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Matches 451 - 500 out of 3,624

Document Document Title
WO2000019976A3
The invention comprises biodegradable terephthalate polymers comprising the recurring monomeric units shown in formula (I), wherein R is a divalent organic moiety; R' is hydrogen, an aliphatic, aromatic or heterocyclic residue; x is >/= ...  
WO/2000/025826A1
The present invention pertains to biodegradable polymers comprising a non-polymerizable lactone, biodegradable compositions comprising the polymer and a therapeutic agent, the use of the compositions for the sustained release of therapeu...  
WO/2000/024364A1
The present invention relates to compositions consisting essentially of a narrow dispersity trimethylsilylated silica in a volatile and/or non-volatile silicone-aliphatic hydrocarbon hybrid fluid. Improvements in the range of properties ...  
WO/2000/022052A1
The invention relates to high-temperature resistant polymerizable metal oxide particles with a glass transition temperature of the homopolymerizate $m(G)100 °C and having a core A. Said core consists of an oxide of a metal or semimetal ...  
WO/2000/019976A2
The invention comprises biodegradable terephthalate polymers comprising the recurring monomeric units shown in formula (I), wherein R is a divalent organic moiety; R' is hydrogen, an aliphatic, aromatic or heterocyclic residue; x is $m(G...  
WO/2000/017209A1
A catalytically active aluminoxane can be synthesized from a precursor formed by the combination of at least one trialkylaluminum compound, such as trimethylaluminum, and at least one organoaluminum compound containing a carbon-oxygen bo...  
WO1999037705A9
Highly mesoscopically ordered, hydrothermally stable and ultra large pore size metal oxide-block copolymer composite or mesoporous films, fibers, and monoliths are formed using amphiphilic block copolymers which act as structure directin...  
WO/2000/009515A1
A composition comprising a mixture of aluminum containing Lewis acids, said mixture corresponding to the formula: (Ar?f¿¿3?Al)(AlQ?1¿¿3?)¿y?(-AlQ?2¿-O-)¿z? where Ar?f¿ is a fluorinated aromatic hydrocarbyl moiety of from 6 to 30 ...  
WO/2000/009518A1
A flame retardant which has advantages, for example, that it is halogen-free, has a high melting point, is lowly volatile, and does not impair the properties inherent in resins. The flame retardant comprises a cross-linked phenoxyphospha...  
WO/2000/009578A1
A composition of matter, comprising: a chemically functionalized carboxylate-alumoxane that is functionalized with a chemically reactive substituent, and a reactive compound, wherein the chemically reactive substituent reacts with the re...  
WO/2000/004074A1
A method for making poly(dichlorophosphazene) using solid state reactants is disclosed and described. The present invention improves upon previous methods by removing the need for chlorinated hydrocarbon solvents, eliminating complicated...  
WO/2000/002869A1
Salt of a 1,3,5-triazine compound with polyphosphoric acid with a virtually linear structure, with the number average degree of condensation n being higher than 20, the content of the 1,3,5-triazine compound being higher than 1.1 mole pe...  
WO/1999/055758A1
A polymer having a backbone repeat unit that includes at least two metal atoms bonded to each other and only one ethylenically unsaturated functional group wherein the backbone unit preferably has a structure of: -C(R?3¿)=C(R?3¿)-[C(R?...  
WO/1999/054412A1
The invention relates to a solid, meltable and thermohardening mass, comprising condensates (K) derived from at least one hydrolyzable silane and possibly one or more hydrolyzable metal compounds. Groups (A) positioned on the central ato...  
WO/1999/046314A1
A flame-retardant resin composition containing a flame-retardant resin which is a polyester resin having a phosphazene flame retardant bonded to the polymer molecules through ester groups. It is reduced in volatilization with time, retai...  
WO/1999/037705A1
Highly mesoscopically ordered, hydrothermally stable and ultra large pore size metal oxide-block copolymer composite or mesoporous films, fibers, and monoliths are formed using amphiphilic block copolymers which act as structure directin...  
WO/1999/032537A1
There is described a polymeric material comprising at least one repeat unit, the or each (if more than one) repeat unit consisting substantially of a moiety of Formula (1) in which: Y?1¿ represents, independently if in different repeat ...  
WO1999016477A3
The invention relates to a radioactively marked antithrombogenic polymer and the use thereof as a component of therapeutic devices for preventing excessive cell proliferation or scarring. The invention also relates to devices which conta...  
WO/1999/023100A1
Azaboroxines of formula (I) wherein R and R', which may be the same or different, each represents an alkyl, an aryl, a cycloalkyl or heterocyclic group which may be unsubstituted or substituted with a least one halogen atom, R possibly a...  
WO1999000446A9
A process for making a high molecular weight poly(phosphoester) comprising the recurring monomeric units of formula (I), wherein X is -O- or -NR"-, where R" is H or alkyl; L is a divalent organic moiety, with the proviso that L cannot ha...  
WO/1999/016477A2
The invention relates to a radioactively marked antithrombogenic polymer and the use thereof as a component of therapeutic devices for preventing excessive cell proliferation or scarring. The invention also relates to devices which conta...  
WO1999000446A8
A process for making a high molecular weight poly(phosphoester) comprising the recurring monomeric units of formula (I), wherein X is -O- or -NR"-, where R" is H or alkyl; L is a divalent organic moiety, with the proviso that L cannot ha...  
WO/1999/009038A1
A process for producing a polyorganophosphazene from a polyhalophosphazene. The polyhalophosphazene is reacted with a metal salt of an alkyl ester of hydroxybenzoic acid wherein the metal salt of the alkyl ester of hydroxybenzoic acid is...  
WO/1999/009072A1
This invention relates generally to optic devices such as lenses, (monofocal and multifocal), progressive lenses, lens blanks, and lens preforms having a specific formula.  
WO/1999/002537A1
A surfactant composition comprising formula (1): wherein X is (2): wherein R and R¿1? independently represent the same or different C¿1? to C¿36? straight or branched chain alkyl, alkylene, aryl, alkylaryl and arylalkyl, said R and R...  
WO/1999/000446A1
A process for making a high molecular weight poly(phosphoester) comprising the recurring monomeric units of formula (I), wherein X is -O- or -NR'-, where R' is H or alkyl; L is a divalent organic moiety, with the proviso that L cannot ha...  
WO/1998/058014A1
A method for producing a polyorganophosphazene, such as, for example, poly[di(carboxylatophenoxy)phosphazene], from polydichlorophosphazene. The polydichlorophosphazene is reacted with at least one nucleophilic reagent at a defined molar...  
WO/1998/058012A1
A process for making a phosphoester polymer comprising the recurring monomeric units of formula (I), wherein X is -O- or -NR'-, where R' is H or alkyl; L is a divalent organic moiety; R' is H, alkyl, alkoxy, aryl, aryloxy, heterocyclic, ...  
WO/1998/052993A1
The present invention provides a boron-containing polymer material having self-adaptive protective functional structure and its preparation, said material has boryl or boroxy center constituting main structure together with organic activ...  
WO/1998/051740A2
A method for purification of a polyphosphazene polyacid or acid salt thereof in which a polyphosphazene polyacid or acid salt thereof is dissolved in a concentrated aqueous solution of a salt of monovalent ions. The resulting aqueous sol...  
WO/1998/051730A1
A method for purification of a polyphosphazene polyacid or acid salt thereof in which a polyphosphazene polyacid or acid salt thereof is dissolved in a concentrated aqueous solution of a salt of monovalent ions. The resulting aqueous sol...  
WO/1998/048859A1
Biodegradable, flowable or flexible polymer compositions are described comprising a polymer having the recurring monomeric units shown in formula (I), wherein: each of R and R' is independently straight or branched alkylene, either unsub...  
WO/1998/046286A1
Biodegradable polymers are described comprising the recurring monomeric units shown in formula (I), wherein R is selected from the group consisting of H, alkyl, aryl or heterocyclic; and R' is selected from the group consisting of H, alk...  
WO/1998/044020A1
Biodegradable polymers are described comprising the recurring monomeric units shown in formula (I) or (II) wherein X is -O- or -NR'-, where R' is H or alkyl; L is a branched or straight chain aliphatic group having from 1-20 carbon atoms...  
WO/1998/039386A1
A process for recovering a polyphosphazene polyacid or acid salt obtained by hydrolyzing a polyphosphazene having at least one ester moiety present in at least one substituent group. The polyphosphazene having at least one ester moiety p...  
WO/1998/035921A1
The present invention relates to novel C/N and B/C/N polymers which can be obtained by reacting carbodiimides R�3?E-NCN-ER�3? (R = alkyl, aryl; E = Si, Ge, Sn) with halogen triazines and to the use thereof in the production of C/N an...  
WO/1998/029472A1
The present invention relates to ceramic-forming organosilicon polymers with metal clusters, wherein said polymers correspond to the general formula (1), where E is SiR�2?, NR, (II), (III), (IV), (V), cyclo-(SiR�2?NR)�x?, (CB�10?...  
WO/1998/021145A1
A solution which comprises a polyphosphazene solute, such as a polyhalophosphazene solute, and a stabilizing solvent such as diglyme. Such solution enables the polyphosphazene to remain stable for extended periods of time so that such po...  
WO/1998/018801A1
A hydrocarbon-soluble alkylaluminoxane composition, such as, methylaluminoxane or even a modified methylaluminoxane, can be prepared by preparing an alkylaluminoxane precursor via non-hydrolytic means, such as, by treating at least one t...  
WO/1998/000531A1
A method of preparing polyphosphazene microspheres wherein the polyphosphazene microspheres are produced by coacervation. In one embodiment, a solution containing a polyphosphazene is admixed with a dehydration agent, such as a solution ...  
WO/1997/044377A1
A melamine polymetaphosphate having a solubility of from 0.01 to 0.10 g/100 ml in water at 25 �C, a pH of from 2.5 to 4.5 in the form of a 10 wt.% aqueous slurry at 25 �C and a melamine content of from 1.0 to 1.1 mol per mol of phosp...  
WO/1997/043320A1
Alumoxanes, and especially methylalumoxane, which provide supported metallocene and/or transition metal catalyst compositions having increased activity, are prepared by heating the alumoxane prior to placing it on the support.  
WO/1997/040054A1
Aluminoxane is made by feeding water, hydrocarbylaluminum and organic solvent to a loop recyle reactor under conditions so as to react the water and hydrocarbylaluminum to form a hydrocarbylaluminoxane, removing a portion of the solvent ...  
WO1997022893A3  
WO1997024635A3  
WO1997024223A3  
WO/1997/027049A1
Substituted compounds having relatively large molecular first order hyperpolarizabilities are provided, along with devices and materials containing them. In general, the compounds bear electron-donating and electron-withdrawing chemical ...  
WO/1997/024635A2
This invention concerns the joinder of optical waveguide structures and their substrates, methods for joining, attaching or connecting the waveguide structures, and/or materials which can be utilized for constructing such attachments or ...  
WO/1997/024223A2
This invention is directed to novel silica compositions, metal silicates, germanosilicates, and metal germanosilicates, and patterned objects and films comprising the same. It also includes methods and compositions for making these films...  
WO/1997/023488A1
An organic alumino-oxy compound having an A1 to A2 ratio of 0.1 or below in the 27Al-NMR spectrum of the compound wherein A1 is the area of the region enclosed by both the segment, which joins the minimum point found between two consecut...  

Matches 451 - 500 out of 3,624