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| Number | Title | Issue Date |
| 8163866 | Aromatic polyester resin composition An aromatic polyester resin composition, including: a melt-kneaded product of 99-70 wt. parts of an aromatic polyester resin and 1-30 wt. parts (providing a total of 100 wt. parts together with the aromatic polyester resin) of a polyglycolic acid resin, wherein the ... | 04/24/2012 |
| 7786251 | Process for producing polyester ether poly- or mono-ol To provide a process for producing a polyester ether poly- or mono-ol having a narrow molecular weight distribution, which is obtained by copolymerizing an initiator having hydroxyl groups with a cyclic ester compound and an alkylene oxide. It is possible to ... | 08/31/2010 |
| 7309756 | Methods for converting linear polyesters to macrocyclic oligoester compositions and macrocyclic oligoesters Macrocyclic oligoesters and compositions comprising macrocyclic oligoesters are prepared from intermediate molecular weight polyesters. In one embodiment, a diol is contacted with a dicarboxylic acid or a dicarboxylate in the presence of a catalyst to produce a comp... | 12/18/2007 |
| 7202326 | Glycolic acid copolymer and method for production thereof A glycolic acid copolymer comprising (a) 80 to less than 95% by mole of glycolic acid monomer units, (b) 5.0 to 20.0% by mole of non-glycolic, hydroxycarboxylic acid monomer units, and (c) 0 to 0.10% by mole of diglycolic acid monomer units, the non-glycolic, hydrox... | 04/10/2007 |
| 7192437 | High strength fibers of -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 copolymers have a melting temperature of at least 150° C. and a crystallinity... | 03/20/2007 |
| 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 C1-5 alkyl,... | 12/19/2006 |
| 7151143 | Blends containing macrocyclic polyester oligomer and high molecular weight polymer The invention provides blends of macrocyclic polyester oligomer (MPO) with high-molecular-weight polymer and polymerization catalyst as friable, one-component, ready-to-polymerize materials with long shelf life. The invention also provides methods for preparation an... | 12/19/2006 |
| 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 of monomer conversion, control of reaction temperature, and reduced r... | 12/12/2006 |
| 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 light by photochemically allowed [2+2] cycloaddition reactions among ... | 12/05/2006 |
| 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, said copolymer being obtainable by polymerizing an alkylene oxide in t... | 11/28/2006 |
| 7138439 | Biodegradable compounds including poly(lactic acid) polymer compositions and products The present invention relates to biodegradable polymer compositions comprising poly(lactic acid) and co-polyester polymer with adipic acid mixed with organic peroxide and mineral particles. In addition, the present invention relates to products made on the basis of ... | 11/21/2006 |
| 7138179 | Method for preparing biodegradable polyester and itself prepared thereby Disclosed is a method for preparing a biodegradable polymer in the form of uniform powder or spherical particles by dispersion polymerization without a grinding step. The method for preparing a biodegradable polyester includes dispersing a monomer in the presence of... | 11/21/2006 |
| 7135025 | Surgical implant A surgical implant made of a polymer, copolymer, polymer mixture or polymer composite that dissolves in the organ system. The manufacturing material is dyed with the coloring agent D&C Violet No. 2 or D&C Green No. 6. Preferably, the amount of the coloring agent is ... | 11/14/2006 |
| 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 originating from the central atom and a rigid, crystallizable compone... | 10/31/2006 |
| 7101959 | Polymerization catalysts A subject of the present invention is new compounds having a lanthanide and having a tridentate ligand, a process for their preparation and their use in particular as polymerization catalysts. ... | 09/05/2006 |
| 7094840 | Compositions comprising low molecular weight polyhydroxyalkanoates and methods employing same Polyhydroxyalkanoate compositions including hot melt adhesive compositions, biodegradable wax compositions, and protective coating compositions are provided and include a low molecular weight polyhydroxyalkanoate, a terminally-modified polyhydroxyalkanoate, or both.... | 08/22/2006 |
| 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 difficulty of heat removal, and the increase in pressure loss, thus leading to... | 08/22/2006 |
| 7087247 | Polyesters, method for producing same, and depot medicaments produced from these polyesters The invention relates to novel absorbable polyesters, produced by ring-opening polymerisation of hydroxycarboxylic acids in the presence of a polyol containing an electrolyte, in an extruder. In particular, the invention relates to novel polylactide glycolide polyes... | 08/08/2006 |
| 7074883 | Acid end group poly(D,L-lactide-co-glycolide) copolymers with high glycolide content Copolymers of lactide and glycolide with high glycolide content. The average glycolate block length is less then about 3, which allows the copolymer to be soluble in slightly polar solvents such as methylene chloride. ... | 07/11/2006 |
| 7071291 | Isolation, formulation and shaping of macrocyclic oligoesters Processes for isolating, formulating, and shaping macrocyclic oligesters were developed which allow efficient production of macrocyclic oligoesters substantially free from solvent, which may include additives, fillers, and catalysts. ... | 07/04/2006 |
| 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 originating from the central atom and a rigid, crystallizable compone... | 07/04/2006 |
| 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 by the copolymerization of a lactide monomer, a linking monomer and ... | 07/04/2006 |
| 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 R1 and R2 is independently hydrocarbyl; R3 is H or hydrocarbyl; and X is a linker group. A furth... | 04/11/2006 |
| 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 originating from the central atom and a rigid, crystallizable compone... | 04/11/2006 |
| 7022806 | Methods for converting linear polyesters to macrocyclic oligoester compositions and macrocyclic oligoesters Macrocyclic oligoesters and compositions comprising macrocyclic oligoesters are prepared from intermediate molecular weight polyesters. In one embodiment, a diol is contacted with a dicarboxylic acid or a dicarboxylate in the presence of a catalyst to produce a comp... | 04/04/2006 |
| 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 weight therein being not more than about 5% by weight, characterized... | 03/28/2006 |
| 6994914 | Macrocyclic polyester oligomers and processes for polymerizing the same A water slurry process is used to prepare a prepreg and to manufacture articles from macrocyclic polyester oligomers. In one embodiment, a process for preparing a water suspension of macrocyclic polyester oligomers includes the steps of contacting a macrocyclic poly... | 02/07/2006 |
| 6962968 | Purification of macrocyclic oligoesters Acid impurities, such as carboxylic acid-terminated polymers, are removed from macrocyclic oligoesters with ion exchange resins, resulting in macrocyclic oligoesters that are substantially free of acid impurities. The ion exchange resins can be regenerated anew and ... | 11/08/2005 |
| 6960626 | Intimate physical mixtures containing macrocyclic polyester oligomer and filler The invention provides intimate physical mixtures of macrocyclic polyester oligomer (MPO) and filler, as well as methods for their preparation and use. Improved dispersion of filler in a polymer matrix is achieved upon polymerization, and larger amounts of filler wi... | 11/01/2005 |
| 6916547 | Multi-functional unsaturated polyester polyols Novel multifunctional unsaturated polyester polyols, UV-curable top coat formulations including these polyols, and a one-step process for preparing these polyols, are disclosed. Surface coverings and surface covering components including these top coat formulations ... | 07/12/2005 |
| 6913826 | Biodegradable polyester polymer and method for preparing the same using compressed gas In polymerizing biodegradable polymer material, a compressed gas is used as a reaction solvent for a solution-polymerization, in order to prepare biodegradable polyester homopolymer and copolymer with a high molecular weight in a fine powder form with a particle siz... | 07/05/2005 |
| 6911522 | Filled epsilon-caprolactone based polymer compositions, method for preparing same and articles based on said compositions Compositions based on ε-caprolactone polymer, comprising at least one ε-caprolactone polymer and calcium carbonate. Process for preparing these compositions, which are used for manufacturing articles, in particular films, preferably obtained by extrusion blow-moul... | 06/28/2005 |
| 6906147 | Catalytic systems This invention relates to single-component and multi-component catalytic systems using aryl titanates. Aryl titanate compounds are useful as catalysts and co-catalysts in single-component and multi-component catalytic systems (e.g., for the polymerization of macrocy... | 06/14/2005 |
| 6875839 | Method for producing polylactic acid and corresponding device The invention relates to a method for producing polylactic acid, comprising the steps of obtaining lactic acid from starchy agricultural products by fermentation, ultrapurification of the lactic acid by ultrafiltration, nanofiltration and/or electrodialysis, concent... | 04/05/2005 |
| 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 of a monofunctional polymerization initiator and a di-functional poly... | 12/14/2004 |
| 6825314 | Process for the preparation of cyclic lactic acid oligomers The object of the present invention is to provide a novel method for effectively producing a cyclic lactic acid oligomer, and a cyclic lactic acid oligomer produced by the method. According to the present invention, there is provided a method for producing a cyclic ... | 11/30/2004 |
| 6794485 | 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 originating from the central atom and a rigid, crystallizable compone... | 09/21/2004 |
| 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 acid-containing polymer, degrades hydrolytically during operative an... | 05/25/2004 |
| 6730772 | Degradable polymers from derivatized ring-opened epoxides A polymer of a ring-opened functionalized epoxide is formed by the polymerization of a functionalized epoxide monomer having the structure E-CHR-G wherein E represents an epoxide group, R is hydrogen or an alkyl group, and G is a derivatizable group such as an unsat... | 05/04/2004 |
| 6703477 | Acid end group poly(D,L-lactide-co-glycolide) copolymers with high glycolide content Copolymers of lactide and glycolide with high glycolide content. The average glycolate block length is less then about 3, which allows the copolymer to be soluble in slightly polar solvents such as methylene chloride.... | 03/09/2004 |
