Phenolic Reactant Contains At Least One Carboxylic Acid Group Or Is Derivative Thereof Patents (Class 528/206)
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Publication number: 20100048855Abstract: Disclosed is an optical lens which can be produced by injection molding on an industrial scale and which has a high refractive index, a low Abbe's number, a low birefringence index, a high transparency and a high glass transition temperature. The optical lens can be produced by injection molding of a polycarbonate resin (preferably having a reduced viscosity of 0.2 dl/g or higher and a glass transition temperature of 120 to 160° C.), wherein the polycarbonate resin is produced by reacting a diol component comprising 99 to 51 mol % of 9,9-bis(4-(2-hydroxyethoxy)phenyl)fluorene and 1 to 49 mol % of bisphenol A with a carbonate diester. It becomes possible to produce an optical lens preferably having a refractive index of 1.60 to 1.65, an Abbe's number of 30 or smaller, a birefringence index of 300 nm or lower and an all light transmittance of 85.0% or higher.Type: ApplicationFiled: June 1, 2007Publication date: February 25, 2010Inventors: Noriyuki Kato, Toshiaki Yamada, Eiji Koshiishi, Shu Yoshida
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Publication number: 20100022709Abstract: A photopolymerizable and photocleavable (P&P) resin monomer is derived from a reactive photoresponsible moiety via various linkages to form photopolymerizable monomers and/or oligomers.Type: ApplicationFiled: September 14, 2009Publication date: January 28, 2010Inventors: Xiaoming Jin, Paul D. Hammesfahr
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Publication number: 20100004422Abstract: Ethers of aromatic acids are produced from halogenated aromatic acids in a reaction mixture containing a copper (I) or copper (II) source and an amino acid ligand that coordinates to copper.Type: ApplicationFiled: December 18, 2007Publication date: January 7, 2010Applicant: E.I. BU PONT DE NEMOURS AND COMPANYInventor: Joachim C. Ritter
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Publication number: 20090203851Abstract: The invention relates to a hydroxy-aromatic resin prepared by bringing together and letting react a hydroxy-aromatic compound of formula (I) and an alkanol hemiacetal compound of formula (II). Formula (I) is: wherein R1, R2, R3, R4 and R5 may be the same or may be different and are H, OH, a C1-C20 alkyl group, or an oligomeric or polymeric system, whereby at least one of the set consisting of R1, R3 and R5 is H. Formula (II) is: wherein R8 is a C1-C12 alkyl group, aryl group, aralkyl group or cycloalkyl group and wherein R12 is H, a C1-C12 alkyl groups aryl group, aralkyl group or cycloalkyl group. The invention further relates to use of the resin in adhesives, laminates, and coatings.Type: ApplicationFiled: June 1, 2007Publication date: August 13, 2009Applicant: DSM IP ASSETS B.V.Inventor: Rudolfus Antonius Theodorus Maria Benthem Van
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Publication number: 20090184294Abstract: Described are antioxidant macromolecules and methods of making and using same.Type: ApplicationFiled: January 5, 2009Publication date: July 23, 2009Inventors: Ashok L. Cholli, Rajesh Kumar
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Publication number: 20090179000Abstract: A method of manufacturing an inkjet printhead, in which a solvent included in a positive photoresist composition or in a non-photosensitive soluble polymer composition which is used to form a sacrificial layer has a different polarity from that of a solvent included in a negative photoresist composition that is used to form at least one of a channel forming layer and a nozzle layer.Type: ApplicationFiled: June 24, 2008Publication date: July 16, 2009Applicants: Samsung Electronics Co., Ltd, Korea Advanced Institute of Science and TechnologyInventors: Jong-jin Park, Su-min Kim, Jin-baek Kim, Yong-ung Ha, Yong-seop Yoon, Byung-ha Park
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Publication number: 20090131599Abstract: Disclosed herein is a method for producing a 2-hydrocarbyl-3,3-bis(4-hydroxyaryl)phthalimidine. The method comprises forming a reaction mixture comprising at least one substituted or unsubstituted phenolphthalein compound, at least one substituted or unsubstituted primary hydrocarbyl amine, and an acid catalyst; and heating the reaction mixture to form 2-hydrocarbyl-3,3-bis(4-hydroxyaryl)phthalimidine. An adduct of the 2-hydrocarbyl-3,3-bis(4-hydroxyaryl) phthalimidine is formed either by using an excess of the primary hydrocarbyl amine in the first heating step, or by isolating crude 2-hydrocarbyl-3,3-bis(4-hydroxyaryl)phthalimidine after the heating step and then reacting with a further amount of the primary hydrocarbyl amine. The 2-hydrocarbyl-3,3-bis(4-hydroxyaryl)phthalimidine has a formula: where R1 is selected from the group consisting of a hydrogen and a hydrocarbyl group, and R2 is selected from the group consisting of a hydrogen, a hydrocarbyl group, and a halogen.Type: ApplicationFiled: November 21, 2008Publication date: May 21, 2009Inventors: Vinod Kumar RAI, Radhakrishna Srinivasarao ARAKALI
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Patent number: 7534852Abstract: An aromatic polyanhydride comprising a repeating unit having the structure is disclosed, wherein Ar and R are selected so that the aromatic polyanhydride hydrolyzes to form a therapeutic salicylate, another non-steroidal anti-inflammatory, an antifibrotic aminobenzoate, or a vasoconstricting phenylethanolamine. Implantable medical devices, such as scaffolding implants for tissue reconstruction, drug delivery systems prepared from the aromatic polyanhydrides, as well as therapeutic dosage forms and treatment methods are also disclosed.Type: GrantFiled: September 6, 2006Date of Patent: May 19, 2009Assignee: Rutgers, The State University of New JerseyInventor: Kathryn E. Uhrich
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Publication number: 20090099267Abstract: Polymers having a main chain having both aromatic units and aliphatic units (with repeating heteroatoms) and a side chain macromonomer are described. Methods of making these polymers using enzymatic synthesis and the applications of these polymers are also described.Type: ApplicationFiled: May 26, 2006Publication date: April 16, 2009Applicant: University of MassachusettsInventors: Rajesh Kumar, Jayant Kumar, Virinder Singh Parmar, Arthur C. Watterson
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Publication number: 20080311065Abstract: The present invention relates to macromonomer compounds possessing antioxidant properties, antioxidant polymers comprising the antioxidant macromonomers as a recurring unit, and methods of inhibiting oxidation in a substance comprising contacting the substance with the antioxidant polymers. In one embodiment, substantially all of the recurring macromonomeric units of the antioxidant polymers comprise an antioxidant moiety. In another embodiment, all of the recurring macromonomer units of the antioxidant polymers comprise an antioxidant moiety. The method of the present invention, yields antioxidant polymers with substantially all of the recurring units comprising an antioxidant moiety. These antioxidant polymers have greater bulk antioxidative properties than previously known.Type: ApplicationFiled: May 28, 2008Publication date: December 18, 2008Inventor: Ashok L. Cholli
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Publication number: 20080287610Abstract: Provided is a copolycarbonate which can meet a wide range of molding conditions as a raw material and which results in providing good optical molded articles. It is a copolycarbonate comprising repetitive units represented by the following Formulas (I) and (II), wherein a content of the repetitive unit represented by Formula (II) described below is 1 to 30 mass %, and a viscosity number is 30 to 71. In the formulas, R1 and R2 represent an alkyl group having 1 to 6 carbon atoms; X represents a single bond, an alkylene group having 1 to 8 carbon atoms, an alkylidene group having 2 to 8 carbon atoms, a cycloalkylene group having 5 to 15 carbon atoms, a cycloalkylidene group having 5 to 15 carbon atoms, —S—, —SO—, —SO2—, —O—, —CO— or the like; R3 and R4 represent an alkyl group having 1 to 3 carbon atoms; Y represents a linear or branched alkylene group having 2 to 15 carbon atoms; a to d each are an integer of 0 to 4; and n is an integer of 2 to 450.Type: ApplicationFiled: February 21, 2005Publication date: November 20, 2008Applicant: Idemitsu Kosan Co., Ltd.Inventors: Yasuhiro Ishikawa, Hiroshi Kawato, Atsushi Sato
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Publication number: 20080257493Abstract: The invention is based on the discovery that certain well-defined compounds derived from pentacyclopentadecane dimethanol are useful components in adhesive formulations. In particular, the invention compounds described herein provide high Tg values and low shrinkage. Compounds of the invention are useful as adhesives for use in the semiconductor packaging industry.Type: ApplicationFiled: April 9, 2008Publication date: October 23, 2008Inventor: Stephen M. Dershem
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Publication number: 20080194790Abstract: The invention relates to a hydroxy-aromatic compound of formula (I): wherein: at least one of the set consisting of R1, R3, and R5 is a group of formula (II); any remaining one or two of the set consisting of R1, R3, and R5 being H, OH, a C1-C12 alkyl group or an oligomeric or polymeric system; R2 and R4 are H, OH, a C1-C12 alkyl group or an oligomeric or polymeric system; formula (II) is the following group: wherein EWG is an electron-withdrawing group.Type: ApplicationFiled: December 1, 2005Publication date: August 14, 2008Inventors: Rudolfus A.T.M. Van Benthem, Renier H.M. Kierkels
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Patent number: 7411019Abstract: The present invention relates to polymer composite materials containing carbon nanotubes, particularly to those containing singled-walled nanotubes. The invention provides a polymer composite comprising one or more base polymers, one or more functionalized m-phenylenevinylene-2,5-disubstituted-p-phenylenevinylene polymers and carbon nanotubes. The invention also relates to functionalized m-phenylenevinylene-2,5-disubstituted-p-phenylenevinylene polymers, particularly to m-phenylenevinylene-2,5-disubstituted-p-phenylenevinylene polymers having side chain functionalization, and more particularly to m-phenylenevinylene-2,5-disubstituted-p-phenylenevinylene polymers having olefin side chains and alkyl epoxy side chains. The invention further relates to methods of making polymer composites comprising carbon nanotubes.Type: GrantFiled: August 25, 2004Date of Patent: August 12, 2008Assignee: Eltron Research, Inc.Inventor: Richard A. Bley
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Publication number: 20080182962Abstract: Hydroxy aromatic acids are produced in high yields and high purity (>95%) from halogenated aromatic acids in a reaction mixture containing a copper source and a ligand that coordinates to copper.Type: ApplicationFiled: March 27, 2008Publication date: July 31, 2008Inventor: Joachim C. RITTER
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Publication number: 20080182961Abstract: Hydroxy aromatic acids are produced in high yields and high purity (>95%) from halogenated aromatic acids in a reaction mixture containing a copper source and a ligand that coordinates to copper.Type: ApplicationFiled: March 27, 2008Publication date: July 31, 2008Inventor: Joachim C. Ritter
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Patent number: 7344657Abstract: An aromatic liquid-crystalline polyester composition is provided, which comprises at least one compound selected from an aliphatic carboxylate aryl ester and an aromatic carboxylic anhydride; an aromatic liquid-crystalline polyester; and a solvent containing at least 30% by weight of a halogen-substituted phenol compound. Using the composition, an aromatic liquid-crystalline polyester film with a low viscosity in melting state can be obtained.Type: GrantFiled: September 23, 2005Date of Patent: March 18, 2008Assignee: Sumitomo Chemical Company, LimitedInventors: Satoshi Okamoto, Shiro Katagiri
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Patent number: 7297755Abstract: Disclosed are oriented, shaped articles such as, for example, film, fibers, bottles, and tubes, with excellent strength, toughness, clarity, chemical resistance, and UV resistance. The articles can be prepared from cycloaliphatic polyesters and from compositions comprising cycloaliphatic polyesters and cycloaliphatic polyester elastomers. The articles may be oriented by stretching in at least one direction and have a modulus which results in a soft feel. Also disclosed are polyester compositions comprising cycloaliphatic polyesters and polyester elastomers.Type: GrantFiled: November 30, 2006Date of Patent: November 20, 2007Assignee: Eastman Chemical CompanyInventors: Marcus David Shelby, Douglas Stephens McWilliams, James Wilson Mercer, Jr., Mark Elliott Tincher
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Patent number: 7271234Abstract: Biocompatible polyarylates of tyrosine-derived diphenol compounds and poly(alkylene oxide) dicarboxylic acids, articles formed therefrom and therapeutic uses are disclosed.Type: GrantFiled: April 24, 2003Date of Patent: September 18, 2007Assignee: Rutgers, The State University of New JerseyInventors: Joachim B. Kohn, Satish Pulapura, Arthur Schwartz, Raman Bahulekar
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Patent number: 7169880Abstract: Disclosed are oriented, shaped articles such as, for example, film, fibers, bottles, and tubes, with excellent strength, toughness, clarity, chemical resistance, and UV resistance. The articles can be prepared from cycloaliphatic polyesters and from compositions comprising cycloaliphatic polyesters and cycloaliphatic polyester elastomers. The articles may be oriented by stretching in at least one direction and have a modulus which results in a soft feel. Also disclosed are polyester compositions comprising cycloaliphatic polyesters and polyester elastomers.Type: GrantFiled: November 19, 2004Date of Patent: January 30, 2007Assignee: Eastman Chemical CompanyInventors: Marcus David Shelby, Douglas Stephens McWilliams, James Wilson Mercer, Jr., Mark Elliott Tincher
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Patent number: 7157525Abstract: The present invention relates to a thermoplastic elastomer resin which has good melt viscosity, melt tension, and thermal resistance, wherein it is prepared by introducing a chain extender and a stabilizer for hydrolysis to a thermoplastic elastomer resin produced through melt polymerization in the presence of hydroxy carboxylic acid compound and subjecting the mixture to reactive extrusion to increase the molecular weight and crosslinking degree of the elastomer resin. The thermoplastic elastomer resin according to the present invention has good properties for automobile parts, particularly constant velocity joint boots and bellows.Type: GrantFiled: December 17, 2003Date of Patent: January 2, 2007Assignee: Samyang CorporationInventors: Sung-Hwan Cho, Sun-Woong Kim, Jun-Hee Lee, Oh-Kwun Son, Byung-Ho Lim
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Patent number: 7122615Abstract: An aromatic polyanhydride having a repeating unit with structure (I) wherein Ar is a substituted or unsubstituted aromatic ring and R is a difunctional organic moiety substituted on each Ar ortho to the anhydride group. Ortho-substituted bis-aromatic dicarboxylic acid anhydride monomers and ortho-substituted bis-aromatic dicarboxylic acid intermediates thereof are also disclosed, as well as implantable medical devices, such as scaffolding implants for tissue reconstruction, drug delivery systems prepared from the aromatic polyanhydrides, as well as therapeutic oral dosage forms and treatment methods.Type: GrantFiled: September 10, 1998Date of Patent: October 17, 2006Assignee: Rutgers, The State University of New JerseyInventor: Kathryn E. Uhrich
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Patent number: 7063892Abstract: An aromatic liquid-crystalline polyester having a small dielectric loss in a wide frequency region is provided. An aromatic liquid-crystalline polyester is provided that can manufacture a film having a small volume expansion by heating. An aromatic liquid-crystalline polyester substantially comprising a repeating structural unit originating in 2-hydroxy-6-naphthoic acid 30 to 80 mol %, a repeating structural unit originating in aromatic diol 35 to 10 mol %, and a repeating structural unit originating in aromatic dicarboxylic acid 35 to 10 mol %.Type: GrantFiled: December 17, 2003Date of Patent: June 20, 2006Assignee: Sumitomo Chemical Company, LimitedInventors: Satoshi Okamoto, Tomoya Hosoda, Shinji Ohtomo
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Patent number: 7014791Abstract: Liquid crystalline polymer having repeat units derived from 4,4?-biphenol, terephthalic acid, 2,6-naphthalenedicarboxylic acid, and 4-hydroxybenzoic acid in a limited compositional range have melting points of 400° C. or more, and are useful for molded articles and for films, particularly for uses where good high temperature resistance is needed.Type: GrantFiled: December 2, 2003Date of Patent: March 21, 2006Assignee: E.I. du Pont de Nemours and CompanyInventors: Marion G. Waggoner, Michael Robert Samuels
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Patent number: 7014921Abstract: An aromatic liquid-crystalline polyester with good moldability into a film is provided. The resulting film has small dielectric loss. The polyester comprises repeating units represented by formulae (I), (II), (III) and (IV), and the molar amounts of repeating units (I)–(IV) are 40–74.8%, 12.5–30%, 12.5–30% and 0.2–15%, respectively, wherein the molecular amounts of repeating units (III) and (IV) satisfy the relation of (III)/[(III)+(IV)]?0.5.Type: GrantFiled: November 3, 2004Date of Patent: March 21, 2006Assignee: Sumitomo Chemical Company, LimitedInventors: Satoshi Okamoto, Tomoya Hosoda
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Patent number: 6984712Abstract: The present invention provides a liquid-crystalline polyester resin which comprises monomer units derived from 2-hydroxy-3-naphthoic acid and/or 2-hydroxynaphthalene-3,6-dicarboxylic acid in an amount of 1-5000 mmol % based on the total monomer components of the resin and an alkaline metal compound in an amount of 10-3000 ppm as alkaline metal based on the total monomer components of the resin. The liquid-crystalline polyester resin of the present invention has good colorability, improved heat resistance and good mechanical properties.Type: GrantFiled: November 25, 2002Date of Patent: January 10, 2006Assignee: Kabushiki Kaisha Ueno Seiyaku Oyo KenkyujoInventors: Ryuzo Ueno, Masaya Kitayama, Kiichi Kometani, Hiroyuki Kato, Kazunori Ueda
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Patent number: 6890988Abstract: The present invention provides an aromatic polyester which is obtained by condensation polymerization reaction of terephthalic acid, 2,6-naphthalenedicarboxylic acid and acylated product obtained by acylation of parahydroxybenzoic acid and hydroquinone with fatty acid anhydride, wherein said aromatic polyester satisfy the following conditions (A) to (D), and the acylation and/or the condensation polymerization reaction are conducted in the presence of heterocyclic organic compound containing at least two nitrogen atoms: (A): Number of moles of a monomer unit derived from parahydroxybenzoic acid (UNIT (1)) is 54-62 moles per 100 moles of UNIT (1), a monomer unit derived from hydroquinone (UNIT (2)), a monomer unit derived from terephthalic acid (UNIT (3)) and a monomer unit derived from 2,6-naphthalenedicarboxylic acid (UNIT (4)) in total; (B): Number of moles of UNIT (2) is 19-23 moles per 100 moles of UNIT (1), UNIT (2), UNIT (3) and UNIT (4) in total; (C): The molar ratio of UNIT (3) and UNIT (4), which isType: GrantFiled: February 25, 2003Date of Patent: May 10, 2005Assignee: Sumitomo Chemical Company, LimitedInventors: Tomoya Hosoda, Hiroshi Harada, Satoshi Okamoto
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Patent number: 6774203Abstract: The present invention provides a method for producing a liquid crystalline polyester which is produced from an aromatic carboxylic acid, an aromatic hydroxycarboxylic acid, an aromatic diol and/or an aromatic hydroxylamine, including a polymerization step (1) for producing a prepolymer of the liquid crystalline polyester and a solid-state polymerization step (2) for elevating the polymerization degree of the resultant prepolymer, the number of aromatic ring terminal groups of the prepolymer satisfying the following equation (i): [(the number of aromatic ring terminal groups)/[(the number of carboxylic terminal groups)+(the number of aromatic ring terminal groups)]]×100≧7(%) (i). According to the invention, all-aromatic type liquid crystalline polyesters can be produced within a short time and at low cost.Type: GrantFiled: May 17, 2002Date of Patent: August 10, 2004Assignee: Polyplastics Co., Ltd.Inventor: Yasuyuki Fukute
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Patent number: 6762277Abstract: A method of manufacturing a new N-carboxyamino acid anhydride and polyamino acid using a simple process operation. The method for manufacturing N-carboxyamino acid anhydride comprising reacting &agr;-amino acid with di-tert-butyltricarbonate. The method for manufacturing polyamino acid comprising decarboxylating the N-carboxyamino acid anhydride obtained by reacting &agr;-amino acid with di-tert-butyltricarbonate.Type: GrantFiled: April 26, 2002Date of Patent: July 13, 2004Assignee: JSR CorporationInventors: Hiroto Kudoh, Takeshi Endoh
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Patent number: 6632916Abstract: A composite type conductive polymer having a phenylene vinylene backbone with a condensed hydrocarbon ring system introduced into the backbone to form a bend in a linear structure of the phenylene vinylene backbone.Type: GrantFiled: June 13, 2002Date of Patent: October 14, 2003Assignee: Toyoda Gosei Co., Ltd.Inventors: Makoto Sato, Kuniyoshi Kondo, Mamoru Kato, Hiromitsu Tanaka, Arimitsu Usuki
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Patent number: 6627303Abstract: Articles made from a thermoplastic resin composition comprising a high modulus fiber and a resorcinol polyester or resorcinol polyester carbonate resin showing high strength and stiffness along with surprisingly good retention of gloss and color when exposed to weathering.Type: GrantFiled: January 17, 2003Date of Patent: September 30, 2003Assignee: General Electric CompanyInventors: Robert R. Gallucci, Xiangyang Li, Paul D. Sybert
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Patent number: 6607795Abstract: Herein is disclosed an oxygen scavenging composition, comprising (i) an oxygen scavenging polymer comprising units having structure I: wherein R1 and R2 are independently selected from the group consisting of —O—, —NCO—, and —NR—, wherein R is selected from the group consisting of —H and —C1-C6 alkyls; (ii) a transition metal oxidation catalyst; and (iii) an energy-absorbing compound selected from the group consisting of microwave reactive materials and photoinitiators having a wavelength of maximum absorption of electromagnetic radiation from about 200 nm to about 750 nm. The oxygen scavenging composition can be used to form an oxygen scavenging packaging article.Type: GrantFiled: December 19, 2001Date of Patent: August 19, 2003Assignee: Chevron Phillips Chemical Company LPInventors: Hu Yang, Ta Yen Ching, Peter Kwan
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Patent number: 6552133Abstract: Carboxy-functionalized polyphenylene ethers containing structural units with a carboxyalkyl group in the 2-position are prepared by redistribution of a polyphenylene ether with a 2-carboxyalkylphenol such as 2-(3-carboxypropyl)phenol (melilotic acid), or by oxidative coupling of a suitable phenol with such a 2-carboxyalkylphenol. The products form compatibilizing copolymers with polymers containing carboxylic acid-reactive functional groups, such as polyesters, polyamides and epoxy resins.Type: GrantFiled: May 31, 2001Date of Patent: April 22, 2003Assignee: General Electric CompanyInventors: Gary William Yeager, Yiqun Pan
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Patent number: 6525120Abstract: A polymer composition having satisfactory processing stability is provided which comprises a polymer; a bisphenol monoester represented by the Formula (1): wherein R1 represents hydrogen, alkyl or phenyl group; R2 and R3 each independently represents alkyl group; and R4 and R5 each independently represents hydrogen or methyl group; and a bisphenol diester represented by Formula (2) wherein R6 represents hydrogen, alkyl or phenyl group; R7 and R8each independently represents alkyl group; and R9 and R10 each independently represents hydrogen or methyl group in which amount of the compound of formula (2) is 0.001 to 5 parts by weight based on 100 parts by weight of the total amount of the compounds of formulae (1) and (2).Type: GrantFiled: May 29, 2001Date of Patent: February 25, 2003Assignee: Sumitomo Chemical Co., Ltd.Inventor: Kanako Fukuda
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Publication number: 20020188095Abstract: A method of manufacturing a new N-carboxyamino acid anhydride and polyamino acid using a simple process operation.Type: ApplicationFiled: April 26, 2002Publication date: December 12, 2002Applicant: JSR CORPORATIONInventors: Hiroto Kudoh, Takeshi Endoh
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Patent number: 6482915Abstract: The invention provides a method for producing a thermotropic liquid crystalline polymer of high quality at high yield and in short polymerization time, which method includes polymerizing staring monomers I, II, III, and IV, i.e., (I) an aromatic hydroxycarboxylic acid, etc.; (II) an aromatic dicarboxylic acid and an alicyclic dicarboxylic acid; (III) an aromatic diol, an alicyclic diol, an aliphatic diol, etc.; and (IV) an aromatic hydroxylamine, an aromatic diamine, etc. in the presence of an acylating agent, wherein the starting materials are charged so as to satisfy the following equations (1) to (4): 0.0015≦((A)−(B))/((A)+(B))≦0.006 (1); 1.01≦(D)/(C)≦1.08 (2); 0≦(E)≦40 (3); and (D)/(C)≧−0.002 ×(E)+1.Type: GrantFiled: July 19, 2001Date of Patent: November 19, 2002Assignee: Polyplastics Co., Ltd.Inventor: Toshiaki Yokota
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Patent number: 6475477Abstract: 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 monomers can be employed as radio-opacifying, biocompatible non-toxic additives for other polymeric biomaterials. Radio-opaque medical implants and drug delivery devices for implantation prepared from the polymers of the present invention are also disclosed.Type: GrantFiled: July 3, 2000Date of Patent: November 5, 2002Assignee: Rutgers, The State UniversityInventors: Joachim B. Kohn, Durgadas Bolikal, Sanyog M. Pendharkar
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Publication number: 20020151668Abstract: A multi-dimensional copolymer array of a plurality of copolymers, polymerized from at least two independently variable sets of monomers, wherein the polymerization is characterized by:Type: ApplicationFiled: April 13, 1999Publication date: October 17, 2002Inventors: KEN JAMES, BROCCHINI STEPHEN, VARAWUT TANGPASUTHADOL, JOACHIM KOHN
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Publication number: 20020077447Abstract: The present invention provides a curable polyphenylene ether (PPE) resin, a composition made therefrom, and a process for preparing the resin. The process involves introducing a vinyl group-containing functional group to the terminal end of PPE by modifying the hydroxy and ester groups on the terminal end. Thus, a curable thermosetting PPE resin including a vinyl group on the terminal end can be obtained. Since the dehydrogenation of side chain methyl using n-BuLi is not conducted in the process of the present invention, the process is much easier, and the cost can be decreased.Type: ApplicationFiled: May 3, 2001Publication date: June 20, 2002Applicant: Industrial Technology Research InstituteInventors: Gue-Wuu Hwang, Chien-Ting Lin, Chingchen S. Chiu
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Patent number: 6388045Abstract: Provided is a liquid crystalline polymer which is obtained by copolymerizing at least one polyfunctional aromatic monomer selected from the group consisting of the compounds represented by the formulae (I), (II) and (III) below with at least one polymerizable monomer. The liquid crystalline polymer of the present invention is excellent in heat resistance, molding properties, flow properties and mechanical properties, especially it provide molded article with improved weld strength.Type: GrantFiled: January 8, 2001Date of Patent: May 14, 2002Assignee: Kabushiki Kaisha Ueno Seiyaku Oyo KenkyujoInventors: Ryuzo Ueno, Masaya Kitayama, Kiichi Kometani, Taihei Hamasaki, Motoki Asahara
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Patent number: 6383636Abstract: There is disclosed a (2,5-disubstituted-1,4-phenylene oxide) block copolymer which comprises one or more block structural units represented by formula (I) and at least one particular divalent structural unit in a molecule. There is also disclosed a (2,5-disubstituted-1,4-phenylene oxide) graft polymer which comprises one or more structural units of formula (IV), or three or more of structural unit of formula (IV) and particular divalent structural unit, in a molecule. (wherein R1 represents an unsubstituted or substituted hydrocarbon group, and the two R1s may be the same or different; a represents a number average degree of polymerization and is 5 or more; R4 represents a trifunctional unsubstituted or substituted hydrocarbon group; U represents —CO—, —OCO—, or —NHCO—; and f is 1 or 0.Type: GrantFiled: March 28, 2001Date of Patent: May 7, 2002Assignees: Director-General of National Institute of Advanced Industrial Science and Technology, Ministry of Economy, Trade and Industry, Japan Chemical Innovation InstituteInventors: Hideyuki Higashimura, Shuhei Namekawa, Shiro Kobayashi
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Publication number: 20020051910Abstract: A lithium battery employs for a battery separator and a battery insulating packing and the like a battery polymeric material comprising repeating units wherein p-phenylene is combined with one type of group selected from the group composed of oxygen, a methylene group, an isopropylidene group, a carbonyl group, a carbonyldioxy group, a carboxylic acid anhydride group, an amide group, an ureylene group and a sulfonyl group, or a polymeric material comprising at least two types of repeating units wherein p-phenylene is combined with one type of group selected from the group composed of oxygen, a methylene group, an isopropylidene group, a carbonyl group, a carbonyldioxy group, a carboxylic acid anhydride group, an amide group, an ureylene group, a sulfonyl group, sulfur and a carbonyloxy group.Type: ApplicationFiled: August 23, 2001Publication date: May 2, 2002Applicant: Sanyo Electric Co., Ltd.Inventors: Seiji Yoshimura, Hiroshi Nakajima, Maruo Kamino, Nobuhiro Nishiguchi, Masahiro Imanishi
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Patent number: 6376076Abstract: Provided are a aromatic liquid crystalline polyester resin having improved low temperature processability, a film having excellent gas barrier property. The aromatic liquid crystalline polyester resin is obtained from an aromatic hydroxycarboxylic acid, an aromatic dicarboxylic acid and an aromatic diol, by optimizing formulation ratio of the above-described three components. The aromatic liquid crystalline polyester resin comprises an aromatic hydroxycarboxylic acid unit, an aromatic dicarboxylic acid unit and an aromatic diol unit, as repeating units, wherein the repeating unit (A) as an aromatic hydroxycarboxylic acid unit, is contained in an amount of 30 mol % or more based on the total amount of repeating units, and the polyester has a logarithmic viscosity of 1.5 dl/g or more, a flow temperature of 300° C. or less, and a melt tension measured at a temperature higher than the flow temperature by 25° C. or more of 1.Type: GrantFiled: June 18, 2001Date of Patent: April 23, 2002Assignee: Sumitomo Chemical Company, LimitedInventors: Yoshitaka Ohbe, Kazunori Akiyoshi, Takanari Yamaguchi
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Publication number: 20020028906Abstract: Disclosed is a select class of liquid crystalline polyesters and molding compositions comprising the polyesters and glass fiber. The liquid crystalline polyesters consist essentially of (1) diacid residues consisting essentially of (i) cyclohexanedicarboxylic acid residues and (ii) other diacid residues selected from terephthalic acid residues, 2,6-naphthalene-dicarboxylic acid residues, or a mixture thereof; (2) diol residues consisting essentially of hydroquinone residues, 4,4′-biphenol residues or a mixture thereof; and, optionally, (3) p-hydroxybenzoic acid residues. In the above definition, the moles of diol residues are equal to the moles of diacid residues and the total of the (1), (2) and (3) mole percentages is equal to 100. The liquid crystalline polyesters have melting points determined by differential scanning calorimetry equal to or less than 360° C.Type: ApplicationFiled: May 14, 2001Publication date: March 7, 2002Inventors: Timothy Edward Long, William Ronald Darnell
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Publication number: 20020028905Abstract: The invention provides a method for producing a thermotropic liquid crystalline polymer of high quality at high yield and in short polymerization time, which method includes polymerizing staring monomers I, II, III, and IV, i.e., (I) an aromatic hydroxycarboxylic acid, etc.; (II) an aromatic dicarboxylic acid and an alicyclic dicarboxylic acid; (III) an aromatic diol, an alicyclic diol, an aliphatic diol, etc.; and (IV) an aromatic hydroxylamine, an aromatic diamine, etc.Type: ApplicationFiled: July 19, 2001Publication date: March 7, 2002Applicant: POLYPLASTICS CO., LTD.Inventor: Toshiaki Yokota
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Patent number: 6344516Abstract: A curable resin composition, which comprises a resin formed, in the presence of a transition metal complex, by polymerizing an oxidative-polymerizable compound that contains a phenol-compound-containing vegetable oil. A method for producing a curable resin composition comprising a resin formed, in the presence of a catalyst, by polymerizing an oxidative-polymerizable compound that contains a phenol-compound-containing vegetable oil, wherein the catalyst is a transition metal complex. The curable resin composition is useful as a raw material for a urushi-like coating, a friction material, a brake lining material, a brake pad material, a material for forming a coating film, a compound for a recording material, a raw material for an ink, a raw material for a coating,.a raw material for a adhesive, a raw material for an epoxy resin, a raw material for a photoresist or antioxidant, and a starting material for a functional polymer.Type: GrantFiled: February 28, 2001Date of Patent: February 5, 2002Assignees: National Institute of Advanced Industrial Science and Technology, Japan Chemical Innovation InstituteInventors: Ryohei Ikeda, Shiro Kobayashi, Hiroshi Uyama
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Patent number: 6333393Abstract: An aromatic polyester having the following structural units, (1), (2), (3), (4) and (5), wherein the amount of the structural unit (1) is 30 to 50% based on the total of the all structural units, (2)/(3) is more than 2.78 and smaller than 4, (4)/(5) is more than 1.0 and smaller than 1.5, and {(2)+(3)}/{(4)+(5)} is from 0.9 to 1.1: wherein Ra, Rb, Rc, Rd, Re and Rf each independently represents a lower alkyl group, lower alkoxy group, phenoxy group, phenyl group or halogen atom, and l, m, n, o, p and q each independently represents an integer from 0 to 3, is provided; and the aromatic polyester has excellent molding property and a molded article made from this polyester has excellent soldering temperature resistance and rigidity.Type: GrantFiled: July 27, 2000Date of Patent: December 25, 2001Assignee: Sumitomo Chemical Company, LimitedInventor: Hiroshi Harada
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Publication number: 20010034430Abstract: Carboxy-functionalized polyphenylene ethers containing structural units with a carboxyalkyl group in the 2-position are prepared by redistribution of a polyphenylene ether with a 2-carboxyalkylphenol such as 2-(3-carboxypropyl)phenol (melilotic acid), or by oxidative coupling of a suitable phenol with such a 2-carboxyalkylphenol. The products form compatibilizing copolymers with polymers containing carboxylic acid-reactive functional groups, such as polyesters, polyamides and epoxy resins.Type: ApplicationFiled: May 31, 2001Publication date: October 25, 2001Inventors: Gary William Yeager, Yiqun Pan
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Patent number: 6296930Abstract: Provided are a aromatic liquid crystalline polyester resin having improved low temperature processability, a film having excellent gas barrier property. The aromatic liquid crystalline polyester resin is obtained from an aromatic hydroxycarboxylic acid, an aromatic dicarboxylic acid and an aromatic diol, by optimizing formulation ratio of the above-described three components. The aromatic liquid crystalline polyester resin comprises an aromatic hydroxycarboxylic acid unit, an aromatic dicarboxylic acid unit and an aromatic diol unit, as repeating units, wherein the repeating unit (A) as an aromatic hydroxycarboxylic acid unit, is contained in an amount of 30 mol % or more based on the total amount of repeating units, and the polyester has a logarithmic viscosity of 1.5 dl/g or more, a flow temperature of 300° C. or less, and a melt tension measured at a temperature higher than the flow temperature by 25° C. or more of 1.Type: GrantFiled: June 8, 1999Date of Patent: October 2, 2001Assignee: Sumitomo Chemical Company, LimitedInventors: Yoshitaka Ohbe, Kazunori Akiyoshi, Takanari Yamaguchi
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Patent number: 6296950Abstract: A method of producing a thermotropic liquid crystalline copolyester having an extremely small amount of out-gases comprising the steps of: (1) charging in a reactor 5-100 mol % of aromatic hydroxycarboxylic acid, 0-47.5 mol % of aromatic dicarboxylic acid and 0-47.5 mol % of aromatic diol, so that the sum of mol % of each material is 100 mol % and the molt of aromatic dicarboxylic acid and that of aromatic diol are substantially equal; (2) adding acetic anhydride of an amount which satisfies the formula, (B-C)/A≧1.04, “A” representing the total molar number of the hydroxy group in a reaction system, “B” representing the molar number of acetic anhydride to be added, and “C” representing the molar number of water present in the reaction system prior to addition of acetic anhydride; (3) acetylation; (4) melt polymerization; and (5) solid-phase polymerization.Type: GrantFiled: March 15, 2001Date of Patent: October 2, 2001Assignee: Nippon Petrochemical Co., LTDInventors: Satoshi Murouchi, Yoshikuni Yamada, Toshitaka Kobayashi