Matches 201 - 250 out of 362 < 1 2 3 4 5 6 7 8 >
Match Document Document Title
5314989 Absorbable composition  
A block copolymer for use in the fabrication of bioabsorbable articles such as monofilament surgical sutures is prepared by copolymerizing one or more hard phase forming monomers and...
5310599 Method for making polymers of alpha-hydroxy acids  
A method providing a catalyzed ring opening polyester polymerization at a high reaction rate wherein the amount of organic acid in the reaction medium is maintained at an acid: catalyst ratio below...
5302693 Process for preparing poly-D,L-lactide and the use thereof as a carrier for active substances  
The invention relates to a process for preparing poly-D,L-lactide and its use as a carrier for active substances.
5292859 Rare earth metal coordination compounds as lactone polymerization catalysts  
A process for polymerizing lactide and up to 20 mole percent of another lactone is disclosed. The cayalysts used have the formula MZ 3 wherein M is scandium, yttrium, bismuth, a lanthanide series...
5284938 Polysiloxane modified thermoset compositions  
A polysiloxane-modified epoxy-based encapsulation composition comprising an epoxy resin, a curing agent for the epoxy resin, a polylactone-polysiloxane block copolymer, and a filler is described....
5274073 Continuous process for manufacture of a purified lactide  
A process for the continuous conversion of crude lactic acid to a substantially purified lactide or polylactide including the steps of polymerizing the lactic acid to form a prepolymer with...
5264491 Compatibilization of polymer blends  
Compatibilizing agents suitable for blending otherwise immiscible polymers comprise a block or graft copolymer in which at least one of the block segments is formed by a living anionic...
5264547 Optically active ether lactone, optically active polymer thereof, and process for producing the polymer  
An optically active 7-substituted-1,4-dioxepan-5-one derivative represented by the general formula (I): ##STR1## wherein R represents an alkyl group having from 1 to 5 carbon atoms; and * means an...
5262492 Siloxane-modified polyester resins and production processes thereof  
Siloxane-modified polyester resins are disclosed. These resins comprise a copolymer of a siloxane compound, which contains at least one active hydrogen atom, and a lactone compound. The copolymer...
5256739 Graft copolymer, method of producing the same, and covering composition containing the same as main component  
Graft copolymers containing a vinyl polymer as a trunk polymer component, and both organopolysiloxane and polylactone as a branch polymer component, and methods of producing them. Covering...
5256711 Starch-containing biodegradable plastic and method of producing same  
A biodegradable plastic composition, which may be in the form of a molded dy, includes gelatinized starch and a biodegradable, aliphatic polyester resin having a melting point of 45°-130 ° C. The...
5252701 Segmented absorbable copolymer  
A copolymer comprising a bioabsorbable, segmented molecular architecture has been invented. The copolymer has at least two different ester linkages. The segmented molecular architecture comprises a...
5252642 Degradable impact modified polyactic acid  
An environmentally degradable composition comprises blends of a physical mixture of a poly(lactic acid), comprising about 1 to 99 weight percent of the composition, and an elastomeric blend...
5241000 Curable resin and composition containing the same  
The curable resin having a number average molecular weight of 600 to 6000 and at least two hydrolyzable silyl groups which is prepared by reacting an aliphatic polyester resin having acryloyl group...
5238978 Peroxide masterbatches using polycaprolactone as the carrier  
A masterbatch composition is provided, comprising greater than about 10% to about 70% by weight of organic peroxide homogeneously dispersed in a polycaprolactone carrier. The peroxide masterbatches...
5236444 Absorbable polymers and surgical articles made therefrom  
Block copolymers have a first polymer block wherein glycolide is the predominant component and a second block having glycolide, lactide and trimethylene carbonate linkages. The copolymers are...
5235031 Polymerization of lactide  
A process for polymerizing lactide and up to 20 mole percent of another lactone in the absence of solvent at 100° to 220° C. using an yttrium or lanthanide series rare earth metal catalyst.
5231148 Mixture of predominantly one polyhydroxyalkanoate and a compound which contains at least two reactive groups, such as acid and/or alcohol groups, and a polymer prepared by melting the mixture  
Mixture containing at least 70% by weight of polyhydroxyalkanoate and one or more compounds which contain reactive alcohol and/or acid groups, mixtures of poly-D (-)-3-hydroxybutyric acid with a...
5227412 Biodegradable and resorbable surgical material and process for preparation of the same  
Biodegradable and resorbable surgical materials of molded articles of poly(lactic acid) or copolymers of lactic acid and glycolic acid, characterized in that the articles are molecular-orientated,...
5225489 Composites of thermoplastic and thermoplastic polymers having therein short fibers derived from anisotropic polymers  
This invention relates to mixtures of short fibers of varying lengths, diameters and aspect ratios composed of an anisotropic polymer, to compositions containing said fibers and one or more...
5225521 Star-shaped hydroxyacid polymers  
Star-shaped poly (hydroxyacid) chains and the process for preparing them are disclosed. The star shaped polymers have the residue of a central polyfunctional compound having at least 5 hydroxyl or...
5202413 Alternating (ABA)N polylactide block copolymers  
Polymers of the general formula R--(A-B-A-I)- x A-B-A-R and their preparation are disclosed. In the general formula, -A- is a polyhydroxy acid residue preferably a polymer of either 98 to 100%...
5198500 Process for preparing crosslinked resin particles  
Disclosed is an improved process of the post-emulsion method capable of forming crosslinked resin particles which do not have fusion bonds between particles and which have good storage stability...
5185408 Medical devices fabricated totally or in part from copolymers of recurring units derived from cyclic carbonates and lactides  
This invention relates to novel copolymers containing carbonate repeat units and ester repeat units.
5185421 Fluorinated hydroxy-containing macromonomers  
Disclosed are fluorinated macromonomers containing one or more hydroxy groups, which are useful as monomers in other polymerization. Also disclosed are processes and an intermediate for making such...
5183861 Polyalkyloxazoline/polylactone copolymers, processes for making, and uses  
Block copolymers of polyoxazoline and polylactone moieties can be used as polymeric compatibilizers for polyamides and polyolefins.
5162461 Thermoplastic polyblends of aromatic polycarbonates and thermoplastic polyurethanes  
This invention relates to binary thermoplastic polyblend that comprises a thermoplastic aromatic polycarbonate and a polycaprolactone polyol-based thermoplastic polyurethane (TPU). The polyblends...
5151489 Copolymers containing polybenzoxazole, polybenzothiazole and polybenzimidazole moieties  
Block copolymers can be formed from heterocyclic polymers such as PBO and thermoplastic polymers such as polyamide or poly(aromatic ether ketone). The block copolymer compositions are thermoplastic...
5137984 Non-hairing, moisture curable compositions  
A mixture of hydroxy functional polymers which can be used to form isocyanate prepolymers which are non-hairing at application temperature are disclosed. Examples of suitable mixtures of hydroxy...
5132374 Expoxide flexibilizers based on polylactone adducts  
Adducts of the formula I ##STR1## are described in which R 1 is an e-valent aliphatic radical after the removal of the functional groups, X is --O--or --NH--, R 2 is a d+l-valent...
5132397 4-valerolactone copolymers  
Copolymers of lactic acid, from 0.5 to 20 weight % of 4-valerolactone and from 0 to 20 weight % of a C 6 -8 lactone form polymers having a higher intrinsic viscosity than homopolymers of lactic...
5116918 Crosslinked copolymers based on cyclic esters and carbonates  
Crosslinked copolymers of A) cyclic aliphatic esters and B) cyclic aliphatic carbonates in which part of B contains crosslinking-active side groups, their production and their use for...
5112887 Formable coatings  
A coating composition capable of substantial deformation without loss of continuity, adhesion or protective properties. The coating composition comprises a phenoxy resin mixed with a relatively...
5106446 Polyurethane mixtures and the use thereof as adhesives  
The present invention is directed to a mixture which can be used as an adhesive. The mixture broadly contains 1) a hydroxy group containing polyurethane, and 2) a polycarbonate and/or a...
5089561 Alkylcarbamylmethylated aminotriazine crosslinking agents and curable compositions containing the same  
Novel alkylcarbamylmethyl aminotriazines self-cure and also function as crosslinkers for compounds containing active hydrogen groups. When the active hydrogen-containing compounds are hydroxylated...
5089568 Process of making thermoplastic copolymers containing polybenzoxazole, polybenzothiazole and polybenzimidazole moieties  
Block copolymers can be formed from heterocyclic polymers such as PBO and thermop STATEMENT OF GOVERNMENT INTEREST This invention was made with Government support under contracts F49620-86-C-0057...
5084524 Block copolymers based on cyclic aliphatic carbonates and/or esters on the one hand and cyclic aromatic carbonates on the other hand  
Copolymers of blocks of polymers of cyclic aliphatic carbonates, cyclic aliphatic esters or cyclic aliphatic carbonates and cyclic aliphatic esters on the one hand and blocks of polymers of cyclic...
5076983 Polyhydroxy acid films  
The present invention relates to a process for producing degradable, shrinkable films of polyhydroxy acid and plasticizers including melt processing the materials to obtain uniform composition,...
5047048 Crystalline copolymers of p-dioxanone and ε-caprolactone  
Crystalline copolymers of ε-caprolactone and a monomer having the formula: ##STR1## Surgical filaments, especially monofilament sutures, prepared by melt spinning the crystalline copolymers...
5043398 Grafting of functional compounds onto functional oxymethylene polymer backbones, with diisocyanate coupling agents, and the graft polymers thereof  
Novel oxymethylene graft polymers are obtained by grafting a functional compound (i.e., a polymer or compound having one or two hydroxyl, carboxyl, or amine functional groups) onto an oxymethylene...
5041493 Moldable polyblends  
A moldable polyblend of an aromatic polycarbonate, a polyester of an aromatic dicarboxylic acid, an elastomeric rubber, and a polylactone, which polylactone is present within the range of from...
5037898 Polysiloxane-polylactone block copolymer modified thermostat compositions  
A polysiloxane-modified epoxy-based encapsulation composition comprising an epoxy resin, a curing agent for the epoxy resin, a polylactone-polysiloxane block copolymer, and a filler is described....
5037899 Lactone-primary amine modified epoxy resin and process for preparing the same  
A modified epoxy resin provided with improved flexibility and curing properties is prepared by subjecting a bisphenol type epoxy resin (a) to steps (i) and (ii): (i) the step wherein the epoxy...
5010145 Polylactic acid fiber  
A polylactic acid fiber comprises a blend of poly-L-lactic acid and poly-D-lactic acid and is improved by spinning and then drawing.
5007939 Article made of lactic acid polymer capable of being employed particularly as a biodegradable prosthesis and process for its manufacture  
Article made of lactic acid polymer capable of being employed particulaly as a biodegradable prosthesis exhibiting at 23° C. a tensile regidity modulus higher than 5000 MPa and a tensile...
5007923 Crystalline copolyesters of amorphous (lactide/glycolide) and p-dioxanone  
A crystalline copolyester of p-diaxanone and a prepolymer of lactide and glycolide, and absorbable surgical filaments derived therefrom.
5003038 Process for the manufacture of vinyl chloride polymers modified with lactone polymers and product thereof  
In a first stage, a lactone is polymerized by an ionic route in vinyl chloride with the aid of a catalyst consisting of the product, optionally complexed with tetrahydrofuran, of the reaction of an...
5003025 Process for the preparation of water dilutable binders for cationic electrocoating finishes using monofunctionally modified polyepoxides  
The invention relates to water-dilutable binders for cationic electrocoating finishes. For the preparation of the binders, a di-epoxide compound, together with at least one mono-epoxide compound if...
4983689 Process for making macromolecular monomers of polylactones with terminal acryloyl unsaturation and block copolymers thereof  
Preparation of a macromolecular monomer of a lactone having an alpha-beta monoolefinically unsaturated "head" is effected at low temperature with a strong oxonium salt, such as a trialkyloxonium...
4965300 Sequential copolymers based on cyclic carbonates and esters  
Polymers having a sequential structure of the following formula --A--X--B] r (I) with r=1 to 20, in which --A-- is a polymer of a cyclic carbonate,...
Matches 201 - 250 out of 362 < 1 2 3 4 5 6 7 8 >