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7588794 |
Coatings for drug delivery devices based on poly (orthoesters)
A polymer coating for implantable medical devices based on polyorthoesters and methods for fabricating the coating are disclosed. The implantable medical devices made of polyorthoesters and methods...
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7579413 |
Hyperbranched polymer modified biopolymers, their biobased materials and process for the preparation thereof
Compositions of biodegradable polymers and hyperbranched dendritic polymer (HBP) are described. The compositions can also include anhydride modified HBP. The resulting compositions have superior...
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7511103 |
Poly(ester amide) block copolymers
Provided herein is a copolymer that includes a soft block (A) and a hard block (B) comprising a tyrosine di-peptide. The copolymer can be any of AB, ABA or BAB type block copolymers. The soft block...
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7488783 |
Method for the production of polyactide from a solution of lactic acid or one of the derivatives thereof
A process for the production of polylactide, the stages of which for the production and purification of lactide, starting from an aqueous solution of lactic acid or of its derivatives, includes...
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7465770 |
Environmentally degradable polymeric compounds their preparation and use as hot melt adhesive
The invention is directed to a method for preparing an environmentally degradable polymeric compound as well as to such a compound per se and to its use. A compound of the present invention...
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7465415 |
Photochromic materials derived from ring-opening monomers and photochromic initiators
Various non-limiting embodiments disclosed herein related to photochromic materials comprising the reaction product of (a) at least one ring-opening cyclic monomer, and (b) a photochromic...
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7420020 |
Resin particles and producing method thereof, toner for developing electrostatic latent image and producing method thereof, electrostatic latent image developer as well as image forming method
A producing method of resin particles, which comprises at least an emulsification step of emulsifying a composition containing at least a polymerizable monomer and a polymerization step to form...
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7419703 |
Thermally curable, thixotropic blends containing carbamate and/or allophanate groups
The invention provides heat-curable thixotropic mixtures containing carbamate and/or allophanate groups, including at least one oligomer and/or polymer containing at least one of carbamate and...
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7390497 |
Poly(ester amide) filler blends for modulation of coating properties
Provided herein is a PEA polymer blend and coatings or implantable devices formed therefrom. The PEA polymer blend is formed of a PEA polymer and a material capable of hydrogen bonding with the...
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7241832 |
Biodegradable polymer blends for use in making films, sheets and other articles of manufacture
Biodegradable polymer blends suitable for laminate coatings, wraps and other packaging materials are manufactured from at least one “hard” biopolymer and at least one “soft” biopolymer....
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7238364 |
Compliant tissue sealants
An improved barrier or drug delivery system which is highly adherent to the surface to which it is applied is disclosed, along with methods for making the barrier. In the preferred embodiment, the...
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RE39713 |
Polymerizable biodegradable polymers including carbonate or dioxanone linkages
Water-soluble macromers including at least one hydrolysable linkage formed from carbonate or dioxanone groups, at least one water-soluble polymeric block, and at least one polymerizable group, and...
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7223831 |
Biodegradable resin composition
A biodegradable resin composition comprising polylactic acid and nanosheeted layered titanic acid characterized in that the nonasheeted layered titanic acid is nanosheeted layered titanic acid...
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7192437 |
High strength fibers of l-lactide copolymers, ε-caprolactone, and trimethylene carbonate and absorbable medical constructs thereof
The present invention is directed to crystalline copolymers of l-lactide and a minor portion of a cyclic monomer, preferably ε-caprolactone or trimethylene carbonate or both. The present...
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7179867 |
Thermosensitive biodegradable copolymer
A thermo-sensitve copolymer of following formula;
is disclosed; wherein R 1 is hydrogen, or —C(═O)—R 2 ; R 2 is C 7-30 alkyl substituted or unsubstituted with functional groups; R 3 ...
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7151142 |
Biodegradable aliphatic polyester grafted with poly(ethylene glycol) having reactive groups and preparation method thereof
The present invention is directed to a poly(ethylene glycol)-grafted aliphatic polyester represented by Formula 1:
wherein X is an aliphatic ester, R is hydrogen or C 1-5 alkyl, Z is the...
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7148315 |
Monomer addition techniques to control manufacturing of bioabsorbable copolymers
Monomer addition methodology is provided to adjust monomer addition rates to a polymerization reactor. Advantages of the invention include control of bioabsorbable copolymer structure, improvement...
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7144976 |
Coumarin endcapped absorbable polymers
The present invention includes photocurable, liquid polymers incorporating coumarin ester endgroups into their molecular structure, which polymers are crosslinked upon irradiation with ultraviolet...
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7141643 |
Alkylene oxide-lactone copolymers
A block copolymer is disclosed, which comprises a first block comprising polymerized units of an alkylene oxide and a second block comprising polymerized units of an alkylene oxide and a lactone,...
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7135523 |
Nanoscale helical microstructures and channels from chiral poly(L-lactide) block containing block copolymers
A method for making a series of nanoscale microstructures, including helical microstructures and cylindrical microstrustures. This method includes the steps of: (1) forming a chiral block copolymer...
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7129319 |
Amorphous polymeric polyaxial initiators and compliant crystalline copolymers therefrom
An absorbable crystalline, monocentric polyaxial copolymer comprising a central carbon or nitrogen atom and at least three axes, each of which includes an amorphous flexible component adjacent and...
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7105629 |
Coumarin endcapped absorbable polymers
The present invention includes photocurable, liquid polymers incorporating coumarin ester endgroups into their molecular structure, which polymers are crosslinked upon irradiation with ultraviolet...
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7097907 |
Bioabsorbable branched polymers containing units derived from dioxanone and medical/surgical devices manufactured therefrom
Star polymers of soft segment forming monomers are useful in forming surgical devices. The star polymers can be endcapped with isocyanate, mixed with a filler and/or cross-linked. The polymer...
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7094864 |
Process of continuously producing polyester polymer
The present invention uses a reactor that combines devices having a special portion structure to solve the difficulty of uniform blending due to the reactants becoming highly viscous, the...
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7071288 |
Terpolymers from lactide
The present invention is generally directed to a process for producing lactide-based polymers and the polymers produced by this process. The polymers of the present invention are terpolymers formed...
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7070858 |
Amorphous polymeric polyaxial initiators and compliant crystalline copolymers therefrom
An absorbable crystalline, monocentric polyaxial copolymer comprising a central carbon or nitrogen atom and at least three axes, each of which includes an amorphous flexible component adjacent and...
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7067596 |
Ternary mixtures of biodegradable polyesters and products manufactured from them
The invention relates to a mixture of biodegradable polyesters which includes an aromatic-aliphatic polyester (A), an aliphatic polyester (B) and a polylactic acid polymer (C) in which the...
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7048753 |
Coated, slow-absorbing textile constructs for sutures and tissue engineering
The present invention is directed to crystalline copolymers of l-lactide and a minor portion of a cyclic monomer, preferably ε-caprolactone or trimethylene carbonate or both. The present...
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7041417 |
Imaging process and products providing durable assemblages
This invention relates to an image receiving layer ( 22 ) of a receiver element ( 20 ) for laser-induced thermal transfer imaging processes. The image receiving layer ( 22 ) is made from a...
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7030263 |
Method of preparing a carbamate- or urea-functional compound
A method of preparing a carbamate or urea-functional compound is described comprising the step of reacting a lactone or hydroxy carboxylic acid with a compound (A) comprising a carbamate or urea...
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7026496 |
Diamido alkoxides as polymerisation initiators
The present invention relates to a complex having the formula (I) wherein M is selected from Sn(II), Sn(IV), Al(III) and Mg(II); each of R 1 and R 2 is independently hydrocarbyl; R 3 is H or...
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7026437 |
Amorphous polymeric polyaxial initiators and compliant crystalline copolymers therefrom
An absorbable crystalline, monocentric polyaxial copolymer comprising a central carbon or nitrogen atom and at least three axes, each of which includes an amorphous flexible component adjacent and...
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7019106 |
Lactic acid polymer and process for producing the same
A process for producing a lactic acid polymer of 15,000 to 50,000 in weight-average molecular weight, the content of polymeric materials having not more than about 5,000 in weight-average molecular...
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6974856 |
Block copolymers having polymer segment derived from oxazoline
Disclosed are block copolymers represented by the following general formula (I)
wherein AI represents a hydroxyl group or an organic residue derived from an anionic polymerization initiator, R...
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6911500 |
Thermosetting elastomer composition based on modified polycyanurate with improved thermal resistance
The invention concerns a thermosetting elastomer composition based on modified polycyanurate with improved thermal resistance obtainable by a polymerization method in the presence of a catalyst (D)...
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6890560 |
Negatively charged amphiphilic block copolymer as drug carrier
The present invention provides an anionic group-containing amphiphilic block copolymer that is biocompatible and biodegradable and, when used as a drug carrier for a cationic drug, provides several...
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6861479 |
Composition and process for the production of a porous layer using the composition
Production of a porous layer includes using a composition which includes a first polymer component and a second polymer component, the first polymer component being polyhydroxyamide and/or...
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6831149 |
Polymerization process using mono-and di-functional initiators to prepare fast crystallizing polylactone copolymers
The present invention is directed to a process for making an absorbable polylactone copolymer prepared in part from about 2 to about 80 mole percent glycolide, which process utilizes a combination...
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6830747 |
Biodegradable copolymers linked to segment with a plurality of functional groups
Biocompatible biodegradable polymer or copolymer is capped at one end and has free hydroxyl at the other end. The free hydroxyl can be reacted to link a plurality of functional groups some or each...
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6828412 |
Degradable polymers
A polymer comprising: a polymeric backbone comprising at least one unit having the structure (I), wherein R-R 4 comprise groups selected from the group consisting of H, C 1 -C 12 alkyl, C 6 -C 18...
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6825284 |
Method for preparing poly-α-hydroxyacrylate aqueous solution
A method for preparing a poly-α-hydroxyacrylate aqueous solution, which comprises reacting a polylactone compound corresponding to poly-α-hydroxyacrylic acid (hereinafter referred to as...
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6797788 |
Thermoplastic aliphatic polyester compositions, preparation method and uses thereof
The invention concerns thermoplastic aliphatic polyester compositions characterized by a melt flow index (RMFI) ranging between 1.1 and 2.5. The invention also concerns a method for preparing said...
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6794484 |
Crystallizable polylactone copolymers prepared from mono- and di-functional polymerization initiators
The present invention is directed to absorbable polylactone copolymers prepared in part from about 2 to about 80 mole percent glycolide, utilizing a combination of a monofunctional polymerization...
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6780813 |
Process for producing DMC catalysts
The invention relates to an improved method of producing double-metal cyanide (DMC) catalysts for the production of polyether polyols by polyaddition of alkylene oxides to starter compounds...
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6767987 |
Lowly lactone-modified reactive monomer composition, acrylic polyol resins produced with the same, curable resin compositions and coating compositions
This invention provides a hydroxyalkyl(meth)acrylate composition modified by a small amount of lactones in which a proportion of monomers having two or more continuous chains of lactone is less...
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6761970 |
Poly(lactic acid) fiber
A poly(lactic acid) fiber has a strength at 90° C. of equal to or more than 0.8 cN/dtex and exhibits significantly satisfactory mechanical properties at high temperatures as compared with...
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6756472 |
Process for producing polymer
A process for producing a biodegradable polymer having free carboxyl at the ω-end charcterized by polymerizing a cyclic ester compound in the presence of a hydroxymonocarboxylic acid derivative...
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6753384 |
Polyurethanes obtained from hydroxyalkanoates and isocyanates
A polyurethane is described which is a reaction product of at least one isocyanate containing material having at least two isocyanate groups and at least one compound having at least two hydrogen...
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6747121 |
Poly(L-lactide-co-glycolide) copolymers, methods for making and using same, and devices containing same
The present invention relates in general to implantable, resorbable copolymers containing L-lactide and glycolide repeat units, and in particular to terpolymers containing L-lactide, glycolide, and...
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6740731 |
Degradation control of environmentally degradable disposable materials
The present invention is directed to a method for reducing waste accumulation by using an environmentally degradable disposable material. The disposable material, which includes a hydroxycarboxylic...
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