Patents by Inventor Michiharu Kihira
Michiharu Kihira 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: 5403887Abstract: A resin composition comprises the following components (A) and (B):Component (A): 90 to 10% by weight of modified polyolefin resin obtained by introducing a group selected from a) hydroxyl group, b) epoxy group and c) carboxyl group into a crystalline olefin copolymer consisting of at least one of ethylene and .alpha.-olefins each having 3 to 8 carbon atoms and at least one chain non-conjugated diene;Component (B): 10 to 90% by weight of polyamide resin or saturated polyester resin.This resin composition is suitable for use as a molding material for automotive, electrical parts and the like.Type: GrantFiled: March 9, 1992Date of Patent: April 4, 1995Assignee: Mitsubishi Petrochemical Company, Ltd.Inventors: Michiharu Kihira, Hiroshi Nakano
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Patent number: 5332788Abstract: A copolymer of an .alpha.-olefin with an aromatic diolefin such as divinylbenzene produced by means of Ziegler-Natta polymerization and having a vinylphenyl moiety is subjected to polymerization with an ethylenically unsaturated monomer by means of anion polymerization or free radical polymerization, whereby a graft-modified .alpha.-olefin copolymer is obtained.Type: GrantFiled: April 3, 1992Date of Patent: July 26, 1994Assignee: Mitsubishi Petrochemical Company LimitedInventors: Masuzo Yokoyama, Shinichi Yamauchi, Hiroshi Nakano, Michiharu Kihira, Hiroshi Omori
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Patent number: 5244983Abstract: A thermoplastic resin composition comprising (A) from about 10 to about 90% by weight of a hydroxyalkylated polyphenylene ether represented by formula (I): ##STR1## wherein A represents a residue of a polyphenylene ether from which a hydroxyl group is removed; and n represents an integer of from 1 to 10,and (B) from about 10 to about 90% by weight of a resin selected from a carboxyl-containing olefin resin, an epoxy-containing olefin resin, a hydroxyl-containing olefin resin, a polyamide resin, and a saturated polyester resin, provided that when (B) is the olefin resin, the hydroxyalkylated polyphenylene ether also can be represented by formula (II): ##STR2## werein A is defined as above; X represents an oxygen atom or a nitrogen atom; R.sup.1 represents an alkylene group having from 1 to 12 carbon atoms; R.sup.2 and R.sup.3 each represents a hydrocarbon group having from 1 to 6 carbon atoms; s represents 1 when X is an oxygen atom, or 2 when X is a nitrogen atom; and t represents an integer of from 1 to 3.Type: GrantFiled: July 18, 1991Date of Patent: September 14, 1993Assignee: Mitsubishi Petrochemical Co., Ltd.Inventors: Yusuke Arashiro, Michiharu Kihira, Haruo Ohmura, Shinichi Yamauchi
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Patent number: 5242990Abstract: A thermoplastic resin composition comprising (a) from 10 to 90% by weight of polyphenylene sulfide and (b) from 10 to 90% by weight of hydroxyalkylated polyphenylene ether which exhibits improved compatibility between components (a) and (b) and provides molded articles having characteristics inherent to polyphenylene sulfide and polyphenylene ether, i.e., excellent mechanical strength, excellent rigidity, and good appearance.Type: GrantFiled: August 13, 1991Date of Patent: September 7, 1993Assignee: Mitsubishi Petrochemical Co., Ltd.Inventors: Yusuke Arashiro, Haruo Ohmura, Michiharu Kihira
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Patent number: 5223576Abstract: A thermoplastic resin composition comprises the following components (A) and (B):component (A): 10 to 90% by weight polyphenylene ether resin,component (B): 90 to 10% by weight unsaturated copolymer resin obtained by copolymerizing at least one .alpha.-olefin having 2 to 12 carbon atoms and a diene compound having 4 to 15 carbon atoms, and containing 0.01 to 50 mol % of diene compound. This resin composition has excellent resistance to organic solvents and superior mechanical properties.Type: GrantFiled: November 5, 1991Date of Patent: June 29, 1993Assignee: Mitsubishi Petrochemical Company, Ltd.Inventors: Hiroshi Nakano, Takayuki Inoue, Shiroh Gotoh, Michiharu Kihira
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Patent number: 5191030Abstract: A process for producing an amino group terminated polyphenylene ether represented by the following general formula (I) ##STR1## wherein Q.sup.1 s each represents a halogen atom, a primary or secondary alkyl group, a phenyl group, an aminoalkyl group, a hydrocarbon oxy group or a halohydrocarbon oxy group; Q.sup.2 s each represents a hydrogen atom, a halogen atom, a primary or secondary alkyl group, a phenyl group, a haloalkyl group, a hydrocarbon oxy group or halohydrocarbon oxy group; R represents an aliphatic hydrocarbon group having 1 to 32 carbon atoms, an aromatic hydrocarbon group or an araliphatic hydrocarbon group; and n is a number of 10 to 500, which process comprises reacting a polyphenylene ether represented by the following general formula (II) ##STR2## wherein Q.sub.1, Q.sub.2 and n are as define above, with a primary amine halide represented by the following general formula (III)X--R--NH.sub.2 (III)wherein R is as defined above, and X represents a halogen atom.Type: GrantFiled: September 19, 1991Date of Patent: March 2, 1993Assignee: Mitsubishi Petrochemical Co., Ltd.Inventors: Haruo Ohmura, Mitsutoshi Aritomi, Michiharu Kihira, Hiroshi Nakano
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Patent number: 5177156Abstract: A process for producing a terminal-modified polyphenylene ether represented by formula (III): ##STR1## wherein Q.sup.1 represents a halogen atom, a primary of secondary alkyl group, a phenyl group, an aminoalkyl group, a hydrocarbon oxy group, or a halo-hydrocarbon oxy group; Q.sup.2 represents a hydrogen atom, a halogen atom, a primary or secondary alkyl group, a phenyl group, a haloalkyl group, a hydrocarbon oxy group, or a halo-hydrocarbon oxy group; n represents an integer of at least 10; X represents an oxygen atom or a nitrogen atom;R.sup.1 represents an alkylene group having from 1 to 12 carbon atoms; R.sup.2 and R.sup.3 each represents a hydrocarbon group having from 1 to 6 carbon atoms; s represents 1 when X is an oxygen atom, or 2 when X is a nitrogen atom; and t represents an integer of from from 1 to 3,which comprises reacting a polyphenylene ether represented by formula (I): ##STR2## wherein Q.sup.1, Q.sup.Type: GrantFiled: May 17, 1991Date of Patent: January 5, 1993Assignee: Mitsubishi Petrochemical Co., Ltd.Inventors: Mitsutoshi Aritomi, Haruo Ohmura, Hiroshi Nakano, Michiharu Kihira, Yusuke Arashiro, Fumiyoshi Yamada, Shinako Mori, Fumiyo Ikehata
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Patent number: 5134194Abstract: Thermoplastic resin composition comprising the following components A and B is presented which improves the compatibility of component resins, to achieve a thermoplastic resin having excellent molding property and mechanical strength:A. 90 to 10 wt % of a polyolefin resin containing a substituted silyl group represented by general formula;--SiR.sub.n Y.sub.3-n(wherein, R is aliphatic hydrocarbon group; Y is hydrolyzable group or hydroxyl group; n represents 0, 1 or 2), andB. 10 to 90 wt % of saturated polyester resin or hydroxyalkylated polycarbonate resin or hydroxyalkylated polyphenylene ether resin.Type: GrantFiled: January 23, 1991Date of Patent: July 28, 1992Assignee: Mitsubishi Petrochemical Co., Ltd.Inventors: Takayuki Inoue, Yusuke Arashiro, Shin-ichi Yamauchi, Michiharu Kihira, Haruo Ohmura, Fumiyoshi Yamada
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Patent number: 5037890Abstract: A copolymer of an .alpha.-olefin with an aromatic diolefin such as divinylbenzene produced by means of Ziegler-Natta polymerization and having a vinylphenyl moiety is subjected to polymerization with an ethylenically unsaturated monomer by means of anion polymerization or free radical polymerization, whereby a graft-modified .alpha.-olefin copolymer is obtained.Type: GrantFiled: October 28, 1988Date of Patent: August 6, 1991Assignee: Mitsubishi Petrochemical Company LimitedInventors: Masuzo Yokoyama, Shinichi Yamauchi, Hiroshi Nakano, Michiharu Kihira, Hiroshi Omori
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Patent number: 4985495Abstract: Disclosed is a polymer alloy consisting essentially of a composition of a polyphenylene ether, a crystalline propylene resin, and an alkenyl aromatic monomer modified propylene-dialkenylbenzene compound copolymer. The composition excels in heat resistance and resistance to oils.Type: GrantFiled: December 23, 1988Date of Patent: January 15, 1991Assignees: Toyota Jidosha Kabushiki Kaisha, Mitsubishi Petrochemical Co., Ltd.Inventors: Takeyoshi Nishio, Shinichi Yamauchi, Yusuke Arashiro, Kenyu Ohno, Masuzo Yokoyama, Hiroshi Nakano, Hiroshi Ohmori, Junji Mayumi, Michiharu Kihira