Patents by Inventor Kiichi Kometani
Kiichi Kometani 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).
-
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
-
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
-
Publication number: 20050054811Abstract: 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: ApplicationFiled: November 25, 2002Publication date: March 10, 2005Inventors: Ryuzo Ueno, Masaya Kitayama, Kiichi Kometani, Hiyoyuki Kato, Kazunori Ueda
-
Publication number: 20040256599Abstract: 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) 1Type: ApplicationFiled: December 15, 2003Publication date: December 23, 2004Inventors: Ryuzo Ueno, Masaya Kitayama, Kiichi Kometani, Hiroyuki Kato, Motoki Asahara
-
Patent number: 6802989Abstract: A liquid crystal polyester resin comprising 1 to 500 mmol % of a recurring unit derived from 4-hydroxyisophthalic acid and/or salicylic acid as a comonomer and 10 to 5,000 ppm in terms of an alkali metal of an alkali metal compound. This resin has excellent colorability, improved heat resistance and high mechanical properties.Type: GrantFiled: December 14, 2001Date of Patent: October 12, 2004Assignee: Kabushiki Kaisha Ueno Seiyaku Oyo KenkyushoInventors: Ryuzo Ueno, Masaya Kitayama, Kiichi Kometani, Hiroyuki Kato, Kazunori Ueda
-
Patent number: 6755991Abstract: An aromatic dicarboxylic acid composition, essentially consisting of (a) at least one aromatic dicarboxylic acid; (b) 1-3000 ppm of at least one compound selected from the group consisting of 6-formyl-2-naphthoic acid, 6-methoxycarbonyl-2-naphthoic acid and trimellitic acid; (c) 1-1000 ppm of at least one alkali metal and (d) 0-3000 ppm of at least one transition metal is provided. By employing the composition in manufacturing liquid crystalline polyester, LPCs with good coloring property and improved heat resistance as well as excellent mechanical property can be obtained. The present invention also provides a liquid crystalline polyester resin prepared by using the composition.Type: GrantFiled: July 30, 2001Date of Patent: June 29, 2004Assignee: Kabushiki Kaisha Ueno Seiyaku Oyo KenkyujoInventors: Kiichi Kometani, Hiroyuki Kato, Kazunori Ueda
-
Patent number: 6664341Abstract: A liquid crystal polyester resin composition which suppresses the formation of a blister caused by a heat treatment at a high temperature and has excellent moldability. This composition comprises (A) a liquid crystal polyester comprising at least two aromatic oxycarbonyl recurring units and (B) a liquid crystal polyester comprising at least two aromatic oxycarbonyl recurring units, at least one aromatic dioxy recurring unit and at least one aromatic dicarbonyl recurring unit. The weight ratio of the liquid crystal polyester (A) to the liquid crystal polyester (B) is 90/10 to 30/70.Type: GrantFiled: December 14, 2001Date of Patent: December 16, 2003Assignee: Kabushiki Kaisha Ueno Seiyaku Oyo KenkyushoInventors: Masaya Kitayama, Kiichi Kometani, Naoshi Saito
-
Publication number: 20020190239Abstract: A liquid crystal polyester resin composition which suppresses the formation of a blister caused by a heat treatment at a high temperature and has excellent moldability. This composition comprises (A) a liquid crystal polyester comprising at least two aromatic oxycarbonyl recurring units and (B) a liquid crystal polyester comprising at least two aromatic oxycarbonyl recurring units, at least one aromatic dioxy recurring unit and at least one aromatic dicarbonyl recurring unit. The weight ratio of the liquid crystal polyester (A) to the liquid crystal polyester (B) is 90/10 to 30/70.Type: ApplicationFiled: December 14, 2001Publication date: December 19, 2002Inventors: Masaya Kitayama, Kiichi Kometani, Naoshi Saito
-
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
-
Publication number: 20020045728Abstract: An aromatic dicarboxylic acid composition, essentially consisting of (a) at least one aromatic dicarboxylic acid; (b) 1-3000 ppm of at least one compound selected from the group consisting of 6-formyl-2-naphthoic acid, 6-methoxycarbonyl-2-naphthoic acid and trimellitic acid; (c) 1-1000 ppm of at least one alkali metal and (d) 0-3000 ppm of at least one transition metal is provided. By employing the composition in manufacturing liquid crystalline polyester, LPCs with good coloring property and improved heat resistance as well as excellent mechanical property can be obtained. The present invention also provides a liquid crystalline polyester resin prepared by using the composition.Type: ApplicationFiled: July 30, 2001Publication date: April 18, 2002Applicant: KABUSHIKI KAISHA UENO SEIYAKU OYO KENKYUJOInventors: Kiichi Kometani, Hiroyuki Kato, Kazunori Ueda
-
Patent number: 6121385Abstract: Rubber-modified styrenic resin compositions of this invention comprise 90 to 30% by weight of rubber-modified styrenic resins (A) containing rubbery polymers dispersed with an average particle diameter of 0.3 to 2.0 .mu.m in the phase of styrenic polymers (C) and 10 to 70% by weight of styrene-(meth)acrylate ester copolymer resins (B) and, in said compositions, the content of (meth)acrylate ester units is 5 to 50% by weight and the toluene-insolubles (% by weight: X) and the rubber component (% by weight: Y) are present at a ratio (X/Y) in the range from 1.2 to 3.5. The compositions excel in appearance, scratch resistance, impact resistance and rigidity and are easy to fabricate.Type: GrantFiled: November 17, 1998Date of Patent: September 19, 2000Assignee: Nippon Steel Chemical Co., Ltd.Inventors: Yasuji Shichijo, Jing Hui Chen, Keiichi Hayashi, Shigeru Owada, Isao Tanaka, Kiichi Kometani
-
Patent number: 5112913Abstract: The subject invention relates to the polyester compositions being composed of (a) an aromatic polyester having the relative viscosity of 1.2 to 2.0, (b) an aromatic polycarbonate having the number average molecular weight of 10,000 to 80,000, and (c) a glycidyl-group containing copolymer consisting essentially of .alpha.-olefine and glycidyl ester of .alpha.,.beta.-ethylenically unsaturated carboxylic acid and having the melt index of 0.1 to 100. They are useful for manufacturing electric, electronic and automotive parts, being superior in flow property and melt stability on molding, as well as in mechanical properties particularly in impact and hot-air aging resistance. The compositions can be molded to form various articles by conventional molding methods.Type: GrantFiled: July 26, 1990Date of Patent: May 12, 1992Assignee: Toray Industries, Inc.Inventors: Kenjiro Horiuchi, Kiichi Kometani, Toshihide Inoue
-
Patent number: 5110849Abstract: The present invention concerns a thermoplastic polyester resin composition comprising a thermoplastic polyester and a metal alcoholate salt of an aromatic alcohol containing a hydroxy group directly attached to the aromatic ring as the essential ingredient, having a high crystallization rate, excellent moldability upon molding at low temperature, less molecular weight reduction during production and molding of the resin composition, and satisfactory melt degradation stability and hydrolysis resistance.Type: GrantFiled: August 10, 1990Date of Patent: May 5, 1992Assignee: Toray Industries, Inc.Inventors: Hiroo Karasawa, Kiichi Kometani, Kiyokazu Nakamura
-
Patent number: 5017650Abstract: A resin composition comprising 100 parts by weight of a polyester composition comprised of(A) 5-95% by weight of an aromatic polyester, and(B) 95-5% by weight of a polyphenylene ether having a repeating unit of ##STR1## and/or a modified polyphenylene ether obtained by reacting 0.05-20% by weight of an active functional group containing monomer to said polyphenylene ether,(C) 0.05-30 parts by weight of an epoxy compound represented by the formula ##STR2## and (D) 1-60 parts by weight of an impact modifier.Type: GrantFiled: May 11, 1989Date of Patent: May 21, 1991Assignee: Toray Industries, Inc.Inventors: Kiyokazu Nakamura, Kiichi Kometani, Akihiko Koshino, Kenjiro Horiuchi
-
Patent number: 5006610Abstract: A resin composition comprising 100 parts by weight of a polyester composition comprised of(A) 5-95% by weight of an aromatic polyester, and(B) 95-5% by weight of a polyphenylene ether having a repeating unit of ##STR1## and/or a modified polyphenylene ether obtained by reacting 0.05-20% by weight of an active functional group containing monomer to said polyphenylene ether, and(C) 0.05-30 parts by weight of an epoxy compound represented by the formula ##STR2## is superior in moldability and dimensional stability, and its molded article is distinguished in mechanical property and solvent resistance.Type: GrantFiled: May 11, 1989Date of Patent: April 9, 1991Assignee: Toray Industries, Inc.Inventors: Kiyokazu Nakamura, Kiichi Kometani, Akihiko Koshino, Kenjiro Horiuchi
-
Patent number: 4879328Abstract: Disclosed is a polyester composition comprising (a) 100 parts by weight of an aromatic polyester; (b) 0.005-10 parts by weight of an epoxy compound of the formula (I): ##STR1## (wherein Ar means C.sub.6 -C.sub.20 aromatic group or C.sub.6 l-C.sub.20 alicyclic group, n means an integer of 0-20); and (c) 1-70 parts by weight of at least one elastomer which has at least one functional group selected from the group consisting of epoxy groups, carboxyl group, carboxylate ester groups, carboxylic acid amide groups, acid anhydride group, imide groups, carboxylate salt groups, hydroxyl group, amino group and cyano group, the elastomer having a tensile modulus of 1-6,000 kg/cm.sup.2. The polyester resin composition of the present invention can easily be molded and the obtained molded article excells in mechanical properties such as impact strength.Type: GrantFiled: May 13, 1988Date of Patent: November 7, 1989Assignee: Toray IndustriesInventors: Hiroo Karasawa, Kiichi Kometani, Kiyomi Okita
-
Patent number: 4664983Abstract: A polyester composition according to the subject invention is composed of thermoplastic polyesters and the titanium dioxide and/or aluminum oxide having specific particle diameters.The polyester composition provides the molded articles which display reduced warpage.The polyester composition has high plating characteristic and provide superior metal-plated moldings.Type: GrantFiled: January 8, 1985Date of Patent: May 12, 1987Assignee: Toray Industries Inc.Inventors: Kiyokazu Nakamura, Kiichi Kometani, Toshihide Inoue
-
Patent number: 4461871Abstract: A polyester resinous composition comprising (a) an aromatic polyester, (b) a copolymer of an .alpha.-olefin and a glycidyl ester of .alpha.,.beta.-ethylenically unsaturated carboxylic acid and (c) an ethylene based copolymer of ethylene and .alpha.-olefin having more than three carbon atoms. The composition has highly improved impact strength at low temperature and good flow properties upon injection molding. The composition can be molded to form various articles by conventional molding methods.Type: GrantFiled: July 21, 1982Date of Patent: July 24, 1984Assignee: Toray Industries, Inc.Inventors: Kiichi Kometani, Yoshiyuki Yamamoto, Masana Yanagi
-
Patent number: 4284540Abstract: Impact-modified and moldability-improved polyethylene terephthalate molding compositions are provided which comprise polyethylene terephthalate resins, a copolymer of .alpha.-olefins and glycidyl esters of .alpha.,.beta.-ethylenically-unsaturated carboxylic acids and barium salt of fatty acids. Glass fiber reinforcement of the polyester compositions is preferable because of further enhancement of the moldability of the polyester composition thereof. In addition, resistance to moist heat is also increased.Type: GrantFiled: April 16, 1980Date of Patent: August 18, 1981Assignee: Toray Industries, Inc.Inventors: Hiroshi Iida, Kiichi Kometani, Masana Yanagi
-
Patent number: 4246378Abstract: A thermoplastic polyester resinous composition which comprises (a) a thermoplastic polyester, (b) an epoxy compound and (c) an organic sulfonate and/or organic sulfate salt, is disclosed. The polyester composition has excellent form stability in melt as well as beneficial mechanical properties such as impact strength. The composition can be molded to form various shaped articles by use of conventional molding methods.Type: GrantFiled: November 5, 1979Date of Patent: January 20, 1981Assignee: Toray Industries, Inc.Inventors: Kiichi Kometani, Hotsuma Okasaka