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| Number | Title | Issue Date |
| 8114951 | Preparation and uses of polyarylates The present invention is directed to polyarylates comprising repeating units having the structure: as well as their preparation and use as cell growth substrates. ... | 02/14/2012 |
| 7585929 | Preparation and uses for polyarylates The present invention is directed to polyarylates comprising repeating units having the structure: as well as their preparation and use as cell growth substrates. ... | 09/08/2009 |
| 7408018 | Elastomeric functional biodegradable copolyester amides and copolyester urethanes The invention provides elastomeric copolyester amides, elastomeric copolyester urethanes, and methods for making the same. The polymers are based on α-amino acids and possess physical, chemical and biodegradation properties that render them suitable for use in the ... | 08/05/2008 |
| 7361727 | Copolymerization of 1,4-dioxan-2-one and a cyclic ester monomer producing thermal stabilized 1,4-dioxan-2-one (co)polymers A polymerization process to derive a thermal-stabilized poly(1,4-dioxan-2-one) and cyclic ester monomer copolymer using a coordination-insertion catalyst/initiator. 1,4-dioxan-2-one and cyclic ester monomer, each containing less than 100-ppm water and having an acid... | 04/22/2008 |
| 7304122 | Elastomeric functional biodegradable copolyester amides and copolyester urethanes The present invention provides elastomeric copolyester amides, elastomeric copolyester urethanes, and methods for making the same. The polymers that are based on α-amino acids and possess suitable physical, chemical and biodegradation properties. The polymers are u... | 12/04/2007 |
| 7273917 | Transparent compositions, methods for the preparation thereof, and articles derived therefrom A reaction product comprises a polyester-polycarbonate comprising a polyester unit and a polycarbonate unit, a polycarbonate polymer, and a transesterification catalyst. The reaction product has a haze of less than 1.7% as measured at a thickness of 3.2 mm according... | 09/25/2007 |
| 7271234 | Polyarylates for drug delivery and tissue engineering Biocompatible polyarylates of tyrosine-derived diphenol compounds and poly(alkylene oxide) dicarboxylic acids, articles formed therefrom and therapeutic uses are disclosed. ... | 09/18/2007 |
| 7208685 | Hardened voyage data recorder A hardened voyage data recorder includes two subsystems: a removable non-volatile memory and a base containing electronics and firmware for communicating with data sensing systems and for accessing the memory. According to the invention, the memory is protected in a... | 04/24/2007 |
| 7195849 | Photosensitive resin compositions A positive photosensitive resin composition comprising: (a) at least one polybenzoxazole precursor polymer having structure I or II; ... | 03/27/2007 |
| 7105106 | Liquid crystalline polymers, processes for their manufacture, and articles thereof Thermotropic liquid crystalline polymers are produced by the reaction of a polyester made from an aromatic dicarboxylic acid and a diol, one or more hydroxycarboxylic acids, a stoichiometric excess of an aromatic diol, and a carboxylic acid anhydride. Also disclosed... | 09/12/2006 |
| 7101652 | Photosensitive resin compositions New photosensitive PBO precursor polymers which contain diazoquinone moieties attached to its backbone and in which all amino end groups are converted into amide groups. The photosensitive formulation based on the disclosed PBO precursor polymers have good imaging a... | 09/05/2006 |
| 7101840 | Polymeric drug formulations A method of forming a polymeric drug formulation in which a water-soluble drug is blended with a water-insoluble tissue-compatible polymer that is miscible in the solid phase with the drug, and with a poly(alkylene oxide), in a solvent system capable of forming a ho... | 09/05/2006 |
| 7084181 | Method for decomposing nonmetallic honeycomb panel, and method for recycling the same The present invention treats crushed pieces of a nonmetallic honeycomb panel together with a process water under high-temperature and high-pressure for a predetermined time so as to separate components. Water or alkali-added water is used as process water. The metho... | 08/01/2006 |
| 7070904 | Polybenzoxazoles from poly-o-hydroxyamide, novel poly-o-hydroxyamides, preparation processes therefor, and their application in microelectronics High-temperature-stable polybenzoxazoles are formed from novel poly-o-hydroxyamides. The novel poly-o-hydroxyamides have low dielectric constants, are suitable for exposure at 248 nm or shorter wavelengths, and have hydroxyl groups at least some of which have been p... | 07/04/2006 |
| 7060741 | Polymer compositions with improved property constancy The present invention provides polymer compositions of special graft rubber polymers, in the production of which are employed rubbers with defined particle diameters obtained by seed polymerization using seed latex particles with defined particle diameters. ... | 06/13/2006 |
| 7056641 | Photosensitive resin compositions A positive photosensitive resin composition of at least one uncapped polybenzoxazole precursor polymer, at least one capped polybenzoxazole precursor polymer, at least one photosensitive agent and at least one solvent, use of such compositions to pattern an image on... | 06/06/2006 |
| 7041778 | Processable thermally stable addition polyimide for composite applications A novel polyimide resin consisting essentially of 3,3′,4,4′-benzophenonetetracarboxylic dianhydride (BTDA), 3,4,3′,4′-biphenyltetracarboxylic dianhydride (BPDA), 2,2 bis (3′,4′-dicarboxy phenyl) hexafluoro propane dianhydride (6FDA), 2-(3,4-dicarboxyphen... | 05/09/2006 |
| 7037637 | Photosensitive polyimide resin precursor composition, optical polyimide obtained from the composition, optical waveguide using the polyimide, and process for producing the optical waveguide A photosensitive polyimide resin precursor composition capable of providing a polyimide resin that is not substantially colored, is transparent and has heat resistance, an optical polyimide resin obtained from the composition, and an optical waveguide using the poly... | 05/02/2006 |
| 7022772 | Optical film comprising polyarylates containing bis-(hydroxyphenyl)-fluorene-ortho-disubstituted bisphenols The present invention refers to a polymeric optical film the polymer of the polymeric optical film consisting essentially of one or more polyarylates having repeating units represented by the general structure: wherein ... | 04/04/2006 |
| 7009026 | Method for producing a liquid crystalline polyester and the liquid crystalline polyester The object is to provide liquid crystalline polyester which gives molded articles without generating acetic acid gas, and a method for producing the liquid crystalline polyester. This object is achieved by a method for producing a liquid crystalline polyester compri... | 03/07/2006 |
| 6960636 | Thermosetting resin compositions containing maleimide and/or vinyl compounds In accordance with the present invention, there are provided novel thermosetting resin compositions which do not require solvent to provide a system having suitable viscosity for convenient handling. Invention compositions have the benefit of undergoing rapid cure. ... | 11/01/2005 |
| 6939659 | Photosensitive resin compositions A positive photosensitive resin composition of at least one uncapped polybenzoxazole precursor polymer, at least one capped polybenzoxazole precursor polymer, at least one photosensitive agent and at least one solvent, use of such compositions to pattern an image on... | 09/06/2005 |
| 6916856 | Thermosetting resin compositions containing maleimide and/or vinyl compounds In accordance with the present invention, there are provided novel thermosetting resin compositions which do not require solvent to provide a system having suitable viscosity for convenient handling. Invention compositions have the benefit of undergoing rapid cure. ... | 07/12/2005 |
| 6784275 | Active energy ray-curable polyimide resin composition Disclosed is an active energy ray-curable polyimide resin composition which comprises a polymerizable polyimide resin (I) having an isocyanurate ring, an alicyclic structure, an imide ring and a (meth)acryloyl group and being capable of patterning with a dilute alka... | 08/31/2004 |
| 6750317 | Material and additive for highly crosslinked chemically and thermally stable polyhydroxyamide polymers Polyhydroxyamides are polymerized to form highly-crosslinked, temperature-stable polymers. The polyhydroxyamides include as their central, parent structure a benzenetricarboxylic acid to which side chains containing a terminal reactive group are attached by an amide... | 06/15/2004 |
| 6555238 | Polyimide film, method of manufacture, and metal interconnect board with polyimide film substrate A polyimide film is manufactured from a random copolymeric, block copolymeric or interpenetrating polymer network-type polyamic acid prepared from pyromellitic dianhydride in combination with 22 to 78 mol % of 4,4'-oxydianiline and 22 to 78 mol % of 3,4'-... | 04/29/2003 |
| 6518390 | Precursor of a heat resistant resin, heat resistant resin, insulating film and semiconductor device A precursor of a polybenzoxazole resin which comprises a crosslinking group in a molecule and has a specific structure, a polybenzoxazole resin obtained from the precursor by the condensation reaction and the crosslinking reaction, an insulating film comp... | 02/11/2003 |
| 6503538 | Elastomeric functional biodegradable copolyester amides and copolyester urethanes The present invention provides elastomeric copolyester amides, elastomeric copolyester urethanes, and methods for making the same. The polymers that are based on -amino acids and possess suitable physical, chemical and biodegradation properties. Th... | 01/07/2003 |
| 6475477 | Radio-opaque polymer biomaterials Iodinated and/or brominated derivatives of aromatic dihydroxy monomers are prepared and polymerized to form radio-opaque polymers. The monomers may also be copolymerized with other dihydroxy monomers. The iodinated and brominated aromatic dihydroxy monome... | 11/05/2002 |
| 6346597 | Method for making polyester carbonates A process for preparing a polyester carbonate is provided. The process comprises the steps of: (I) reacting a diacid with a carbonic acid diester and a catalyst in the presence of a polycarbonate oligomer via melt condensation polymerization to form a pre... | 02/12/2002 |
| 6265521 | Method for preparing polyether polymers of predetermined molecular Polyether polymers such as polyetherimides are prepared by a two-step reaction. The first step is the reaction between an alkali metal salt of a dihydroxy-substituted aromatic hydrocarbon, such as bisphenol A disodium salt, and a substituted aromatic comp... | 07/24/2001 |
| 6235866 | Slurry preparation of bis (halophthalimides) and of polyether polymers Bis(halophthalimides) such as, 3-bis[N-(4-chlorophthalimido)]benzene are prepared in slurry in an organic liquid such as o-dichlorobenzene or anisole, by a reaction at a temperature of at least 150° C. between at least one diamino compound, preferably an... | 05/22/2001 |
| 6153720 | Data and cockpit voice recorder enclosure A crash-survivable enclosure (10) for protecting a data memory unit (45) used in vehicles has a shell (15) with an inner surface (22). The shell (15) defines an interior cavity (26) which contains the data memory unit (45). The enclosure (10) has a heat a... | 11/28/2000 |
| 6120491 | Biodegradable, anionic polymers derived from the amino acid L-tyrosine A polymer with a hydrolytically labile backbone and having the structure: ##STR1## wherein R9 is an alkyl, aryl or alkylaryl group with up to 18 carbon atoms having a pendent carboxylic acid group or the benzyl ester thereof; R12 is ... | 09/19/2000 |
| 5908915 | Copolyetherimides and phase catalyzed method for their preparation Copolyetherimides are prepared by the reaction of an alkali metal salt of a dihydroxyaromatic compound with a bis(substituted phthalimide) and a third compound which may be a substituted aromatic ketone or sulfone or a macrocyclic polycarbonate or polyary... | 06/01/1999 |
| 5907025 | Method for conducting Lewis acid-catalyzed reactions Esterification reactions conducted in the presence of Lewis acids, including the reactions between aromatic carboxylic acids and alcohols and between epoxides and carboxylic acids, may be conducted with the use as the catalyst of a hexaalkylguanidinium or... | 05/25/1999 |
| 5902872 | Resin for coating formation and method for producing the same A resin for coating formation which comprises a polyarylate comprising 2,2-bis(3-methyl-4-hydroxyphenyl)propane units and a divalent carboxylic acid component comprising 10 to 90 mol % of terephthalic acid units and 90 to 10 mol % of isophthalic acid unit... | 05/11/1999 |
| 5889072 | Process for preparing superabsorbing crosslinked polyaspartate salt A process for preparing superabsorbing crosslinked polyaspartate salt by reacting crosslinked polysuccinimide having a weight average molecular weight of at least 20,000 Daltons with neat base or aqueous base wherein the ratio of water to crosslinked poly... | 03/30/1999 |
| 5854372 | Process for the preparation of high molecular weight polycondensates To prepare nitrogen-containing polycondensates, a starting substance which still contains reactive end groups is dispersed in a high-boiling inert solvent, preferably in the presence of a dispersing auxiliary, low molecular weight by-products are distille... | 12/29/1998 |
| 5807965 | Interfacial copolyestercarbonate method using catalyst comprising hexaalkylguanidinium salt and tertiary amine The level of anhydride linkages in copolyestercarbonates is decreased by preparing the copolyestercarbonate interfacially in a two-step method from at least one dihydroxyaromatic compound and at least one dicarboxylic acid. The first step is conducted at ... | 09/15/1998 |
