Patents by Inventor Jinichiro Kato
Jinichiro Kato has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7759270Abstract: An environmentally friendly polymerization catalyst for polyalkylene terephthalate which does not use a heavy metal such as antimony, and a method for producing polyalkylene terephthalate using the catalyst. The catalyst for polymerizing a polyalkylene terephthalate is a titanium oxide sol containing an organic solvent as a dispersion medium, the sol has a light transmittance of not less than 50%, the light transmittance being measured by adjusting a concentration of the titanium oxide in the sol to 0.7 g/L and setting an optical path length to 1 cm in a wavelength range of 400 to 800 nm, and the amount of hydroxyl groups per 1 g of titanium oxide is not less than 1.8 mmol.Type: GrantFiled: May 11, 2006Date of Patent: July 20, 2010Assignee: Fuji Titanium Industry Co., Ltd.Inventors: Jinichiro Kato, Yoshiki Takeda, Takafumi Konishi
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Patent number: 7666975Abstract: There is provided a polyketone comprising repeating units, 95-100 mole % of which are 1-oxotrimethylene and having an intrinsic viscosity of 2.5-20 dl/g, wherein the content of Pd element is 0-20 ppm, terminal structures include an alkyl ester group (terminal group A) and an alkyl ketone group (terminal group B), and the equivalent ratio of terminal group A/terminal group B is 0.1-8.0. The polyketone of the present invention can be used in any forms, such as fibers and films, and can be applied to a wide variety of the uses such as clothing, reinforcing materials for rubbers, resins, cements, and optical fibers, electronic materials, battery materials, civil engineering materials, medical materials, daily commodities, fishery materials, and packaging materials.Type: GrantFiled: August 16, 2007Date of Patent: February 23, 2010Assignee: Asahi Kasei Fibers CorporationInventors: Ryu Taniguchi, Jinichiro Kato, Takashi Komatsu
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Publication number: 20090069529Abstract: An object of the present invention is to provide an environmentally friendly polymerization catalyst of polyalkylene terephthalate which does not use a heavy metal such as antimony. Another object of the present invention is to provide the method of producing polyalkylene terephthalate using the catalyst. The inventive titanium oxide sol for a catalyst for polymerizing a polyalkylene terephthalate is a titanium oxide sol containing an organic solvent as a dispersion medium, wherein the titanium oxide in the sol has a concentration of 0.7 g/L, the sol has a light transmittance of not less than 50%, the light transmittance being measured by setting an optical path length to 1 cm in a wavelength range of 400 to 800 nm, and the amount of hydroxyl groups per 1 g of titanium oxide is not less than 1.8 mmol.Type: ApplicationFiled: May 11, 2006Publication date: March 12, 2009Inventors: Jinichiro Kato, Yoshiki Takeda, Takafumi Konishi
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Patent number: 7459516Abstract: Polyketone fibers comprising, on the basis of the entire repeating units, 95% by mole of a repeating unit of the formula (1) shown below, and showing a minimum value (Amin(F)) of a UV absorbance of 0.5 or less in a wavelength region of 210 to 240 nm.Type: GrantFiled: August 27, 2003Date of Patent: December 2, 2008Assignee: Asahi Kasei Fibers CorporationInventors: Toru Morita, Hitoshi Yamazaki, Jinichiro Kato, Teruhiko Matsuo
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Publication number: 20080262189Abstract: There is provided a polyketone comprising repeating units, 95-100 mole % of which are 1-oxotrimethylene and having an intrinsic viscosity of 2.5-20 dl/g, wherein the content of Pd element is 0-20 ppm, terminal structures include an alkyl ester group (terminal group A) and an alkyl ketone group (terminal group B), and the equivalent ratio of terminal group A/terminal group B is 0.1-8.0. The polyketone of the present invention can be used in any forms, such as fibers and films, and can be applied to a wide variety of the uses such as clothing, reinforcing materials for rubbers, resins, cements, and optical fibers, electronic materials, battery materials, civil engineering materials, medical materials, daily commodities, fishery materials, and packaging materials.Type: ApplicationFiled: August 16, 2007Publication date: October 23, 2008Inventors: Ryu TANIGUCHI, Jinichiro Kato, Takashi Komatsu
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Publication number: 20080167438Abstract: An aliphatic ketone polymer comprising a unit represented by the following formula (1), the unit represented by the following formula (2), and a unit represented by the following formula (3) or (4). (In the formulae, R1 to R10 may be the same or different and each represents hydrogen, an optionally halogenated C1-20 hydrocarbon group, halogeno, hydroxy, ester, alkoxy, cyano, imide, silyl, or a group selected from the group consisting of C1-20 hydrocarbon groups substituted by a functional group selected among hydroxy, ester, alkoxy, cyano, imide, and silyl, provided that R2 and R8 may be bonded to R3 and R9, respectively, to form a monocycle or polycycle; and n1, n2, and N3 satisfy 1?n1?20, 1?n2?35,000, and 1?n3?40,000.Type: ApplicationFiled: May 10, 2005Publication date: July 10, 2008Applicants: Asahi Kasei Chemicals Corporation, Asahi Fibers CorporationInventors: Tomonari Watanabe, Takashi Komatsu, Jinichiro Kato, Masami Yonemura, Kenji Ebara
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Patent number: 7332561Abstract: Poly(trimethylene terephthalate) composition particles comprising 80% by weight or more of trimethylene terephthalate units based on the entire repeating units, having an intrinsic viscosity from 0.8 to 2 dl/g, and satisfying the following conditions (a) to (c): (a) the composition particles have a particle size of 3 mm or less and a weight of less than 1 mg/particle; (b) the composition particles have a terminal carboxyl group content of 25 meq/kg or less; and (c) the composition particles have a cyclic dimer content of 1.5% by weight or less.Type: GrantFiled: March 14, 2003Date of Patent: February 19, 2008Assignee: Asahi Kasei Fibers CorporationInventors: Jinichiro Kato, Satoru Yoshida, Teruhiko Matsuo
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Patent number: 7223829Abstract: A solution of a polyketone as a copolymer of carbon monoxide and one or more olefins, wherein 90 wt % or more of said copolymer comprises carbon monoxide units and olefin units, and a solvent is an aqueous solution of at least one member selected from the group consisting of zinc salts, calcium salts, thiocyanates and iron salts.Type: GrantFiled: December 15, 2005Date of Patent: May 29, 2007Assignee: Asahi Kasei Kabushiki KaishaInventors: Jinichiro Kato, Toru Morita, Kiyoshi Fujieda
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Publication number: 20060135738Abstract: There is provided a polyketone comprising repeating units, 95-100 mole % of which are 1-oxotrimethylene and having an intrinsic viscosity of 2.5-20 dl/g, wherein the content of Pd element is 0-20 ppm, terminal structures include an alkyl ester group (terminal group A) and an alkyl ketone group (terminal group B), and the equivalent ratio of terminal group A/terminal group B is 0.1-8.0. The polyketone of the present invention can be used in any forms, such as fibers and films, and can be applied to a wide variety of the uses such as clothing, reinforcing materials for rubbers, resins, cements, and optical fibers, electronic materials, battery materials, civil engineering materials, medical materials, daily commodities, fishery materials, and packaging materials.Type: ApplicationFiled: December 29, 2005Publication date: June 22, 2006Inventors: Ryu Taniguchi, Jinichiro Kato, Takashi Komatsu
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Publication number: 20060128933Abstract: Polyketone fibers comprising, on the basis of the entire repeating units, 95% by mole of a repeating unit of the formula (1) shown below, and showing a minimum value (Amin(F)) of a UV absorbance of 0.5 or less in a wavelength region of 210 to 240 nm.Type: ApplicationFiled: August 27, 2003Publication date: June 15, 2006Inventors: Toru Morita, Hitoshi Yamazaki, Jinichiro Kato, Teruhiko Matsuo
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Publication number: 20060094861Abstract: A solution of a polyketone as a copolymer of carbon monoxide and one or more olefins, wherein 90 wt % or more of said copolymer comprises carbon monoxide units and olefin units, and a solvent is an aqueous solution of at least one member selected from the group consisting of zinc salts, calcium salts, thiocyanates and iron salts.Type: ApplicationFiled: December 15, 2005Publication date: May 4, 2006Inventors: Jinichiro Kato, Toru Morita, Kiyoshi Fujieda
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Patent number: 7015303Abstract: A solution of a polyketone as a copolymer of carbon monoxide and one or more olefins, wherein 90 wt % or more of said copolymer comprises carbon monoxide units and olefin units, and a solvent is an aqueous solution of at least one member selected from the group consisting of zinc salts, calcium salts, thiocyanates and iron salts.Type: GrantFiled: August 5, 1999Date of Patent: March 21, 2006Assignee: Asahi Kasei Kabushiki KaishaInventors: Jinichiro Kato, Toru Morita, Kiyoshi Fujieda
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Patent number: 6916535Abstract: The present invention provides a poly(trimethylene terephthalate) pellet comprising 80 wt % or more of trimethylene terephthalate repeating units copolymerized with bis(3-hydroxypropyl) ether at a ratio in a range from 0.01 to 2 wt %, wherein an amount of terminal carboxyl groups is 25 milli-equivalent/kg or less and an intrinsic viscosity is in a range from 0.8 to 2 dl/g, which pellet has an L* value of 75 or more, a b* value in a range from ?2 to 5, and a weight in a range from 1 to 50 mg/piece.Type: GrantFiled: April 29, 2002Date of Patent: July 12, 2005Assignee: Asahi Kasei Kabushiki KaishaInventors: Shinichi Okajima, Jinichiro Kato, Katsuhiro Fujimoto
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Publication number: 20050104030Abstract: Poly(trimethylene terephthalate) composition particles comprising 80% by weight or more of trimethylene terephthalate units based on the entire repeating units, having an intrinsic viscosity from 0.8 to 2 dl/g, and satisfying the following conditions (a) to (c): (a) the composition particles have a particle size of 3 mm or less and a weight of less than 1 mg/particle; (b) the composition particles have a terminal carboxyl group content of 25 meq/kg or less; and (c) the composition particles have a cyclic dimer content of 1.5% by weight or less.Type: ApplicationFiled: March 14, 2003Publication date: May 19, 2005Inventors: Jinichiro Kato, Satoru Yoshida, Teruhiko Matsuo
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Patent number: 6881478Abstract: Disclosed are polyketone fibers which contain a ketone unit represented by —CH2CH2—CO— as a main repeating unit, and have an intrinsic viscosity of not less than 0.5 dl/g, a crystal orientation of not less than 90%, a density of not less than 1.300 g/cm3, an elastic modulus of not less than 200 cN/dtex, and a heat shrinkage of ?1 to 3%. The polyketone fibers are high in strength and elastic modulus, and excellent in fatigue resistance, processability, heat resistance, dimensional stability, and, besides, adhesion, and, therefore, can be applied to the fields which require high fatigue resistance, such as tire cords, belts, hoses, ropes, etc.Type: GrantFiled: August 31, 2004Date of Patent: April 19, 2005Assignee: Asahi Kasei Kabushiki KaishaInventors: Jinichiro Kato, Toru Morita, Ryu Taniguchi
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Publication number: 20050075475Abstract: There is provided a polyketone comprising repeating units, 95-100 mole % of which are 1-oxotrimethylene and having an intrinsic viscosity of 2.5-20 dl/g, wherein the content of Pd element is 0-20 ppm, terminal structures include an alkyl ester group (terminal group A) and an alkyl ketone group (terminal group B), and the equivalent ratio of terminal group A/terminal group B is 0.1-8.0. The polyketone of the present invention can be used in any forms, such as fibers and films, and can be applied to a wide variety of the uses such as clothing, reinforcing materials for rubbers, resins, cements, and optical fibers, electronic materials, battery materials, civil engineering materials, medical materials, daily commodities, fishery materials, and packaging materials.Type: ApplicationFiled: December 24, 2002Publication date: April 7, 2005Inventors: Ryu Taniguchi, Jinichiro Kato, Takashi Komatsu
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Patent number: 6867322Abstract: An ester-forming monomer obtained by depolymerization of polytrimethylene terephthalate and having an acrolein content of no greater than 0.5 wt %. Polymers obtained using the monomer and fibers, films and molded articles comprising the polymers. The ester-forming monomer is obtained by reacting polytrimethylene terephthalate with at least one compound selected from among monoalcohols, 1,3-propanediol and water in the presence of a basic substance. When the recovered ester-forming monomer is used as the starting material for production of a polymer, it is possible to produce a molding polymer for fibers, films and the like with quality equivalent to or higher than that obtained using virgin monomer.Type: GrantFiled: September 13, 2000Date of Patent: March 15, 2005Assignee: Asahi Kasei Kabushiki KaishaInventors: Jinichiro Kato, Katsuhiro Fujimoto
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Publication number: 20050031864Abstract: Disclosed are polyketone fibers which contain a ketone unit represented by —CH2CH2—CO— as a main repeating unit, and have an intrinsic viscosity of not less than 0.5 dl/g, a crystal orientation of not less than 90%, a density of not less than 1.300 g/cm3, an elastic modulus of not less than 200 cN/dtex, and a heat shrinkage of ?1 to 3%. The polyketone fibers are high in strength and elastic modulus, and excellent in fatigue resistance, processability, heat resistance, dimensional stability, and, besides, adhesion, and, therefore, can be applied to the fields which require high fatigue resistance, such as tire cords, belts, hoses, ropes, etc.Type: ApplicationFiled: August 31, 2004Publication date: February 10, 2005Inventors: Jinichiro Kato, Toru Morita, Ryu Taniguchi
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Patent number: 6818728Abstract: Disclosed are polyketone fibers which contain a ketone unit represented by —CH2CH2—CO— as a main repeating unit, and have an intrinsic viscosity of not less than 0.5 dl/g, a crystal orientation of not less than 90%, a density of not less than 1.300 g/cm3, an elastic modulus of not less than 200 cN/dtex, and a heat shrinkage of −1 to 3%. The polyketone fibers are high in strength and elastic modulus, and excellent in fatigue resistance, processability, heat resistance, dimensional stability, and, besides, adhesion, and, therefore, can be applied to the fields which require high fatigue resistance, such as tire cords, belts, hoses, ropes, etc.Type: GrantFiled: February 26, 2002Date of Patent: November 16, 2004Assignee: Asahi Kasei Kabushiki KaishaInventors: Jinichiro Kato, Toru Morita, Ryu Taniguchi
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Patent number: 6740400Abstract: A poly(trimethylene terephthalate) comprising 80% by weight or more of trimethylene terephthalate units based on the entire repeating units, having an intrinsic viscosity of from 0.4 to 1.5 dl/g, and satisfying the following formula (1) [—OH]/([—OH]+[—COOH]+[—CH2CH═CH2])×100≧40 (1) wherein [—OH], [—COOH] and [—CH2CH═CH2] represent a terminal hydroxyl group content, a terminal carboxyl group content and a terminal allyl group content of the poly(trimethylene terephthalate), respectively. The poly(trimethylene terephthalate) can be produced by reacting terephthalic acid and/or its lower alcohol ester is reacted with 1,3-propanediol to form 1,3-propanediol ester of terephthalic acid and/or its oligomer, and then polycondensation reaction of the reactant is conducted at temperature of from 235 to 270° C.Type: GrantFiled: February 6, 2002Date of Patent: May 25, 2004Assignee: Asahi Kasei Kabushiki KaishaInventors: Jinichiro Kato, Yoichiro Azuma, Katsuhiro Fujimoto, Teruhiko Matsuo