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| Number | Title | Issue Date |
| 7714097 | Polymer synthesis from macrocycles A synthetic route is provided to prepare poly(ω-hydroxycarboxylic acid) polymers via the ring-opening polymerization of ω-hydroxycarboxylic acid cyclic oligomers. The cyclic oligomers can be prepared directly from biorenewable sources, such as 3-hydroxypropionic a... | 05/11/2010 |
| 7342086 | Aliphatic polyester polyether copolymer, process for producing the same and aliphatic polyester composition using the copolymer An aliphatic polyester polyether copolymer is provided having an aliphatic polyester moiety comprising 35 to 50 molar % of an aliphatic diol unit, 35 to 50 molar % of an aliphatic dicarboxylic acid unit and 0 to 30 molar % of an aliphatic oxycarboxylic acid unit and... | 03/11/2008 |
| 7309497 | Injectable pharmaceutical composition for systematic administration of pharmacologically active ingredients The invention relates to novel pharmaceutical compositions for the systemic administration of pharmacologically active ingredients. The invention relates in particular to an injectable pharmaceutical composition comprising (a) a pharmacologically active ingredient i... | 12/18/2007 |
| 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 |
| 7247261 | Nonlinear optical material with nano-sized dendrimer structure The present invention relates to a non-linear optical material having a dendrimer structure; and, more particularly, to a non-linear optical material having organic chromophores at the ends and formed based on ester linkages and/or ether linkages. Since the non-line... | 07/24/2007 |
| 7217770 | Stable polymeric micelle-type drug composition and method for the preparation thereof A biocompatible stable composition containing a hydrophobic drug, such as paclitaxel. The composition, which forms a syringeable polymeric micellar solution in aqueous or body fluids, is a freeze-dried product comprising a hydrophobic drug, i.e. paclitaxel, and an a... | 05/15/2007 |
| 7175917 | Biaxially oriented polylactic acid-based resin films The present invention provides a biaxially oriented film of a polylactic acid resin that is suitable for films for bags and packaging films for various windows, particularly films for outlook window envelopes. The film is biodegradable and, as films for outlook wind... | 02/13/2007 |
| 7153523 | Biologically absorbable polyhydroxycarboxylic acid and production method thereof A biologically absorbable polyhydroxycarboxylic acid in which a content of water-soluble acid components is not more than 0.07 mol/kg in terms of monobasic acids, and which has a weight average molecular weight of 4,000 to 100,000 and contains neither a catalyst nor... | 12/26/2006 |
| 7151155 | Copolymers of cyclic esters and cyclic formals Disclosed are copolymers of cyclic esters, e.g., caprolactone, and cyclic formals of substituted or unsubstituted diols, e.g., 1,3-dioxepane. The copolymers can provide a low melting temperature rendering them liquids at room temperature. Elastomeric polyurethanes p... | 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 |
| 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 |
| 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 |
| 7115631 | Methods for treatment of cognitive and menopausal disorders with D-threo methylphenidate In one aspect, the present invention is directed to methods for treating fatigue, neurobehavioral slowing and other cognitive disorders and defects due to cancers and treatments associated with cancers, and similar conditions. In a further aspect, the present invent... | 10/03/2006 |
| 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 light by photochemically allowed [2+2] cycloaddition reactions among ... | 09/12/2006 |
| 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 |
| 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 |
| 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 |
| 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 |
| 6864351 | ALIPHATIC COPOLYESTER RESIN, A PREPARATION METHOD, AN ALIPHATIC POLYESTER RESIN COMPOSITION, USES THEREOF, A COATING COMPOSITION, A PARTICLE-STATE COMPOSITION FOR AGRICULTURE AND GARDENING COATED BY DEGRADABLE LAYER In the present invention, there are obtained aliphatic polyesters having a controlled thermal decomposing property, hydrolizability, and biodegradability, in which OH terminals and COOH terminals are decreased to 50% and 30%, respectively, through a ring-opening pol... | 03/08/2005 |
| 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 |
| 6812298 | Hyperbranched polymers by multimonomer polymerization Hyperbranched polymers are prepared by a process in which a monomer having the form Ax is reacted with another monomer of the form By, where A and B are functional groups that do not react with themselves, but do react with each other. The proc... | 11/02/2004 |
| 6806346 | Copolymerization of cyclic ester oligomers Chemically different cyclic ester oligomers can be copolymerized to form copolyesters whose properties can be tailored by the choice of cyclic ester oligomers used. The copolyesters formed are especially useful as encapsulants and as coatings. In many instances the ... | 10/19/2004 |
| 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 initiator and a di-functional polymerization initiator, to achieve rat... | 09/21/2004 |
| 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 |
| 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 than 50% (area % by GPC). This invention also provides methods for synth... | 07/27/2004 |
| 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 one other type of repeat unit selected from the group consisting of ... | 06/08/2004 |
