Patents by Inventor Hideo Takamatsu
Hideo Takamatsu 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: 8110629Abstract: A flame-retardant composition includes: a powdery acid-modified hydrogenated block copolymer (a) having a bulk density of 0.1 to 0.4 g/ml and which is a hydrogenated block copolymer modified by addition of an unsaturated carboxylic acid or a derivative thereof, the hydrogenated block copolymer comprises a polymer block A composed mainly of a vinyl aromatic compound unit and a polymer block B composed mainly of a conjugated diene unit, and has a weight average molecular weight of 50,000 to 500,000; a polyolefin resin (b); a non-aromatic rubber softener (c); and a metal hydrate (d). The flame-retardant composition contains the components (a), (b), (c) and (d) in proportions that satisfy the following relationships (1) to (3): 0.1?Wa/(Wa+Wb)?0.9??(1) 0.05?Wc/(Wa+Wb+Wc)?0.5??(2) 0.4?Wd/(Wa+Wb+Wc+Wd)?0.75??(3) wherein Wa, Wb, Wc and Wd represent masses of the acid-modified hydrogenated block copolymer (a), the polyolefin resin (b), the non-aromatic rubber softener (c) and the metal hydrate (d), respectively.Type: GrantFiled: September 12, 2006Date of Patent: February 7, 2012Assignee: Kuraray Co., Ltd.Inventors: Hajime Kitano, Koichi Wada, Hideo Takamatsu
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Publication number: 20090292061Abstract: A flame-retardant composition includes: a powdery acid-modified hydrogenated block copolymer (a) having a bulk density of 0.1 to 0.4 g/ml and which is a hydrogenated block copolymer modified by addition of an unsaturated carboxylic acid or a derivative thereof, the hydrogenated block copolymer comprises a polymer block A composed mainly of a vinyl aromatic compound unit and a polymer block B composed mainly of a conjugated diene unit, and has a weight average molecular weight of 50,000 to 500,000; a polyolefin resin (b); a non-aromatic rubber softener (c); and a metal hydrate (d). The flame-retardant composition contains the components (a), (b), (c) and (d) in proportions that satisfy the following relationships (1) to (3): 0.1?Wa/(Wa+Wb)?0.9??(1) 0.05?Wc/(Wa+Wb+Wc)?0.5??(2) 0.4?Wd/(Wa+Wb+Wc+Wd)?0.Type: ApplicationFiled: September 12, 2006Publication date: November 26, 2009Applicant: Kuraray Co., Ltd.Inventors: Hajime Kitano, Koichi Wada, Hideo Takamatsu
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Patent number: 6960376Abstract: The oxygen absorptive resin composition of the present invention includes: a thermoplastic resin (a) having carbon-carbon double bonds; a gas barrier resin (b) having an oxygen transmission rate of 500 ml·20 ?m/m2·day·atm or less (20° C. 65% RH); and a transition metal salt (c). This resin composition and molded articles formed using the resin composition effectively absorb and scavenge oxygen when used to package products susceptible to degradation by oxygen, such as foods and drinks.Type: GrantFiled: February 26, 2003Date of Patent: November 1, 2005Assignee: Kuraray Co., Ltd.Inventors: Shinji Tai, Hiroyuki Shimo, Masakazu Nakaya, Hideo Takamatsu, Mizuho Maeda
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Publication number: 20040167281Abstract: A rubber composition comprising (1) a diene rubber, (2) a highly saturated rubber, and (3) a block copolymer that comprises a diene polymer block A and a hydrogenated diene polymer block B and has a primary structure selected from the following structures:Type: ApplicationFiled: December 15, 2003Publication date: August 26, 2004Inventors: Hideo Takamatsu, Mizuho Maeda, Koji Kitayama, Tsutomu Yamada, Hiroshi Kanbara
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Publication number: 20030157283Abstract: The oxygen absorptive resin composition of the present invention includes: a thermoplastic resin (a) having carbon-carbon double bonds; a gas barrier resin (b) having an oxygen transmission rate of 500 ml·20 &mgr;m/m2·day·atm or less (20° C. 65% RH); and a transition metal salt (c). This resin composition and molded articles formed using the resin composition effectively absorb and scavenge oxygen when used to package products susceptible to degradation by oxygen, such as foods and drinks.Type: ApplicationFiled: February 26, 2003Publication date: August 21, 2003Applicant: KURARAY CO. LTD,Inventors: Shinji Tai, Hiroyuki Shimo, Masakazu Nakaya, Hideo Takamatsu, Mizuho Maeda
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Patent number: 6599598Abstract: The oxygen resin composition of the present invention includes: a thermoplastic resin (a) having carbon-carbon double bonds; a gas barrier resin (b) having an oxygen transmission rate of 500 ml·20 &mgr;m/m2·day·atm or less (20° C. 65% RH); and a transmission matel salt (c). This resin composition and molded articles formed using the resin composition effectively absorb and scavenge oxygen when used to package products susceptible to degradation by oxygen, such as foods and drinks.Type: GrantFiled: March 3, 2000Date of Patent: July 29, 2003Assignee: Kuraray Co., Ltd.Inventors: Shinji Tai, Hiroyuki Shimo, Masakazu Nakaya, Hideo Takamatsu, Mizuho Maeda
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Patent number: 6391233Abstract: A novel method of producing a porous product is provided, including the steps of: preparing a molded product by subjecting a molding material comprising a polymer component and a pore-forming agent dispersed in the polymer component, the pore-forming agent assuming a solid state at a room temperature, to molding at a temperature which causes the pore-forming agent to melt; and soaking the molded product with a solvent which dissolves the pore-forming agent but fails to dissolve the polymer component, to form pores.Type: GrantFiled: June 20, 2000Date of Patent: May 21, 2002Assignees: Asahi Rubber Inc., Plinst Giken Co., Ltd.Inventors: Kunihiko Otani, Mizuho Maeda, Hideo Takamatsu, Kazuhisa Takagi, Masashi Nemoto
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Patent number: 5900465Abstract: An adhesive composition suitable for a hot melt adhesive or hot melt pressure-sensitive adhesive, which comprises a block copolymer (a) and a tackifier (b), wherein said block copolymer (a) has at least one polymer block A being a hydrogenated butadiene polymer block having a 1,2-bond content of 20 mol % or less and at least one polymer block B substantially having an olefin polymer structure different from the polymer block A and having a glass transition temperature of -20.degree. C. or less and a heat of crystalline fusion of 8 cal/g or lower, and containing the polymer block A before hydrogenation in an amount of 3 to 80 wt. %.Type: GrantFiled: December 16, 1996Date of Patent: May 4, 1999Assignee: Kuraray Co., Ltd.Inventors: Makoto Nishikawa, Hideo Takamatsu, Mizuho Maeda, Hiromichi Nakata, Yoshio Hirayama
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Patent number: 5571865Abstract: A thermoplastic polymer composition which comprises100 parts by weight of polypropylene (1);5 to 100 parts by weight of a hydrogenated block copolymer (2) which has at least one block A, at least one block B and at least one block C and which has a number average molecular weight of not higher than 700,000 wherein the block A consists essentially of a butadiene polymer having a number average molecular weight of 2500 to 200,000 and a vinyl bond content of not higher than 20%, the block B consists essentially of a polymer of isoprene and butadiene at a ratio by weight of 30:70 to 100:0 and has a number average molecular weight of 30,000 to 300,000 and a vinyl bond content of not higher than 20%, and the block C consists essentially of a polymer of isoprene and butadiene at a ratio by weight of 0:100 to 100:0 and has a number average molecular weight of not higher than 200,000 and a vinyl bond content of not less than 40%; and0 to 100 parts by weight of an ethylene/propylene rubber wherein the ratio of the meltType: GrantFiled: May 12, 1995Date of Patent: November 5, 1996Assignee: Kuraray Co., Ltd.Inventors: Makoto Nishikawa, Mizuho Maeda, Hiromichi Nakata, Hideo Takamatsu, Yoshio Hirayama
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Patent number: 5439976Abstract: A polyester composition principally comprising a polyester and a specific block copolymer having terminal hydroxyl groups. The polyester composition is excellent not only in heat resistance, solvent resistance and processability, but also in shock resistance.Type: GrantFiled: July 12, 1994Date of Patent: August 8, 1995Assignee: Kuraray Company Ltd.Inventors: Satoshi Kinoshita, Hideo Takamatsu, Kazushige Ishiura, Haruhisa Masuda, Shunro Taniguchi
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Patent number: 5430095Abstract: A rubber composition having excellent processability and improved dispersion state of carbon black containing:a functional group-containing polymer having a number average molecular weight of 1,000 to 100,000 and comprising 0 to 60 mole % of a structural unit represented by the formula (1) and 100 to 40 mole % of a structural unit represented by formula (2) plus a structural unit represented by formula (3), the polymer having on one end of its molecule an average at least 0.6 group per molecule of a group represented by formula (4), a hydroxyl group or an amino group; ##STR1## wherein R.sup.1 represents a hydrogen atom or a methyl group, ##STR2## wherein R.sup.2 represents a hydrogen atom or a methyl group, ##STR3## wherein R.sup.3 represents a vinyl group or an isopropenyl group;--COOR.sup.4 (4)wherein R.sup.4 represents a hydrogen atom or an alkali metal;a solid rubber andcarbon black.Type: GrantFiled: September 1, 1993Date of Patent: July 4, 1995Assignee: Kuraray Company, Ltd.Inventors: Kazushige Ishiura, Hideo Takamatsu, Tsutomu Yamada, Atsuhisa Ogawa
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Patent number: 5393837Abstract: A polyester composition principally comprising a polyester and a specific block copolymer having terminal hydroxyl groups. The polyester composition is excellent not only in heat resistance, solvent resistance and processability, but also in shock resistance.Type: GrantFiled: January 7, 1994Date of Patent: February 28, 1995Assignee: Kuraray Company Ltd.Inventors: Satoshi Kinoshita, Hideo Takamatsu, Kazushige Ishiura, Haruhisa Masuda, Shunro Taniguchi
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Patent number: 5328345Abstract: An expansion molding apparatus for forming molded articles having consistently or partially thin-walls by expanding expandable thermoplastic resin beads in a cavity formed between molds with the application of heat. The apparatus has a moving device, for example, a cylinder which moles the molds in one orthogonal direction relative to a closing direction of the molds when filling the cavity with the expandable thermoplastic resin beads. After filling the resin beads in the cavity by moving at least one of the molds in at least one direction orthogonal to the closing direction so that a distance in a circumference section of the cavity becomes greater, the mold is moved back to the original position and the application of heat is performed to obtain molded articles.Type: GrantFiled: December 17, 1992Date of Patent: July 12, 1994Assignee: Sekisui Kaseihin Kogyo Kabushiki KaishaInventors: Ken Yamamoto, Masaru Harao, Hideo Takamatsu
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Patent number: 5198163Abstract: A method of forming molded articles having consistently or partially thin-walls by expanding expandable thermoplastic resin beads in a cavity formed between molds with the application of heat. The introduction of the resin beads is carried out after causing the width of a circumference section of the cavity to be greater than the diameter of the beads by moving one of or both of the molds in at least one direction orthogonal to a direction of closing the molds, the molds are then moved back to the normal positions, and the introduced resin beads are heated to form the molded article. Also, an expansion molding apparatus having a moving device such as a cylinder which moves the molds in at least one direction orthogonal to the closing direction during the introduction of the expandable thermoplastic resin beads, whereby consistently or partially thin-walled molded articles are manufactured.Type: GrantFiled: October 7, 1991Date of Patent: March 30, 1993Assignee: Sekisui Kaseihin Kogyo Kabushiki KaishaInventors: Ken Yamamoto, Masaru Harao, Hideo Takamatsu
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Patent number: 5043498Abstract: A process for the hydrogenation of conjugated diene polymers having alcoholic hydroxyl groups, is provided. In the process, reduced nickel is used as a catalyst and an ether or a mixture of an ether and a hydrocarbon is used as a solvent for the hydrogenation reaction whereby elimination of the group rarely occurs with a very high hydrogenation rate being attained.Type: GrantFiled: December 7, 1988Date of Patent: August 27, 1991Assignee: Kuraray Company Ltd.Inventors: Masao Ishii, Hideo Takamatsu, Kazushige Ishiura, Shobu Minatono
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Patent number: 4987194Abstract: A block copolymer having a numerical average molecular weight of 30,000 to 300,000 composed of two or more blocks consisting of aromatic vinyl units having a numerical average molecular weight of 2500 to 40,000, and one or more blocks containing a vinyl bonding content of not less than 40%, having a peak temperature of primary dispersion of tan .delta. at least 0.degree. C., and consisting of isoprene or isoprene-butadiene units in which at least a part of carbon-carbon double bonds may be hydrogenated, and a composition consisting of the block copolymer. The composition can provide a vibration-damping material.Type: GrantFiled: September 22, 1989Date of Patent: January 22, 1991Assignee: Kuraray Company, LimitedInventors: Miduho Maeda, Hideo Takamatsu, Masao Ishii, Shobu Minatono
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Patent number: 4985499Abstract: A pressure sensitive adhesive composition is provided which comprises a tri-block copolymer (a) consisting of aromatic vinyl block-conjugated diene block-aromatic vinyl block in which the conjugated diene moiety is hydrogenated and a block copolymer (b) consisting of an aromatic vinyl block and a conjugated diene block in which the conjugated diene moiety is hydrogenated. The adhesive composition is significantly improved in low temperatures characteristics, adhesion and processability with good adhesion.Type: GrantFiled: February 14, 1989Date of Patent: January 15, 1991Assignee: Kuraray Company Ltd.Inventors: Makoto Nishikawa, Hideo Takamatsu, Masao Ishii, Shobu Minatono
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Patent number: 4678841Abstract: A method of producing a cyclized polydiene comprising cyclizing a polydiene in an organic solvent with the aid of a binary catalyst comprising tin halide or titanium halide and an organosulfonic acid or a haloacetic acid. The method provides a cyclized polydiene having a narrow molecular weight distribution in a short reaction time and with high reproducibility. The method does not entail side reactions causing gelation or discoloration.Type: GrantFiled: March 4, 1985Date of Patent: July 7, 1987Assignee: Kuraray Company, Ltd.Inventors: Tamae Yoshizawa, Kiyoto Otsuka, Shiro Nagata, Hideo Takamatsu
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Patent number: 4446281Abstract: Modified cis-1,4-polyisoprene rubber obtained by incorporating into cis-1,4-polyisoprene rubber a side chain formed by succinimide residue containing in the N position a hydrocarbon residue having at least one tertiary nitrogen atom. This rubber is excellent in green strength at ordinary room temperature, and flowability at an elevated temperature. Its vulcanizate is comparable to, or better than natural rubber in breaking strength and hardness.Type: GrantFiled: May 19, 1982Date of Patent: May 1, 1984Assignee: Kuraray Co., Ltd.Inventors: Hideo Takamatsu, Shobu Minatono
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Patent number: 4409056Abstract: There is provided a curable sealing composition comprising a low molecular weight rubber, a curing agent and other additives as required and being characterized in that a block copolymer of isoprene and butadiene with a viscosity average molecular weight of 7,000-150,000 is used as the low molecular weight rubber. The composition has a good workability, and when cured, produces seals having excellent thermal stability, elasticity and sealing effect.Type: GrantFiled: November 30, 1981Date of Patent: October 11, 1983Assignee: Kuraray Co., Ltd.Inventors: Hideo Takamatsu, Shobu Minatono