recycling a copolymer described herein. The recycling can include depolymerizing the copolymer. The copolymer can be depolymerized to obtain a first a,w-dicarboxylic acid compound having a formula of HOOC-Z-COQH and/or ester thereof, and a second a,w-dicarboxylic compound having a formula of HOOC-Z ^’ -COOH and/or ester thereof. In certain aspects, the depolymerization method can include hydrolysis and/or alcoholysis of the copolymer to obtain the compound of formula HGGC-Z-COOH (and/or ester thereof), HOOC-Z’-COOH (and/or ester thereof), and/or a compound of Formula XI. In certain aspects, the depolymerization method can include methanolysis of the copolymer under conditions suitable to obtain methyl esters of HOOC-Z-COQH and HOOC-Z’-COOH.

[00116] In certain aspects, the depolymerization of the copolymer can produce i) the compound HOOC-Z-COQH (and/or ester thereof), ii) the compound HOOC-Z’-COOH (and/or ester thereof), iii) a first a,w-dihydroxy compound having a formula of Formula XI, and iv) a second a,w-dihydroxy compound having the formula of Formula XI, wherein X’ of the Formula XI of the first a,w-dihydroxy compound is different than the X’ of the Formula XI of the second a,w-difaydroxy compound. In some aspects, the X’ of the Formula XI of the first a,w-dihydroxy compound can be a linear hydrocarbon, and the X ⁵ of the Formula XI of the second a,w-dihydroxy compound can contain one or more side functional groups. In some aspects, X’ of the Formula XI of the first a,w-dihydroxy compound has the formula of formula (1), and X’ of the second a,w-dihydroxy compound has the formula of formula (6), (7), (8), or (9). [00117] In some aspects, the first a,w-dihydroxy compound can be ethylene glycol, 1,3- propanediol, 1,4-butanediol, 1,6-hexanediol, 1,2-cycIohexanedioI, 2-butene- 1,4-diol, or any combinations thereof. In some aspects, the second a,w-dihydroxy compound can be glycerol, trimethalolmethane, trimethalolethane, trimethalolpropane, 3-hydroxyraetbyl- 1 ,5-pentanediol, 5 pentaerythritol, or any combinations thereof. In some aspects, the methane lysis conditions can include i) a temperature of 100 °C to 250 °C, or equal to any one of, at least any one of, or between any two of l 00, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 210, 220, 230, 240, and 250 °C and/or ii) a pressure of 10 barg to 60 barg, or equal to any one of, at least any one of, or between any two of 10, 15, 20, 25, 30, 35, 40, 45, 50, 55 and 60 barg. In some aspects, 10 the depolymerization can be performed at an inert atmosphere. Catalyst used for depolymerization, such as methanolysis can include a mineral acid, organic acid, organic base, and/or metallic compound. In some aspects, the metallic compounds can be a hydrocarbyl, oxide, chloride, carboxylate, alkoxide, aryloxide, amide, salen complex, b-ketiminato complex, or guanidinato complex, of a metal. In some aspects, the metal can be Li, Na, K, Mg, Ca„ Sc, 15 Y, lanthanides, Ti, Zr, Zn, Mo, M,n, Al, Ga, Bi, Sb, or Sn. In some aspects, the catalyst can be Ti(OiPr)4, Ti(OBu)4, Al{OiPr).i, Sn(2-ethyl-hexanoate) ₂ , M0O3, or any combinations thereof.

[00118] In certain aspects, the method of recycling can include repolymerization of the recycled HOOC-Z-COOH (and/or ester thereof) and/or HOOC-Z’-COOH (and/or ester thereof), e.g., obtained from the depolymerization process. The recycled HOOC-Z-COOH 20 (and/or ester thereof) and/or HOOC-Z’-COOH (and/or ester thereof), can be repolymerized to form a copolymer described herein, a,w-diliydroxy conipouod(s) formed during depolymerization, and a,w-dihydroxy compound(s) used for repolymerization can be same or different.

D. Compositions and Article of Manufacture Containing the Polymer

25 [00119J The copolymer described herein can be included in a composition. In some aspects, the composition can contain a blend of the copolymer and one or more other polymers. In some aspects, the one or more other polymers can be polyethylene, polypropylene, EPDM, polystyrene, polyethylene terephthalate, polybutylene terephthalate, p polyvinyl chloride, polyvinyl acetate, ethyl vinyl alcohol (EVOH), ethylene-vinyl acetate (EYA), polymethyl 30 methacrylates, polyacrylates, polycarbonates, polysulphonates, polyurethanes, polyamides, synthetic rubber, bitumen, mineral oils, or any combinations thereof. In some aspects, the composition can further include one or more additives. The one or more additives may include, but are not limited to, a scratch-resistance agent, an antioxidant, a flame retardant, an UV absorber, a photochemical stabilizer, a filler such as glass and/or mineral filler, an optical brightener, a surfactant, a processing aid, a mold release agent, a pigment, flow modifiers, foaming agents or any combinations thereof. In some aspects, the compositions can be comprised in or in the form of a foam, a film, a layer, a sheet, a molded article, a welded article, a filament, a fiber, a wire, a cable, or a powder. In one example, the composition is incorporated into a film. Specifically, the film may include at least one film layer that includes the composition. In further aspects the film includes at least a second film layer.

[00120] Certain aspects are directed to an article of manufacture containing a copolymer described herein and/or a composition containing the copolymer. The composition and/or article of manufacture can be molded, such as extruded, injection molded, blow molded, compression molded, rotational molded, thermoformed and/or 3-0 printed article. In some aspects, the article of manufacture can be a personal equipment part, an automobile part, plumbing material, construction material, a consumer electronics housing, a personal equipment part, a kitchen appliance, furniture, or a home appliance component.

EXAMPLES

[00121] The present invention will be described, in greater detail by way of specific examples. The following examples are offered for illustrative purposes only, and are not intended to limit the invention in any manner. Those of skill in the art will readily recognize a variety of noncritical parameters which can be changed or modified to yield essentially the same results.

100122] Example 1

[00123] Production of olefin block co-polymer mimics (OBC-raimics)

J00124] In this example, random olefin block copolymer are synthesized using a,w-di carboxy polyethylene (90 mol%) , a,w-dicarboxy hydrogenated polybutadiene-20% branching (10 mol%) and ethylene glycol.

[00125) Step I- esterification: 8.64 mmol a,w-diearboxy polyethylene, 0.96 mmol a,w- dicarboxy hydrogenated polybutadiene, 12,48 mmol succinic acid and 0.24 g titanium tetra- isopropoxide were introduced into the reactor and the reactor was then heated to 190 °€ while stirring and in the presence of a nitrogen atmosphere. The esterification was conducted for 2.5 hrs at atmospheric pressure. [00126] Step II- polycondensation ; After Step I polycondensation was started by taming off the nitrogen and gradually reducing the pressure down to approximately 0.05 mbar. The temperature was raised to 220 °C. The polycondensation reaction was conducted for 3.0 hrs. At the end of 3 hours, the vacuum was released by bleeding in the nitrogen and the resultant polymer was collected.

[00127] A general scheme for this process is shown below, wherein x is 120, y is 20, and 2 is 211: alphs _j omega dlcarboxy Ethylene glycol alpha omega dfeatboxy hydrogenated polyethylene potybutadiene (20% branching)

Step 1. Esterification, 190°C, 2.5 hrs cat. Titanium N2 atm tetraisopropoxide

Step 2. Polycondensation, 220°C, 3 hrs 0,05 mbar

Random olefin block copolymer

Scheme I

Example 2

[00128) In this example, random olefin block copolymer synthesis using a,w-dicarboxy polyethylene (40 mol%), a,w-dicarboxy hydrogenated polybutadiene - 20% branching (60 mol%) and ethylene glycol are reacted as follows;

[00129] Step I- esterification; 4,0 mmol a,w-dicarboxy polyethylene, 6.0 mmol a,w- dicarboxy hydrogenated polybutadiene 13 mmol ethylene glycol 0.16 g and titanium tetra- isopropoxide were introduced into the reactor and the reactor was then heated to 190 °C while stirring and in the presence of nitrogen atmosphere. The esterification reaction was conducted for 2.5 hrs at atmospheric pressure,

[00130] Step II- polycondensation: After Step I, a polycondensation reaction was initiated by turning off the nitrogen and by gradually reducing the pressure down to approximately 0.05 mbar. The temperature was raised to 220 °C and the polycondensalion reaction was conducted for 3.0 hrs. After 3 hours the vacuum was released by bleeding in the nitrogen and the polymer thus produced was collected. Scheme 2 below shows the synthesis pathway. In this example, m is 120, x = m, y is 20, and z is 211 : alpha, omega dicarboxy Ethylene glycol alpha omega dicarboxy hydrogenated polyethylene polybutadiane (20% branching)

Random olefin block copolymer

Scheme

Example 3

[00131 J The purpose of this example is to show that elastomeric block copolymers can be created by via polycondensation of a linear polyethylene diol, hydroxyl-terminated polydimethylsiloxane (HO-PDMS-OH).

Materials

The following materials were selected to make the

Synthesis of linear diol MW 3000 [0100] Synthesis of a,w-dihydroxy polyethylene is shown in Scheme 3,

[01011 step 1: cis-l,4-diacetoxy-2-butene (2.07 g, 61 12.0 mmol) was added to THF (135 mL) in a two-neck 500 mL Schlenk flask under argon purging. The flask was then transferred to a 35 °C oil bath, and cis-cyclooctene (30 g, 272.2 63 mmol) was added dropwise over 30 min. The addition of a second generation Grubbs catalyst (101.86 mg, 0.12 mmol) solution in THF (3 mL) was started after adding 1 mL cis cyclooctene. After 6 hours of reaction, the mixture was precipitated into acidic methanol (1.2 L with 35% HC1 (1.5 g) solution in water (13.5 g). The precipitated polymer, a,oί-diacetoxy terminated polycyclooctene was collected and dried under vacuum for two days.

[0102] Step, 2. To convert the eiid acetoxy groups in a,w-diacetoxy terminated polycycloocene into hydroxy groups, the polymer was dissolved in THF (137.5 mL) at 40 °C and 25 wt% NaOMe (2.97 g ₃ 55.0 mmol) solution in methanol was added. The solution was stirred for 20 hours and precipitated into methanol (2 72 L) with 35% HC1 (1.5 g) solution in water (13.5 g). The isolated a, co-dihydroxy polycyclooctene was dried tinder vacuum.

1 M 03] Step 3. Hydrogenation of a,w-dihy droxy polycyclooctene (HO-PCOE-OH)HO- PCOE-OH, (10 g, 90.7 mmol double bonds), p-toluenesulfonyl hydrazide (52.4 g, 281.3 mmol), iributylamine (75.6 mL, 317.6 mmol), butylated hydroxy toluene (50 mg, 0.22 mmol), and o-xylene (385.76 mL) were added to a 1000 tnL three-neck round-bottom flask. The mixture was heated to 140 °C and refluxed for 6 hours. After cooling to room temperature, the reaction mixture was poured into methanol. The obtained precipitate was washed with methanol (2 * 500 mL). The isolated white powder was dried under vacuum the extent of hydrogenation was detemiioed by 1 H-NMR and found to be > 99%. ^l H-NMR of (TCE-d2, > 99.5 atom % D, 120 °C): 5: 3.66 (t, CftrOH, a’); b); 1.61 - 1.24 (m, -CH ₂ -). DSC data of a,®- dihydroxy polyethylene showed a T _m and T _c of 129 °C, 117 °C respectively. TGA in M ₂ atmosphere was found to be 452 °C. f 0104J 1 n this experiment n i s at least I ,

Scheme 3

[001321 1 H-NMR spectra of a,w-dihydroxy polyethylene is shown in FIG, 1 { l H-NMR of (TCE-d2, > 99.5 atom % D, 120 °C); 5: 2.66 ft, CH2-OH, a’}; b); 1.61 - 1.24 (m, -CH2-) [00133| DSC data of a,w-dihydroxy polyethylene showed a Tin and Tc of 129 °C, 117 °C respectively, as is shown in FIG, 2,

[001341 TGA in nitrogen atmosphere was found to be 452 °C as shown in FIG. 3.

Example 4

[00135f ^Ste P I ^: Hydrogenation of unsaturated GH-PB-GH [00136] Hydrogenation procedure:

[00137] Hydrogenation of «,w-dihydroxy polycyclooctene (HO-PCOE-OH):

[001381 HO-PCOE-OH, (10 g, 90.7 m.mol double bonds), p-tolueoesulfonyl hydrazide (52,4 g, 281,3 mmol), tributylamine (75.6 mL, 317.6 mmol), butylated hydroxytoluene (50 mg, 0.22 mmol), and o-xylene (385.76 mL) were added to a 1000 mL three-neck round-bottom flask. The mixture was heated to 140 °C and refluxed for 6 hours. After cooling to room temperature, the reaction mixture was poured into methanol. The obtained precipitate was washed with methanol (2 ^c 500 mL). The isolated white powder was dried under vacuum the extent of hydrogenation was determined by ‘H-NMR and found to be > 99%. 'H-NMR of (TCE-d2, > 99.5 atom % I ⁾ . 120 °C): 5: 3.66 (t, CH ₂ -OH, a ^s ); b); 1.61 - 1.24 (m, -€¾-). DSC data of a,w-dihydroxy polyethylene showed a T _m and T _c of 129 °C, 117 °C respectively, TGA in N2 atmosphere was found to be 452 °C.

[001391 The procedure of Example 3 was followed to prepare the diol, and the hydrogenation procedure was used to hydrogenate diol (Mw-3000) to >99.5%.

{00140] In a 600 mL Parr vessel, 24 grams of the hydrogenated diol (Mw-3000) was transferred into a conical flask and 150 ml of cyclohexane was added. The contents of the conical flask were mixed thoroughly and then transferred into the Parr vessel. An additional 150 ml of cyclohexane was added into conical flask. The contents of the conical flask was mixed thoroughly and then transferred into the Parr vessel, and a check was made to ensure that no reactant is present in the conical flask. 2.4 grams of 3 wt.% Pd/CaCC¾ catalyst was directly added into the Parr vessel.

[00141] a, co-dihydroxy polydimethylsiloxane: - Commercially available from Gelest Inc. (USA)

[001421 Esterification and Condensation {00143] A random olefin block copolymer synthesis was performed using a,w-dihydroxy polyethylene (90 mol% ethylene) , a _s co-dihydroxy polydimethyl siloxane (10 mol% siloxane) and succinic acid (MW 118, Aldrich) is shown in Scheme V below.

{00144] a,w-dihydroxy polyethylene (8.64 mmol), a, co-dihydroxy po!ydimethyl siloxane (0.96 mmol), succinic acid (9.6 mmol), and titanium tetra-isopropoxide (1.34 wt %) were introduced into the reactor and the reactor was then heated to 190 °C under stirring and in the presence of a nitrogen atmosphere. The first stage, esterification was carried out for 2.5 hrs at atmospheric pressure. After that, a second stage, polycondensation was initiated by turning off the nitrogen and by gradually reducing the pressure down to -0.05 mbar and the temperature was raised to 220 °C. After polycondensation reaction for 3.0 hire, the vacuum was released by bleeding in the nitrogen and the polymer was collected. In this example, R ^l is ethyl, n is 10, p is 211, q 12, a= 1, x =90.

Scheme 5

Results and Discussion:

{00145J The linear PE diol has a Tg of -100°C, while the PDMS-diol has a Tg of - 127°C. Using the Flory-Fox model, for a polymer made with polycondensation of a mixed diol and succinic acid, wherein the mixed diol consists of 80%wt PE-diol and 20%wt PDMS-diol, the resultant Tg would be -112°C. In other words, assuming the Tm of the linear PE-diol to be 118C, addition of 20%wt. PDMS-diol increases the Tm-Tg difference from 218°C to 23G°€, which results in improved-low temperature impact.

[001461 Although embodiments of the present application and their advantages have been described in detail, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the embodiments as defined by the appended claims. Moreover, the scope of the present application is not intended to be limited to the particular embodiments of the process, machine, manufacture, composition of matter, means, methods and steps described in the specification. As one of ordinary skill in the art will readily appreciate from the above disclosure, processes, machines, manufacture, compositions of matter, means, methods, or steps, presently existing or later to be developed that perform substantially the same junction or achieve substantially the same result as the corresponding embodiments described herein can be utilized. Accordingly, the appended claims are intended to include within their scope such processes, machines, manufacture, compositions of matter, means, methods, or steps.