Two Or More Phenolic Reactants Patents (Class 528/193)
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Patent number: 7740941Abstract: This invention relates to thermoplastic article having one or more decorative materials embedded therein which is obtained by applying heat and pressure to one or more laminates wherein at least one of said laminates comprises, in order, (1) an upper sheet material; (2) one or more decorative materials; and (3) a lower sheet material; wherein the upper and lower sheet materials are formed from a polyester/aromatic polycarbonate blend wherein the thermoplastic article comprises at least one polyester composition comprising at least one polyester which comprises terephthalic acid and 2,2,4,4-tetramethyl-1,3-cyclobutanediol.Type: GrantFiled: January 29, 2009Date of Patent: June 22, 2010Assignee: Eastman Chemical CompanyInventors: Emmett Dudley Crawford, David Scott Porter, Gary Wayne Connell
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Patent number: 7737244Abstract: The present invention relates to a process for preparing polyarylate, and more specifically, to a process for preparing polyarylate by interfacial polymerization of a bivalent phenol compound and an aromatic dicarboxylic acid or a halide thereof, which comprises mixing a cationic catalyst for the phase transition and a nonionic surfactant in a predetermined ratio, to further increase the yield of polyarylate, as compared with the case of using each of the nonionic surfactant and the cationic catalyst for the phase transition alone.Type: GrantFiled: February 16, 2007Date of Patent: June 15, 2010Assignee: LG Chem, Ltd.Inventors: Dae-Woo Nam, Dong-Ryul Kim, Hyo-Sun Lee, Boong-Goon Jeong, Sang-Uk Ryu, Hee-Jung Kim, Ju-Eun Cha
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Patent number: 7704605Abstract: This invention relates to thermoplastic article having one or more decorative materials embedded therein which is obtained by applying heat and pressure to one or more laminates wherein at least one of said laminates comprises, in order, (1) an upper sheet material; (2) one or more decorative materials; and (3) a lower sheet material; wherein the upper and lower sheet materials are formed from a polyester/aromatic polycarbonate blend wherein the thermoplastic article comprises at least one polyester composition comprising at least one polyester which comprises terephthalic acid and 2,2,4,4-tetramethyl-1,3-cyclobutanediol.Type: GrantFiled: February 4, 2009Date of Patent: April 27, 2010Assignee: Eastman Chemical CompanyInventors: Emmett Dudley Crawford, David Scott Porter, Gary Wayne Connell
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Patent number: 7674878Abstract: Disclosed is a method of producing a non-adhering granulate above the glass-transition temperature comprising a polyester material, in which the polyester material is introduced into a cooling water flow as a melt and is separated from the cooling water after passing through a cooling stretch. The dwell time of the polyester material in the cooling stretch is 0.2-5 sec, and the cooling water has a pressure of at least 2 bar along the cooling stretch. For the thus obtained granulate, post-crystallization is not required, at least not in every case. It has been shown that the granulate does not adhere, even without post-crystallization and mechanical movement if no additional external input of energy takes place. Even during heating under pressure, no adhesion could be observed.Type: GrantFiled: March 13, 2007Date of Patent: March 9, 2010Assignee: Uhde Inventa-Fischer AGInventors: Kurt Hanimann, Werner Stibal
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Patent number: 7671164Abstract: A method of making a polycarbonate is described. The method comprises melt reacting an ester-substituted diaryl carbonate and a multifunctional compound of the formula: in the presence of catalyst to form an oligomer comprising less than 2,000 ppm of an ester-linked terminal group, and melt polymerizing the oligomer to form a polycarbonate. Use of specific reaction conditions produces a polycarbonate having an Mw of greater than or equal to 25,000 g/mol as determined by gel-permeation chromatography relative to polystyrene standards. Polycarbonates comprising units derived from the multifunctional compound, including homopolycarbonates, aliphatic copolycarbonates further comprising units derived from an aromatic dihydroxy compound, and aliphatic polycarbonate-polyesters, are also disclosed, as are a thermoplastic composition and an article including the disclosed polycarbonates.Type: GrantFiled: May 21, 2008Date of Patent: March 2, 2010Assignee: SABIC Innovative Plastics IP B.V.Inventors: Hans-Peter Brack, Maarten Antoon Jan Campman, Jorge Garcia Agudo, Jan Henk Kamps, Hans Looij, Fernando Olmedo Fernandez, Dennis James Patrick Maria Willemse
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Publication number: 20090212451Abstract: The invention relates to a method of preparing wholly aromatic polyester including: mixing monomers, introducing the mixed monomers into a reactor having a rectangular or trapezoidal plate type stirring impeller, and polymerizing the introduced monomers through esterification with a power per unit volume of 10˜60 kW/m3, a length (L) to diameter (D) ratio of the stirring impeller is 1˜3:1, and a distance between the bottom of the reactor and a lower portion of the stirring impeller is 1/100˜ 1/15 times of the diameter (D); b) pulverizing the obtained polymer; and c) solid state polymerizing the pulverized polymer.Type: ApplicationFiled: November 1, 2006Publication date: August 27, 2009Applicant: SAMSUNG FINE CHEMICALS CO., LTD.Inventors: Mahn Jong Kim, Jong Hwa Yun, Youn Eung Lee, Tae Jun Ok, Sun Hwa Jang, Hyun Min Kim
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Patent number: 7541417Abstract: A process comprising the steps of dissolving a dihydric phenol in a solvent to form a solution A, contacting the solution A with an adsorbent material selected from the group consisting of metal oxides, modified metal oxides, activated carbons, and clays, filtering the adsorbent material to form a solution B, adding an anti-solvent to the solution B to form a solution C, and distilling the solution C, wherein the dihydric phenol is represented by Formula (I): wherein R is a hydrogen atom or an aliphatic functionality having 1 to 6 carbon atoms and n is an integer having a value of 1 to 4.Type: GrantFiled: March 30, 2006Date of Patent: June 2, 2009Assignee: SABIC Innovative Plastics IP B.V.Inventors: Sunil Ashtekar, Mahesh Malusare, Gurram Kishan, Pushpa Narayanan, Ramanarayanan GV, Arun Dixit, Pradeep Nadkarni, Jan Plen Lens
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Patent number: 7528210Abstract: A process comprising the steps of dissolving a dihydric phenol in a solvent to form a solution A; contacting the solution A with a zeolite; filtering the zeolite to form a solution B; adding an anti-solvent to the solution B to form a solution C; and distilling the solution C; wherein the dihydric phenol is represented by Formula (I): wherein R is a hydrogen atom or an aliphatic functionality having 1 to 6 carbon atoms and n is an integer having a value 1 to 4.Type: GrantFiled: March 30, 2006Date of Patent: May 5, 2009Assignee: SABIC Innovative Plastics IP B.V.Inventors: Guohua Xiu, Tong Sun, Jan Plen Lens, Sunil Ashtekar, Mahesh Malusare, Gurram Kishan, Pushpa Narayanan
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Patent number: 7524562Abstract: The invention includes embodiments that relate to a method of improving the abrasion resistance of a plastic article. The method comprises: (a) providing a composition comprising at least one e-beam active thermoplastic polymeric material; (b) forming an article from the composition of step (a); and (c) exposing the article formed in step (b) to an electron beam source. The invention also includes embodiments that relate to an article comprising an abrasion resistant surface.Type: GrantFiled: October 18, 2005Date of Patent: April 28, 2009Assignee: Sabic Innovative Plastics IP B.V.Inventors: Ryo Tamaki, Steven Thomas Rice, Hieu Minh Duong, Xian-Zhi Zhou, Gary Charles Davis, Elliott West Shanklin
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Publication number: 20090105443Abstract: A method of making a polycarbonate is described. The method comprises melt reacting an ester-substituted diaryl carbonate and a multifunctional compound of the formula: in the presence of catalyst to form an oligomer comprising less than 2,000 ppm of an ester-linked terminal group, and melt polymerizing the oligomer to form a polycarbonate. Use of specific reaction conditions produces a polycarbonate having an Mw of greater than or equal to 25,000 g/mol as determined by gel-permeation chromatography relative to polystyrene standards. Polycarbonates comprising units derived from the multifunctional compound, including homopolycarbonates, aliphatic copolycarbonates further comprising units derived from an aromatic dihydroxy compound, and aliphatic polycarbonate-polyesters, are also disclosed, as are a thermoplastic composition and an article including the disclosed polycarbonates.Type: ApplicationFiled: May 21, 2008Publication date: April 23, 2009Inventors: Hans-Peter BRACK, Maarten Antoon Jan CAMPMAN, Jorge GARCIA AGUDO, Jan Henk KAMPS, Hans LOOIJ, Fernando OLMEDO FERNANDEZ, Dennis James Patrick Maria WILLEMSE
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Patent number: 7511114Abstract: Colored aromatic polycarbonate resin compositions are prepared by dispersing a colorant (b) selected from phthalocyanine-based compounds, anthraquinone-based compounds and ultramarine blue in a polyalkyleneglycol compound (c) having a number-average molecular weight of 62 to 4000 of formula (2): HO—[—CHR1—CHR2—]m—OH??(2) where R1, R2, R3 and R4 are independently hydrogen atoms or alkyl groups, and m is not less than 1. The dispersion is added to an aromatic polycarbonate resin (a) kept in a molten state which has a viscosity-average molecular weight of not less than 16000 and contains a branched constitutional unit of formula (1): in an amount of 0.3 to 0.95 mol % where X is 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, or a divalent connecting group —O—, —S—, —CO—, —SO— and —SO2—.Type: GrantFiled: November 28, 2006Date of Patent: March 31, 2009Assignee: Mitsubishi Chemical CorporationInventors: Masaaki Miyamoto, Takao Tayama, Kiyoji Kuma, Eiji Fujimoto
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Patent number: 7510768Abstract: This invention relates to thermoplastic article having one or more decorative materials embedded therein which is obtained by applying heat and pressure to one or more laminates wherein at least one of said laminates comprises, in order, (1) an upper sheet material; (2) one or more decorative materials; and (3) a lower sheet material; wherein the upper and lower sheet materials are formed from a polyester/aromatic polycarbonate blend wherein the thermoplastic article comprises at least one polyester composition comprising at least one polyester which comprises terephthalic acid and 2,2,4,4-tetramethyl-1,3-cyclobutanediol.Type: GrantFiled: March 28, 2006Date of Patent: March 31, 2009Assignee: Eastman Chemical CompanyInventors: Emmett Dudley Crawford, David Scott Porter, Gary Wayne Connell
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Publication number: 20090076241Abstract: Synthesis methods for creating polymeric compounds comprising dihydroxyphenyl derivatives (DHPD), or DHPp i.e. polymers modified with DHPD, with desired surface active effects are described. The polymer backbone of DHPp has structural or performance features that can be tailored to control physical properties of DHPp, allowing it to be useful for different applications i.e. tissue adhesives or sealants, adhesion promoting coatings, and antifouling coatings.Type: ApplicationFiled: September 28, 2008Publication date: March 19, 2009Inventor: Bruce P. Lee
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Publication number: 20090042294Abstract: A dihydroxyphenyl cross-linked macromolecular network is provided that is useful in artificial tissue and tissue engineering applications, particularly to provide a synthetic macromolecular network for a wide variety of tissue types. In particular, artificial or synthetic cartilage, vocal cord material, vitreous material, soft tissue material and mitral valve material are described. In an embodiment, the network is composed of tyramine-substituted and cross-linked hyaluronan molecules, wherein cross-linking is achieved via peroxidase-mediated dityramine-linkages that can be performed in vivo. The dityramine bonds provide a stable, coherent hyaluronan-based hydrogel with desired physical properties.Type: ApplicationFiled: September 15, 2008Publication date: February 12, 2009Applicant: The Cleveland Clinic FoundationInventors: Anthony Calabro, Lee Akst, Daniel Alam, James Chan, Aniq B. Darr, Kiyotaka Fukamachi, Richard A. Gross, David Haynes, Keiji Kamohara, Daniel P. Knott, Hilel Lewis, Alex Melamud, Anthony Miniaci, Marshall Strome
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Patent number: 7399799Abstract: Disclosed is a flame-retardant polyester polymer dyeable with a cationic dye, a method of producing the same, a copolyester fiber using the same, and fiber products using the copolyester fiber. In the method, after a dimethyl isophthalate component containing metal sulfonate of Formula 2 separately reacts with ethylene glycol so that an extent of the ester interchange reaction is 95% or more to synthesize bis(hydroxyethyl terephthalate) containing metal sulfonate of Formula 3, bis(hydroxyethyl terephthalate) is fed so that a content of bis(hydroxyethyl terephthalate) is 0.01-5 mol % based on a diacid component in a polymer in a course of producing polyester, a phosphorus-based flame retardant of Formula 1 is fed so that a content of a phosphorus atom is 500-40000 ppm based on the polymer, and the mixture is copolymerized. The polyester polymer is dyeable with cationic dye while having excellent flame retardancy, and can be melt-spun like other polymers capable of being melt-spun.Type: GrantFiled: September 30, 2004Date of Patent: July 15, 2008Assignee: Hyosung CorporationInventors: Seung-Cheol Yang, Eung-Soo Kim, Yang-Kuk Son, Ik-Hyeon Kwon
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Patent number: 7393467Abstract: Provided is a liquid-crystalline polyester with good properties obtainable by subjecting a prepolymer consisting of the repeating units represented by formulae (I), (II), (III) and (IV): to heat treatment in a substantially solid state.Type: GrantFiled: January 30, 2006Date of Patent: July 1, 2008Assignee: Kabushiki Kaisha Ueno Seiyaku Oyo KenkyujoInventors: Motoki Asahara, Tetsuhide Sawada, Hiroyuki Kato
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Patent number: 7351786Abstract: Disclosed are a polyhydroxyalkanoate, containing in a polymer molecule thereof a monomer unit represented by the following general formula (1): (wherein R1 represents a substituent to a cyclohexyl group, where R1 is a H atom, a CN group, a NO2 group, a halogen atom, a CH3 group, a C2H5 group, a C3H7 group, a CF3 group, a C2F5 group, or a C3F7 group; and if there are two or more monomer units, R1 may be different from every monomer unit), and a binder resin using the polyhydroxyalkanoate. The binder resin is biodegradable, so that the binder resin is more responsible for the conservation of natural environment or the like. Also, the binder resin facilitates deinking in the deinking process using an alkali, so that the binder resin accelerates recycling of used copying paper. Furthermore, the binder resin satisfies the desired characteristics of a toner for developing an electrostatic charge image.Type: GrantFiled: October 22, 2003Date of Patent: April 1, 2008Assignee: Canon Kabushiki KaishaInventors: Tsutomu Honma, Tetsuya Yano, Shinya Kozaki
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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: 7341675Abstract: Liquid crystalline polymers containing specified ratios of repeat units derived from hydroquinone, 2,6-naphthalenedicarboxylic acid, 4-hydroxybenzoic acid and optionally terephthalic acid have exceptionally high heat distortion temperatures, making especially useful for service at high temperatures. Compositions containing reinforcing agents, especially fibrous or platy reinforcing agents are particularly useful. These polymers and compositions are useful for electrical and electronic connectors, and as films for the electronics industry, and for other uses.Type: GrantFiled: April 12, 2006Date of Patent: March 11, 2008Assignee: E.I. du Pont de Nemours and CompanyInventors: Richard Alan Jackson, Marion G. Waggoner
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Patent number: 7304121Abstract: The present invention provides a liquid-crystalline polyester obtainable by a method comprising the steps of: (1) preparing a prepolymer consisting of the repeating units represented by formulae (I), (II), (III) and (IV): wherein, p, q, r and s represent relative molar proportions (mol %) of the repeating units in the liquid-crystalline polyester resin and satisfy the following formulae: 60?p?80, 10?r?20, 10?q+s?20, 0.05?s/(q+s)?0.3, p+q+r+s=100; and (2) heating the prepolymer in substantially solid state at 250-350° C., provided that the liquid crystalline polyester has a deflection temperature under load of 280-340° C., and a melt viscosity of 10-60 Pa·s.Type: GrantFiled: July 13, 2005Date of Patent: December 4, 2007Assignee: Kabushiki Kaisha Ueno Seiyaku Oyo KenkyujoInventors: Hiroyuki Kato, Motoki Asahara, Tetsuhide Sawada
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Patent number: 7271235Abstract: It is to provide a branched aromatic polycarbonate excellent in hue and excellent in melt properties such as melt strength.Type: GrantFiled: August 5, 2003Date of Patent: September 18, 2007Assignee: Mitsubishi Chemical CorporationInventors: Masaaki Miyamoto, Takao Tayama
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Patent number: 7238769Abstract: The present invention provides a method for joining liquid-crystalline polyester resin composition parts, characterized in that the melting point of the liquid crystalline polyester resin measured by differential scanning calorimeter is 190-250° C. and that the parts are jointed by means of welding. By using the method of the present invention, jointed articles with sufficient joint strength are provided with accuracy.Type: GrantFiled: May 10, 2005Date of Patent: July 3, 2007Assignee: Kabushiki Kaisha Ueno Seiyaku Oyo KenkyujoInventors: Masaya Kitayama, Naoshi Saito
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Patent number: 7198830Abstract: A polycarbonate resin composition obtained by blending a polycarbonate resin (A) obtained by forming a carbonate bond from 95 to 5 mol % of a dihydroxy compound having a fluorene structure represented by the general formula (1) and 5 to 95 mol % of a dihydroxy compound having a dimethanol structure represented by the general formula (2) and a carbonic diester and a polycarbonate resin (B) obtained by forming a carbonate bond from bisphenol A and a carbonic acid diester or phosgene in a ratio of (100×(A)/((A)+(B))=1 to 99% by weight and a polarizing sheet used the same.Type: GrantFiled: April 28, 2004Date of Patent: April 3, 2007Assignees: Mitsubishi Gas Chemical Company Inc., Fuji Kasei Co., Ltd.Inventors: Takayasu Fujimori, Noriyuki Kato, Shingo Kanasaki, Ryozo Kawai, Hiromi Kagaya
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Patent number: 7179401Abstract: A thermotropic liquid crystalline polymer, which is obtainable by copolymerizing a trifunctional hydroxynaphthalene carboxylic acid represented by the general formula (I) and/or reactive derivative thereof with other polymerizing monomer(s) wherein one of m and n is 1 and the other is 2, and a composition including the polymer are provided. The molded article obtained from the thermotropic liquid crystalline polymer or the composition has less anisotropy in mechanical strength and improved weld strength.Type: GrantFiled: June 11, 2002Date of Patent: February 20, 2007Assignee: Kabushiki Kaisha Ueno Seiyaku Oyo KenkyujoInventors: Ryuzo Ueno, Masaya Kitayama, Kiichi Kometani, Hiroyuki Kato, Motoki Asahara
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Patent number: 7175779Abstract: A thermotropic main-chain liquid crystalline homo- or copolymer forming a liquid crystalline phase and containing an aromatic monomer with functional groups in ortho- or meta-position. The polymer exhibits both isotropic and anisotropic properties. The present invention also provides a method for the preparation of the present polymers as well as a method of increasing the melt-processibility of polyester-based liquid crystalline polymers comprising the step of incorporating into the polymers 1 to 30 mol-% of, e.g., a ortho-substituted monomer with hydroxyl and/or carboxylic groups.Type: GrantFiled: May 3, 2000Date of Patent: February 13, 2007Assignee: Optatech CorporationInventors: Hans Kricheldorf, Andreas Gerken
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Patent number: 7173102Abstract: Facially amphiphilic polymers and articles made therefrom having biocidal surfaces are disclosed. The polymers can inhibit the growth of microorganisms in contact with the surface or in areas adjacent to said biocidal surface. There is also disclosed a method to identify and optimize the facial amphiphilicity of polyamide, polyester, polyurea, polyurethane, polycarbonate and polyphenylene polymers. Utility as a contact disinfectant is disclosed.Type: GrantFiled: March 7, 2002Date of Patent: February 6, 2007Assignee: The Trustees of the University of PennsylvaniaInventors: William F. DeGrado, Gregory N. Tew, Michael L. Klein, Dahui Liu, Jing Yuan
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Patent number: 7166690Abstract: The present invention relates to a method for the recycling waste polyester resins and the reclaimed materials therefrom. The method for recycling waste polyester resins according to one embodiment the present invention comprises (a) depolymerizing waste polyester resin; (b) polycondensing the depolymerized product from step (a) with a polyhydric alcohol to provide a polyester polymer having an acid value of 10–150 mgKOH/g; and (c) recovering the polyester polymer in solid or liquid form if the polyester polymer from step (b) has an acid value of more than 20 mgKOH/g or recovering the polyester polymer in solid form if the polyester polymer from step (b) has an acid value of less than 20 mgkOH/g. The reclaimed polyester resin according to the present invention has the excellent compatibility, dispersibility, and adhesive property for various media, and can be used easily neutralized and dissolved in water. Accordingly, the polyester resin can be used as a useful material for industrial products.Type: GrantFiled: December 14, 2002Date of Patent: January 23, 2007Assignee: Samsung Electronics Co., Ltd.Inventor: Do-Gyun Kim
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Patent number: 7160977Abstract: This invention relates to a blend of biodegradable polymers comprising: (A) about 70% to about 80% by weight of at least one flexible biodegradable polymer (A) having a glass transition less than about 0° C., (B) about 30% to about 20% by weight of at least one rigid biodegradable polymer (B) having a glass transition greater than about 10° C.; said percentages being based on the total weight of the polymer blend; wherein said polymer blend has a notched Izod impact strength according to ASTM D256 of at least 7.5 ft-lbs/in.Type: GrantFiled: December 6, 2004Date of Patent: January 9, 2007Assignee: Eastman Chemical CompanyInventors: Wesley Raymond Hale, Candace Michele Tanner
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Patent number: 7148311Abstract: Liquid crystal polyester derived from phenylene-naphthalene monomers and one or more comonomers display an improved balance of properties, including low melt viscosity, fast cycle time in molding, very low mold shrinkage, high tensile and/or flexural strength, solvent resistance, excellent barrier properties, low water absorption, low thermal expansion coefficient, excellent thermostability, and/or low flammability. The phenylene-naphthalene monomers are The one or more comonomers include 4-hydroxybenzoic acid, 2-hydroxy-6-naphthoic acid, terephthalic acid, isophthalic acid, and derivatives and combinations thereof.Type: GrantFiled: February 18, 2005Date of Patent: December 12, 2006Assignee: Rensselaer Polytechnic InstituteInventors: Brian Benicewicz, Jiping Shao
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Patent number: 7138480Abstract: This invention relates to a process for the preparation of a 3-hydroxycarboxylic acid from a 3-hydroxynitrile. More specifically, 3-hydroxyvaleronitrile is converted to 3-hydroxyvaleric acid in high yield at up to 100% conversion, using as an enzyme catalyst 1) nitrile hydratase activity and amidase activity or 2) nitrilase activity of a microbial cell. 3-Hydroxyvaleric acid is used as a substitute for ?-caprolactone in the preparation of highly branched copolyester.Type: GrantFiled: March 3, 2003Date of Patent: November 21, 2006Assignee: E. I. du Pont de Nemours and CompanyInventors: Michael G. Bramucci, Robert Dicosimo, Robert Fallon, John E. Gavagan, Frank Herkes, Lech Wilczek
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Patent number: 7132497Abstract: An aromatic dihydroxy compound conforming to formula 1 is disclosed. Also disclosed are (co)polycarbonates derived from the compound. The novel (co)polycarbonates are characterized by their reduced water uptake and improved flowability.Type: GrantFiled: August 19, 2004Date of Patent: November 7, 2006Assignee: Bayer Materialscience AktiengesellschaftInventors: Helmut-Werner Heuer, Rolf Wehrmann
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Patent number: 7132499Abstract: A polyester resin container with improved weatherability as well as colorlessness and heat resistance, made of a polyester resin composition comprising (A) 100 parts by weight of a polyester resin and (B) 0.01 to 10 parts by weight of a triazine ultraviolet absorber represented by formula (I): wherein R1 represents a straight-chain or branched alkyl group having 1 to 17 carbon atoms, which may have an alicyclic group at the terminal or in the chain thereof; and R2, R2?, R3, and R3? each represent a hydrogen atom or a methyl group.Type: GrantFiled: May 18, 2005Date of Patent: November 7, 2006Assignee: Asahi Denka Co., Ltd.Inventors: Etsuo Tobita, Yoshinori Negishi, Takahiro Horikoshi
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Patent number: 7105106Abstract: 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 are novel liquid crystalline polymers that may be produced by this process. These liquid crystalline polymers are useful as molding resins and shaped articles thereof are produced. In particular, the articles include films, sheets, containers and portions thereof comprising these LCPs.Type: GrantFiled: July 11, 2003Date of Patent: September 12, 2006Assignee: E. I. du Pont de Nemour and CompanyInventors: Michael Robert Samuels, Marion Glen Waggoner, Julius Uradnisheck
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Patent number: 7087704Abstract: It is an object of the present invention to manufacture high quality thermotropic liquid-crystalline polymer generating no low boiling gas and inducing no discoloration resulted from thermal degradation at high yield. To manufacture a liquid-crystalline polymer having 50 mol % or larger ratio of constitutive unit introduced from 4-hydroxybenzoic acid, the reaction is conducted under the presence of an acylating agent and of a catalyst quantity of aromatic sulfonic acid.Type: GrantFiled: March 7, 2005Date of Patent: August 8, 2006Assignee: Polyplastics Co., Ltd.Inventors: Keiichi Kanaka, Shinya Yamada
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Patent number: 7084233Abstract: A subject for the invention is to provide a branched aromatic polycarbonate which is excellent in hue and in melt characteristics such as melt strength. The invention provides a branched aromatic polycarbonate having a viscosity-average molecular weight of 16,000 or higher obtained by the transesterification method, characterized in that the ratio of the weight-average molecular weight (Mw) to number-average molecular weight (Mn) as measured by gel permeation chromatography and calculated for standard polystyrene (Mw/Mn) is in the range of from 2.8 to 4.5 and that the proportion of the number of moles of all structural units yielded by a rearrangement reaction in the course of melt polymerization reaction to 1 mol of structural units having the framework of an aromatic dihydroxy compound used as a starting material is higher than 0.3 mol % and not higher than 0.95 mol.Type: GrantFiled: March 31, 2004Date of Patent: August 1, 2006Assignees: Mitsubishi Chemical Corporation, Mitsubishi Engineering-Plastics CorporationInventors: Masaaki Miyamoto, Takao Tayama, Hiroshi Nakano
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Patent number: 7081509Abstract: The present invention relates to a process for preparing highly functional hyperbranched polyesters which comprises reacting a reaction solution comprising solvent and (a) one or more dicarboxylic acids or one or more derivatives thereof with one or more at least trifunctional alcohols (b) or one or more tricarboxylic acids or higher polycarboxylic acids or one or more derivatives thereof with one or more diols (c) or one or more tricarboxylic acids or higher polycarboxylic acids or one or more derivatives thereof with one or more at least trifunctional alcohols (d) or one or more di- or polyhydroxycarboxylic acids (e) or one or more hydroxydi- or hydroxypolycarboxylic acids or mixtures of at least two of the above reaction solutions in the presence of an enzyme at temperatures above 60° C. and pressures above 500 mbar.Type: GrantFiled: December 18, 2002Date of Patent: July 25, 2006Assignee: BASF AktiengesellschaftInventors: Eva Wagner, Bernd Bruchmann, Dietmar Haering, Peter Keller, Thomas Pouhe
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Patent number: 7081510Abstract: The invention provides a shell material for recording media comprising an alloy between an acrylonitrile-butadiene-styrene resin and recovery polyethylene terephthalate, the content of recovery polyethylene terephthalate in the total amount of the alloy being in the range of 5 to 80% by mass. The invention also provides a shell material for recording media comprising an alloy between an acrylonitrile-butadiene-styrene resin and recovery polyethylene terephthalate and having a window part. The content of recovery polyethylene terephthalate in the total amount of the alloy is in the range of 5 to 80% by mass, and the window part comprises the polyethylene terephthalate resin, a polycarbonate resin or a polyphenylene ether resin as a constituting material.Type: GrantFiled: March 9, 2004Date of Patent: July 25, 2006Assignee: Sony CorporationInventors: Yasuhito Inagaki, Masahiro Sawaguchi, Daisuke Hasegawa, Tadanori Kawamura
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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: 7057005Abstract: The present invention is a process for producing branched polycarbonate providing for optimum utilization of the branching agent. It was surprisingly found that adding at least a portion of the coupling catalyst to the polymerization at a point during the oligomerization in the reaction results in a higher degree of branching and improved rheological properties.Type: GrantFiled: June 29, 2004Date of Patent: June 6, 2006Assignee: Dow Global TechnologiessInc.Inventors: Susanne Rohde, Bernhard Elbert
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Patent number: 7045214Abstract: A method for recycling an optical disk includes crushing a recovered optical disk without further treatment into chips that are used as a raw material of a resin composition for forming a film. The resin composition can be formed by injection molding to form a resin molded article. A film is formed on the surface of the resin molded article by plating or coating.Type: GrantFiled: May 25, 2004Date of Patent: May 16, 2006Assignee: Sony CorporationInventor: Yasuhito Inagaki
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Thermoplastic molding compounds with improved surface properties and improved structural homogeneity
Patent number: 7041781Abstract: Homo- and/or copolymers of one or more ethylenically unsaturated monomers, suitable for the preparation of molded articles that feature improved properties, especially improved fracture properties, heat stability and notched impact strength are disclosed. These homo- and/or copolymers are characterized in that they contain less than 400 particles per m2 of surface area with a diameter greater than 200 ?m.Type: GrantFiled: May 21, 2001Date of Patent: May 9, 2006Assignee: Bayer AktiengesellschaftInventors: Alfred Eitel, Michael König, Dorothy Rose, Hans-Bernhard Hauertmann, Heinrich Alberts, Dieter Wittmann -
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: 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: 7005497Abstract: A liquid-crystalline polyester production method with a shortened reaction time and improved productivity per unit time by using an organic basic compound containing one nitrogen atom in a molecule is achieved by a liquid-crystalline polyester production method comprising carrying out acylation reaction and/or ester-exchange in the presence of an organic basic compound containing one nitrogen atom in one molecule and satisfying the following inequality (1): 0<A+0.4×B ??(1) wherein, A and B satisfy A={(Ech+?Ec)/(Eph+?Ep)}?1 and B=(?f/?fp)?1; Ec denotes the heat of formation of the organic basic compound; Ech+ denotes the heat of formation of a compound coordinated by proton; Ep denotes the heat of formation of pyridine; and Eph+ denotes the heat of formation of pyridine coordinated by proton to the nitrogen atom; ?f and ?fp independently denote parameters relevant to the steric angles.Type: GrantFiled: September 14, 2004Date of Patent: February 28, 2006Assignee: Sumitomo Chemical Company, LimitedInventors: Shinji Ohtomo, Satoshi Okamoto, Akiko Nakazono, Hideyuki Ikehira
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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: 6974857Abstract: An end-capped quinoxaline-containing hyperbranched ether-ketone polymer having repeating units of the formula: wherein n represents the degree of polymerization for the parent hyperbranched polymer, x represents the degree of endgroup functionalization, x has a value of 0.05 to 1.0, and G is selected from the group consisting of and alkyl having 2 to 16 carbon atoms, and a method for preparing the polymer are provided.Type: GrantFiled: December 8, 2003Date of Patent: December 13, 2005Assignee: The United States of America as represented by the Secretary of the Air ForceInventors: Jong-Beom Baek, Loon-Seng Tan
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Patent number: 6933356Abstract: Carboxyl group-containing polymer particles giving a neutralized viscous liquid being excellent in gel appearance and transparency. Carboxyl group-containing polymer particles comprising 55 to 94% by volume of water-swelled gel particles having a particle diameter of less than 50 ?m when the carboxyl group-containing polymer particles are dispersed and swelled in water in a concentration of 0.5% by weight, and 6 to 45% by volume of water-swelled gel particles having a particle diameter of at least 50 ?m when carboxyl group-containing polymer gel particles are dispersed and swelled in water in a concentration of 0.5% by weight.Type: GrantFiled: March 22, 2002Date of Patent: August 23, 2005Assignee: Sumitomo Seika Chemicals Co., Ltd.Inventors: Shigeki Hamamoto, Tomoki Kawakita, Masatoyo Yoshinaka
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Patent number: 6896966Abstract: This invention relates to thermoplastic article having one or more decorative materials on the surface thereof which is obtained by applying heat and pressure to a laminate wherein said thermoplastic article comprises (1) one or more decorative materials; and (2) an upper or lower sheet material; wherein the upper or lower sheet material is formed from a polyester/aromatic polycarbonate blend.Type: GrantFiled: November 22, 2002Date of Patent: May 24, 2005Assignee: Eastman Chemical CompanyInventors: Emmett Dudley Crawford, Robert William Seymour
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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: 6867280Abstract: A process for producing an aromatic liquid crystal polyester comprising reacting an aromatic diol, an aromatic hydroxycarboxylic acid, or an aromatic diol and aromatic hydroxycarboxylic acid with an aromatic dicarboxylic acid in the presence of a fatty anhydride having carbon atoms of 4 or less and a fatty anhydride having carbon atoms of over 4.Type: GrantFiled: January 16, 2002Date of Patent: March 15, 2005Assignee: Sumitomo Chemical Company, LimitedInventors: Satoshi Okamoto, Manabu Hirakawa