Patents Assigned to Sumitomo Naugatuck Co., Ltd.
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Patent number: 5266634Abstract: A resin composition containing a mixture of a polycarbonate resin and a rubber-reinforced styrene base resin which is prepared by polymerizing, in the presence of a rubbery polymer, a monomer mixture of an aromatic vinyl monomer, at least one of cyanated vinyl monomers and alkyl esters of unsaturated carboxylic acids and at least one other vinyl monomer; a polyolefin graft polymer which is prepared by polymerizing, in the presence of a crystalline polyolefin, a monomer of an aromatic vinyl monomer and at least one of cyanated vinyl monomers and alkyl esters of unsaturated carboxylic acids; and optionally a terpolymer of an olefin, an unsaturated dicarboxylic anhydride and an alkyl ester of an unsaturated carboxylic acid or an epoxy group-containing olefin copolymer of an unsaturated epoxy compound, an olefin and optionally an ethylenically unsaturated compound, which composition has good coating properties.Type: GrantFiled: November 20, 1991Date of Patent: November 30, 1993Assignee: Sumitomo Naugatuck Co., Ltd.Inventors: Akitoshi Ito, Yutaka Yoshida
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Patent number: 5250590Abstract: A flame retardant resin composition comprising (A) 70 to 10% by weight of a rubber-reinforced styrene base resin, (B) 20 to 85% by weight of a polycarbonate resin, (C) 5 to 35% by weight of a high molecular weight halogen-containing compound of the formula: ##STR1## wherein n is an average polymerization degree and an integer of 4 to 30, R and R' are independently a hydrogen atom, a methyl group, an epoxypropyl group, a phenyl group, a halogenated phenyl group or a group of the formula: wherein m is an integer of 0 to 3, which compound has a bromine content of at least 45% by weight and an epoxy equivalent of at least 10,000 g/mol, and (D) 0 to 10% by weight of an antimony compound, which resin composition is excellent not only in heat stability but also in heat resistance, impact resistance, processability and light resistance.Type: GrantFiled: November 5, 1991Date of Patent: October 5, 1993Assignee: Sumitomo Naugatuck Co., Ltd.Inventors: Fumio Nakai, Hidetaka Matsuzaki, Koji Matsumoto, Ichiro Kondou
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Patent number: 5155151Abstract: A thermoplastic resin composition having improved heat stability which comprises a thermoplastic resin which contains at least 5% by weight of an .alpha.-alkyl-substituted aromatic copolymer comprising .alpha.-alkyl-substituted aromatic vinyl compound and at least one other comonomer copolymerizable therewith, wherein the composition contains a metal-deactivating agent which has a molecular weight of not more than 2,000 and at least one group of the formula: ##STR1## or an organometallic colorant containing free metal in an amount of not more than 2,000 ppm, from which a molded article having no or less silver streaks can be produced.Type: GrantFiled: February 21, 1992Date of Patent: October 13, 1992Assignee: Sumitomo Naugatuck Co., Ltd.Inventors: Kenji Hashimoto, Syuzi Takahashi, Hiroyuki Minematsu
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Patent number: 5093419Abstract: A thermoplastic resin composition comprising (A) 5 to 50 parts by weight of a saturated polyester resin, (B) 10 to 70 parts by weight of a graft polymer obtainable by polymerizing an aromatic vinyl compound and an unsaturated nitrile in the presence of a conjugated diene base rubber, (C) 10 to 70 parts by weight of an .alpha.-alkylstyrene-unsaturated nitrile copolymer comprising 50 to 85% by weight of the .alpha.-alkylstyrene and 50 to 15% by weight of the unsaturated nitrile, provided that the total amount of the components (A), (B) and (C) is 100 parts by weight, wherein the content of the conjugated diene base rubber in the composition is from 5 to 30% by weight, which composition provides a molded article having improved properties such as chemical resistance, impact resistance, flexural modulus, heat resistance and dimensional stability.Type: GrantFiled: March 13, 1990Date of Patent: March 3, 1992Assignee: Sumitomo Naugatuck Co., Ltd.Inventors: Mikio Kodama, Motoichi Yano, Katsuji Abe
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Patent number: 5082898Abstract: A resin composition comprising:(A) 10 to 90 parts by weight of a polyphenylene ether resin,(B) 8 to 88 parts by weight of an ABS resin,(C) 1 to 30 parts by weight of a first graft copolymer selected from the group consisting of(C-I) a graft copolymer which is obtainable by polymerizing a monomer mixture comprising an aromatic vinyl compound and at least one other compound copolymerizable therewith in the presence of a polymer (C-1) comprising an unsaturated nitrile compound, an aromatic vinyl compound and at least one other vinyl compound copolymerizable therewith and has a vinyl group at least at one of molecular ends, and(C-II) a graft copolymer which is obtainable by polymerizing at least one vinyl compound in the presence of a polymer (C-1) and a polymer (C-2) comprising the aromatic vinyl compound and at least one other compound copolymerizable therewith and has a vinyl group at least at one of molecular ends,(E) 1 to 30 parts by weight of a second graft copolymer which is obtainable by polymerizing a moType: GrantFiled: September 22, 1988Date of Patent: January 21, 1992Assignee: Sumitomo Naugatuck Co., Ltd.Inventors: Hiroyuki Minematsu, Yasuo Nagai
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Patent number: 4963613Abstract: An adhesive composition comprising:a polymer latex containing a copolymer which comprises(a) 40 to 80% by weight of a conjugated diene monomer and(b) 0.5 to 30% by weight of a cyanated vinyl monomer,(c) 5 to 35% by weight of vinylpyridine and(d) not more than 53% by weight of an aromatic vinyl monomer; anda resorcin-formalin resin, which composition can adhere various fibers to rubbers.Type: GrantFiled: July 7, 1989Date of Patent: October 16, 1990Assignee: Sumitomo Naugatuck Co., Ltd.Inventors: Yasushi Toyoda, Saburo Mishiba
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Patent number: 4900787Abstract: A thermoplastic resin composition affording a delustered shaped article which comprises (A) a rubber-modified copolymer with (B) an epoxy group-containing olefin polymer or an unsaturated carboxylic acid-modified olefin polymer (B').Type: GrantFiled: September 7, 1988Date of Patent: February 13, 1990Assignee: Sumitomo Naugatuck Co., Ltd.Inventors: Hajime Sakano, Akitoshi Ito, Motoichi Yano, Yasuhiro Honda, Takayoshi Fujiwara
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Patent number: 4880874Abstract: A resin composition comprising(A) 10 to 99% by weight of a polycarbonate resin and(B) 90 to 1% by weight of a resin which comprises(b-1) 100 to 10% by weight of a copolymer which is obtainable by polymerizing 1 to 800 parts by weight of an unsaturated epoxy monomer and 0 to 2,000 parts by weight of other copolymerizable monomer in the presence of 100 parts by weight of an ethylene-.alpha.-olefin base rubber, and(b-2) 0 to 90% by weight of a copolymer which is obtainable by polymerizing at least one monomer selected from the group consisting of aromatic vinyl compounds, cyanated vinyl compounds and alkyl unsaturated carboxylates.Type: GrantFiled: September 7, 1988Date of Patent: November 14, 1989Assignee: Sumitomo Naugatuck Co., Ltd.Inventors: Mikio Hirai, Tokuo Tatsuda, Tomio Yoshida
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Patent number: 4877833Abstract: A heat resistant copolymer composition is provided by blending two kinds of copolymers one of which is obtainable by polymerizing a maleimide monomer (A), an aromatic vinyl monomer (B), an unsaturated nitrile monomer (C) and optionally at least one other comonomer copolymerizable therewith (D) in a specific monomer ratio in the presence or absence of an elastomeric polymer and which has an intrinsic viscosity of 0.3 to 1.2 dl/g, and another of which is obtainable by copolymerizing the aromatic vinyl monomer (B), the unsaturated nitrile (C) and optionally at least one other comonomer copolymerizable therewith (D) in a specific monomer ratio in the presence or absence of the elastomeric polymer and which has an intrinsic viscosity of 0.3 to 1.5 dl/g.Type: GrantFiled: November 6, 1987Date of Patent: October 31, 1989Assignee: Sumitomo Naugatuck Co., Ltd.Inventors: Masatsune Kondo, Kiyoshi Ogura, Koiti Kuramoto
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Patent number: 4861820Abstract: An adhesive composition comprising(A) 100 parts by weight of a copolymer latex mixture consisting of(a1) 50 to 95% by weight (expressed as a solid content) of a butadiene-styrene-vinylpyridine copolymer latex and(a2) 5 to 50% by weight (expressed as a solid content) of a carboxylated butadiene-styrene base copolymer latexand(B) 10 to 30 parts by weight of a resorcinformalin resin, which adheres fiber to rubber with good initial adhesion strength and/or without deterioration of adhesion strength after thermal history, and has good mechanical stability.Type: GrantFiled: August 27, 1987Date of Patent: August 29, 1989Assignee: Sumitomo Naugatuck Co., Ltd.Inventors: Yasushi Toyoda, Saburo Mishiba, Toshiyasu Nishioka
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Patent number: 4855355Abstract: A molding resin composition comprising (A) a saturated polyester resin, (B) a graft copolymer and (C) a rubber-reinforced resin, wherein a weight ratio of the saturated polyester resin (A) to a total weight of the graft copolymer (B) and the rubber-reinforced resin (C) is from 95:5 to 5:95, a weight ratio of the graft copolymer (B) to the rubber-reinforced resin is from 100:0 to 5:95, and the graft copolymer (B) is one prepared by copolymerizing an unsaturated epoxide monomer and at least one monomer selected from the group consisting of aromatic vinyl monomers, cyanated vinyl monomers and alkyl unsaturated carboxylates in the presence of an ethylene-.alpha.-olefin base rubber, which can provide a molded article having improved impact strength, weld strength, stiffness and mold shrinkage factor.Type: GrantFiled: March 28, 1988Date of Patent: August 8, 1989Assignee: Sumitomo Naugatuck Co., Ltd.Inventors: Mikio Hirai, Tokuo Tatsuda, Tomio Yoshida
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Patent number: 4824905Abstract: A thermoplastic resin composition comprising:(A) polyamide have a relative viscosity in sulfuric acid of not less than 2.0 and less than 3.0,(B) a graft copolymer which is obtainable by copolymerizing an aromatic vinyl monomer, a cyanated vinyl monomer and other vinyl monomer copolymerizable with the former two monomers in the presence of a rubbery polymer and(C) a carboxylic acid-modified copolymer comprising monomeric units derived from an aromatic vinyl monomer, a cyanated vinyl monomer and an .alpha.,.beta.-unsaturated monocarboxylic acidwherein the weight ratio of polyamide (A) to the total amount of the graft copolymer (B) and the carboxylic acid-modified copolymer (C) is from 90:10 to 10:90, the content of .alpha.,.beta.-unsaturated monocarboxylic acid is 0.1 to 1.5% by weight based on the total amount of the graft copolymer (B) and the carboxylic acid-modified copolymer (C), and the content of rubbery polymer is 5 to 30% by weight based on the whole weight of the composition.Type: GrantFiled: February 10, 1988Date of Patent: April 25, 1989Assignee: Sumitomo Naugatuck Co., Ltd.Inventors: Tadashi Saeki, Kiyoshi Ikawa, Seiji Kurita, Katsuji Ueno
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Patent number: 4757111Abstract: A weather-resistant resin having excellent impact resistance, processability and appearance, which comprises a graft polymer comprising an ethylene/alpha-olefin elastomer and at least one monomeric component chosen from aromatic vinyl monomers, vinyl cyanides and alkyl unsaturated carboxylates grafted thereon, the graft polymer having a material soluble in tetrahydrofuran and n-hexane in a volume ratio of 1:4 in a content of not more than 40% by weight and having a material insoluble in tetrahydrofuran in a content of not more than 60% by weight.Type: GrantFiled: December 26, 1985Date of Patent: July 12, 1988Assignee: Sumitomo Naugatuck Co., Ltd.Inventors: Mikio Hirai, Yoshiaki Nishikubo, Tomio Yoshida, Tsuneo Ochi
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Patent number: 4734456Abstract: A thermoplastic resin composition having excellent and well balanced physical properites such as chemical resistance, drop weight impact resistance and thermal stability which comprises (A) a styrenic polymer and (B) a ternary polymer comprising 50 to 98.5% by weight of an olefin, 0.5 to 10% by weight of an unsaturated dicarboxylic acid anhydride and 1 to 40% by weight of an unsaturated carboxylic acid alkyl ester, the weight proportion of the styrenic polymer (A) and the ternary polymer (B) being 100:0.5-200.Type: GrantFiled: November 10, 1986Date of Patent: March 29, 1988Assignee: Sumitomo Naugatuck Co., Ltd.Inventors: Kazuhiko Motomatsu, Mikio Kodama, Hiromichi Aoki, Ichiro Sato
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Patent number: 4705827Abstract: A thermoplastic resin composition having excellent physical properties such as heat resistance and impact resistance and being improved in resistance to heat decomposition which comprises:(A) an unsaturated dicarboxylic acid anhydride polymer produced by polymerization of (a-1) at least one unsaturated dicarboxylic acid anhydride and (a-2) at least one of aromatic vinyl compounds, unsaturated nitrile compounds and unsaturated carboxylic acid esters in the presence or absence of (a-3) at least one rubbery material,(B) a polycarbonate resin,(C) a modified olefin polymer, and optionally(D) a rubber-reinforced resin produced by polymerizing (d-1) at least one of aromatic vinyl compounds, unsaturated nitrile compounds and unsaturated carboxylic acid esters in the presence of (d-2) a rubber polymer.Type: GrantFiled: March 28, 1986Date of Patent: November 10, 1987Assignee: Sumitomo Naugatuck Co., Ltd.Inventors: Mikio Kodama, Akitoshi Ito, Motoichi Yano, Takayoshi Fujiwara, Satoshi Umeyama
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Patent number: 4657975Abstract: A thermoplastic resin composition having high heat resistance and good impact resistance, which comprises (A) at least one unsaturated dicarboxylic acid anhydride polymer obtainable by polymerizing at least one unsaturated dicarboxylic acid anhydride and at least one aromatic vinyl compound with or without at least one other polymerizable monomer in the presence or absence of a rubbery material and (B) at least one olefin polymer chosen from (B-1) an olefin/alkyl unsaturated carboxylate copolymer, (B-2) an unsaturated carboxylic acid-modified olefin polymer and (B-3) an epoxy group-containing olefin polymer, the weight proportion of the unsaturated dicarboxylic acid anhydride polymer (A) and the olefin polymer (B) being 100:1-100.Type: GrantFiled: October 16, 1985Date of Patent: April 14, 1987Assignee: Sumitomo Naugatuck Co., Ltd.Inventors: Mikio Kodama, Akitoshi Ito
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Patent number: 4554316Abstract: A thermoplastic resin composition affording a delustered shaped article which comprises (A) a rubber-modified copolymer with (B) an epoxy group-containing olefin polymer or an unsaturated carboxylic acid-modified olefin polymer (B').Type: GrantFiled: November 7, 1983Date of Patent: November 19, 1985Assignee: Sumitomo Naugatuck Co., Ltd.Inventors: Hajime Sakano, Akitoshi Ito, Motoichi Yano, Yasuhiro Honda, Takayoshi Fujiwara
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Patent number: 4490506Abstract: A thermoplastic resin composition excellent in impact resistance and moldability and improved in falling ball impact strength at a weld part which comprises (A) a polycarbonate resin having a reduced viscosity at 25.degree. C. in chloroform of 0.40 to 0.55 and (B) a diene-rubber modified resin comprising 10 to 100% by weight of a graft polymer of a diene rubber chosen from polybutadiene, styrene/butadiene copolymer and butadiene-acrylonitrile copolymer, with an aromatic vinyl compound and at least one of a vinyl cyanide and an alkyl unsaturated carboxylate grafted thereon and 90 to 0% by weight of a copolymer of an aromatic vinyl compound with at least one of a vinyl cyanide and an alkyl unsaturated carboxylate. The diene-rubber modified resin has apparent melt viscosities at 250.degree. C. of 5.times.10.sup.3 to 1.times.10.sup.5 poise at a shear rate of 10.sup.2 sec.sup.-1 and of 1.5.times.10.sup.3 to 1.times.10.sup.4 poise at a shear rate of 10.sup.3 sec.sup.Type: GrantFiled: October 7, 1983Date of Patent: December 25, 1984Assignee: Sumitomo Naugatuck Co. Ltd.Inventors: Hajime Sakano, Akitoshi Ito, Motoichi Yano, Yasuhiro Honda
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Patent number: 4444950Abstract: A thermoplastic resin composition improved in weld strength which comprises (A) a polycarbonate resin and (B) a rubber modified copolymer with (C) an epoxy group-containing olefin copolymer.Type: GrantFiled: March 1, 1983Date of Patent: April 24, 1984Assignee: Sumitomo Naugatuck Co., Ltd.Inventors: Hajime Sakano, Akitoshi Ito, Motoichi Yano, Yasuhiro Honda
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Patent number: 4438229Abstract: A thermoplastic composition which comprises a blend comprising 20 to 80% by weight of a polycarbonate resin and 80 to 20% by weight of a graft polymer obtained by grafting at least one aromatic vinyl compound and at least one of vinyl cyanides and alkyl unsaturated carboxylates onto a conjugated diene rubber or its mixture with a copolymer of at least one aromatic vinyl compound and at least one of vinyl cyanides and alky unsaturated carboxylates in an amount of not more than 90% by weight on the basis of the combined amount of the graft polymer and the copolymer, and a polyolefin or a plasticizer having a light transmission of not less than 70% when determined on the film of 20 microns in thickness prepared by the use of a solution of the plasticizer (0.25 g) and acrylonitrile-styrene copolymer (weight ratio of acrylonitrile and styrene, 30:70; 0.75 g) in acetone (10 ml), the weight proportion of the blend and the polyolefin or the plasticizer being 100:0.2-20.Type: GrantFiled: September 8, 1982Date of Patent: March 20, 1984Assignees: Sumitomo Naugatuck Co., Ltd., Honda Motor Co., Ltd.Inventors: Yoshitugu Fujimori, Yasuo Takabori, Hajime Sakano, Akitoshi Ito