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WO/2011/101399 |
The invention relates to high-molecular-weight bimodal neodymium-catalyzed polybutadiene, having a high content of cis-1,4 units of >95% and a low content of 1,2-vinyl of <1%, wherein the polybutadiene comprises a linear polymeric main f...
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WO/2011/094094 |
The present invention provides for a composition that includes a hydrogenated styrenic block copolymer that has at least one block A and at least one block B, and about 10 to about 90 percent by weight of an styrene-isobutylene-styrene b...
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WO/2011/086580 |
Disclosed is an improved process for production of relatively gel free high cis-1,4-polybutadiene by polymerizing 1,3-butadiene monomer in presence of organocobalt-alkyl aluminum catalysts and a cycloalkane solvent system, the improvemen...
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WO/2011/085207 |
High structure carbon black-styrene butadiene compositions and methods for making such are provided herein. In addition, articles made from the high structure carbon black-styrene butadiene compositions are also provided. The method can ...
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WO/2011/075534 |
Methods and apparatus for the purification of isoprene, such as the purification of a bioisoprene composition from fermentor off-gas. The apparatus includes two columns that process the fermentor off-gas, which includes isoprene and vari...
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WO/2011/045393 |
The invention relates to a linear, neodymium-catalyzed polybutadiene of high molecular weight, having a high content of cis-1,4 units of >95% and a low content of 1,2-vinyl of <1% and a low molar mass distribution index (MDI), wherein th...
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WO/2011/010527 |
Disclosed is a composition for film formation which includes a polymerizable compound having a polymerizable functional group, wherein the polymerizable compound has, in the molecule, both a partial structure comprising a cage structure ...
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WO/2010/139449 |
The present invention relates to a novel catalytic system for polymerisation and, specifically, for preparing conjugated diene polymers with a polar function at the chain end. Said catalytic system is made up of a metal salt of a rare ea...
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WO/2009/132514 |
An isoprene or butadiene cis 1,4-selective polymeric catalyst system together with its polymerization process is provided. The catalyst system is composed of NCN-imine pincer-shaped rare earth metal complex of formula [2,6–(CH=N–R’...
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WO/2009/099717 |
Polymer powders comprising in copolymerized form a) one or more vinyl aromatic comonomers, b) one or more 1,3-diene comonomers, c) from 0.1 to 15 percent, based on the total comonomer weight, of one or more comonomers selected from the g...
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WO/2009/099717 |
Polymer powders comprising in copolymerized form a) one or more vinyl aromatic comonomers, b) one or more 1,3-diene comonomers, c) from 0.1 to 15 percent, based on the total comonomer weight, of one or more comonomers selected from the g...
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WO/2009/099717 |
Polymer powders comprising in copolymerized form a) one or more vinyl aromatic comonomers, b) one or more 1,3-diene comonomers, c) from 0.1 to 15 percent, based on the total comonomer weight, of one or more comonomers selected from the g...
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WO/2008/146643 |
A polybutadiene in which the values of e, f, and g calculated from the following determinant (I): (I) [wherein symbol a is a peak value at around 1,130 cm-1 in a transmittance spectrum obtained by Fourier transfer-infrared spectroscopy, ...
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WO/2008/100309 |
A composition includes a baleable polymer resulting from the polymerization of at least one conjugated diene in the presence of an anionic initiator. The baleable polymer has carboxylate termination resulting from the addition of carbon ...
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WO/2008/079937 |
A process for the preparation of a fluoroolefin polymer from an azeotropic mixture of monomers having a constant composition, the process including the step of: contacting in a reaction zone: (i) an initiator; and (ii) an azeotropic mixt...
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WO/2007/149897 |
A method of preparing a high impact polystyrene comprising contacting styrene monomer, a high cis polybutadiene elastomer, and an initiator under high shear within a reaction zone. A high-impact polystyrene comprising a high cis polybuta...
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WO/2007/115486 |
The industrial synthesis process of high trans-1,4-isoprene polymer is carried out by bulk precipitation polymerizition in the presence of TiCl4/MgCl2supported titanium catalyst.The process includes the steps: prepolymerizing in a prepol...
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WO/2007/079872 |
The present application relates to highly filled rubber mixtures based on hydrogenated vinylpolybutadienes, to their vulcanizates and to their use for production of a very wide variety of rubber mouldings.
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WO/2007/056262 |
The present invention provides a polymer composition capable of being cured or crosslinked in the absence of conventional sulfur and accelerator cure systems. The polymer is formed from olefinically unsaturated monomers and includes at l...
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WO/2007/056262 |
The present invention provides a polymer composition capable of being cured or crosslinked in the absence of conventional sulfur and accelerator cure systems. The polymer is formed from olefinically unsaturated monomers and includes at l...
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WO/2007/054228 |
The invention relates to sulfur-crosslinked hydrogenated vinyl polybutadienes which are used for producing technical rubber articles and tire components while being provided with a very good recovery behavior across a large temperature r...
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WO/2007/054228 |
The invention relates to sulfur-crosslinked hydrogenated vinyl polybutadienes which are used for producing technical rubber articles and tire components while being provided with a very good recovery behavior across a large temperature r...
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WO/2006/133757 |
The invention concerns a method for preparing a diene elastomer. The invention is applicable in particular for obtaining a polybutadiene with a high proportion of cis-1,4 sequences having both a Mooney viscosity (ML1+4) not less than 40,...
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WO/2006/081415 |
Natural rubber and/or synthetic polyisoprene film products having enhanced tear strength and tensile strength crosslinked with a one polynitrile oxide, intended for direct or indirect contact with living tissue or fluids to be placed in ...
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WO/2006/052035 |
A silica-containing rubber composition for tires which comprises: a rubber ingredient comprising (a) 20-80 wt.% vinyl-cis polybutadiene rubber containing 1,2-polybutadiene having a melting point of 170°C or higher and at least one polym...
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WO/2005/085306 |
A 3,4-isoprene polymer having high stereoregularity, in particular, high isotacticity. It is an isoprene polymer having structural units represented by the general formula (I) given in the claims, and is characterized in that the isotact...
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WO/2004/083263 |
A polymerisation catalyst comprising (1) a transition metal compound of Formula A, and optionally (2) an activating quantity of a Lewis acid activator, Formula (A), wherein Z is a five-membered heterocyclic group containing at least one ...
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WO/2004/074333 |
Metal complexes suitable for use in polymerization are described which correspond to Formula (1) in which M is yttrium, a group 4 metal, a lanthanide or an actinide metal; Ml is a group 1 or group 2 metal; T independently each occurrence...
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WO/2004/065339 |
The invention relates to a method whereby an initial FCC C5 fraction is used to obtain a final, purified, isoprene-enriched C5 fraction which can be used for the selective polymerisation of isoprene, and a method of obtaining a homopolym...
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WO/2004/046213 |
The invention concerns a method for obtaining a 1,3-butadiene homopolymer which consists in reacting a catalytic system in the presence of 1,3-butadiene and one or more mono-olefin(s) of 4 carbon atoms. The invention is characterized in ...
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WO/2004/035638 |
The invention relates to synthetic branched polyisoprenes having a macrostructure and a microstructure which are very similar to those of natural rubber. According to one aspect of the invention, said polyisoprenes have an apparent stres...
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WO/2004/003022 |
A catalyst composition for use in the polymerization of a conjugated diene, which comprises the following components: (A) a metallocene type complex of a rare earth metal compound, (B) an alminoxane and (C) a combination of two or more o...
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WO/2003/102041 |
The invention relates to a process improvement allowing the production of high cis1,4-polybutadiene which includes both very high and very low solution viscosity grades. The process comprises contacting a feed comprising 1,3-butadiene, b...
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WO/2003/097708 |
The invention concerns a catalytic system used for preparing polybutadienes by polymerization, a method for preparing said catalytic system and a method for preparing polybutadienes using said catalytic system. The inventive catalytic sy...
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WO/2003/095503 |
A catalyst for polymerization of a conjugated diene or the like, comprising a metallocene cation complex of gadolinium compound. For example, it is a catalyst consisting of a metallocene cation complex of trivalent gadolinium compound re...
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WO/2003/082932 |
A catalyst composition for the polymerization of conjugated dienes which comprises (A) a metallocene-type complex represented by the general formula (I): (C5R1R2R3R4R5)aMXb·Lc (wherein M is a rare earth metal; C5R1R2R3R4R5 is substitute...
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WO/2003/072617 |
A process for synthesizing syndiotactic 1,2-polybutaidene, the process comprising the steps of (1) polymerizing monomer consisting essentially of 1,3-butadeine monomer within an organic solvent that includes at least 50% by weight of ali...
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WO/2003/051942 |
The invention is a two-step procedure for the formulation of a mixed catalyst of a nickel compound preferably with diene addition, boron trifluoride and an organo-aluminum compound, for the synthesis of cis-1,4-polybutadiene rubber, in w...
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WO/2003/018649 |
Process for the preparation of branched polybutadiene with a high content of 1,4-cis units by the polymerization of 1,3-butadiene, carried out in the presence of one or more solvents and a catalytic system which comprises a Cobalt comple...
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WO/2003/004471 |
The instant invention relates to multifunctional alkoxyamines based on polyalkylpiperidines, polyalkylpiperazinones and polyalkylmorpholinones and their use as polymerization regulatros/initiators. Further subjects of the invention are a...
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WO/2002/100910 |
Provided is a composition that is the combination of or the reaction product of ingredients that include (a) a molybdenum-containing compound, (b) a silyl phosphonate, and (c) an organoaluminum compound. The composition can be used, for ...
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WO/2002/090396 |
A sys-1, 4-polybutadiene production method in which 1, 3-butadiene is polymerized by using a catalyst substantially composed of a transition metal compound, an organic aluminum compound, and active hydrogen under presence of a surfactant...
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WO/2002/072510 |
A humidification system (A) for humidifying a dry hydrocarbon stream includes a column (10) which defines an interior cavity (20). The cavity is partially filled with a bed (12) of a packing material (40) and a layer of water (20), leavi...
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WO/2002/068484 |
A continuous process for producing conjugated diene polymers comprising the steps of contacting, within an hydrocarbon solvent and within a continuous reactor, conjugated diene monomer and a catalyst composition prepared by combining: (a...
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WO/2002/066525 |
A catalyst composition that is the combination of or the reaction product of ingredients that include a chromium-containing compound, an organomagnesium compound, and a silyl phosphonate. The catalyst composition can be used in the forma...
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WO/2002/038635 |
The invention concerns synthetic polyisoprenes having a high cis-1,4 chaining rate and the method for preparing same. The inventive polyisoprenes have a cis-1,4 chaining rate, measured according to technique of nuclear magnetic resonance...
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WO/2002/038636 |
The invention concerns a catalytic system used for preparing by polymerisation diene elastomers comprising polyisoprenes and polybutadienes, a method for preparing said catalytic system and a preparation method, using said catalytic syst...
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WO/2002/030997 |
A catalyst system suitable for use in the production of high cis polybutadiene is disclosed. The catalyst system includes a cobalt salt of the formula CoA¿x?, where A is a monovalent or divalent anion and x is 1 or 2; an alkyl aluminum ...
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WO/2002/006354 |
Deaminatively generated carbocations to initiate addition polymerization are disclosed. The high reactivity of the carbocation allows initiation of polymerization with virtually all alkenes, alkynes, alicyclic and aromatic monomers, rega...
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WO/2001/098407 |
Crosslinkable rubber compositions which can be crosslinked at room temperature, exhibit gelation times of 30 days or below at room temperature, and can give through room-temperature crosslinking crosslinked rubber sheets having tensile e...
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