Patents by Inventor Noboru Sakamaki
Noboru Sakamaki 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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Publication number: 20040249009Abstract: An olefinic thermoplastic elastomer foam of the present invention has a density of less than 700 kg/m3, a compression set of less than 60% and a density of elastically effective chains v of preferably 3.0×10−5 to 2.0×10−4 (mol/cm3). An olefinic thermoplastic elastomer composition for preparing the above foam has an equilibrium creep compliance Je0 of 1.0×10−6 to 5.0×10−4 (Pa−1) and contains a crosslinked olefin rubber and an olefin plastic in a specific proportion. The olefinic thermoplastic elastomer composition can be prepared by melt kneading a specific crosslinked olefinic thermoplastic elastomer and a specific olefin plastic.Type: ApplicationFiled: January 30, 2004Publication date: December 9, 2004Inventors: Kiyoshi Homma, Noboru Sakamaki, Kunihide Hiraoka, Takeharu Isaki, Hirohisa Shiode, Eiichi Sugihara
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Publication number: 20040013878Abstract: The hose of the invention comprises a thermoplastic elastomer having a softening temperature of 160° C. or above as measured by a TMA softening temperature measuring apparatus, elongation at break of at least 200% as determined at a testing rate of 100 mm/min, initial flexural modulus of from 20 to 700 MPa as measured at a testing rate of 2 mm/min, and a volume change of −2 to +10% after 168 hours of soaking in a 50%-ethylene glycol aqueous solution at 100° C. In particular, the hose preferably comprises a thermoplastic elastomer comprising 15 to 95 parts by mass of an olefin resin (A) that contains 50 to 97% by mass of a specific 4-methyl-1-pentene polymer (A1) and 3 to 50% by mass of an olefin resin (A2) other than the 4-methyl-1-pentene polymer (A1), and 5 to 85 parts by mass of a crosslinked rubber (B) (components (A) and (B) total 100 parts by weight).Type: ApplicationFiled: November 29, 2002Publication date: January 22, 2004Inventors: Kiyoshi Honma, Noboru Sakamaki
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Patent number: 6589664Abstract: The present invention relates to a laminate comprising an olefinic thermoplastic elastomer which comprises: (a) a substratum layer comprising an olefinic thermoplastic elastomer composition (A) having the following characteristics {circle around (1)} to {circle around (3)}: {circle around (1)} 9≦Y−0.43X≦27 (1) wherein X denotes the JIS A-hardness value (a dimensionless value) of the olefinic thermoplastic elastomer composition determined according to the prescription of JIS K6301 and Y represents the compression set value (expressed by %) of the olefinic thermoplastic elastomer composition determined according to the prescription of JIS K6301 under a condition of 70° C.Type: GrantFiled: November 1, 2000Date of Patent: July 8, 2003Assignee: Mitsui Chemicals, Inc.Inventors: Kyoko Kobayashi, Noboru Sakamaki, Akira Uchiyama
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Patent number: 5424135Abstract: According to the present invention, there is provided a thermoplastic elastomer laminate which comprisesa layer comprising a thermoplastic elastomer (A) composed of a crystalline polyolefin and a rubber, anda layer comprising an ultra-high molecular weight polyolefin (B) or an ultra-high molecular weight polyolefin composition.In addition, a glass run channel composed of the thermoplastic elastomer laminate is also provided in the invention.Type: GrantFiled: July 25, 1994Date of Patent: June 13, 1995Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Kazuhiko Murata, Norishige Murakami, Kyooji Muraoka, Noboru Sakamaki
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Patent number: 5378543Abstract: According to the present invention, there is provided a thermoplastic elastomer laminate which comprisesa layer comprising a thermoplastic elastomer (A) composed of a crystalline polyolefin and a rubber, anda layer comprising an ultra-high molecular weight polyolefin (B) or an ultra-high molecular weight polyolefin composition.In addition, a glass run channel composed of the thermoplastic elastomer laminate is also provided in the invention.Type: GrantFiled: December 13, 1993Date of Patent: January 3, 1995Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Kazuhiko Murata, Norishige Murakami, Kyooji Muraoka, Noboru Sakamaki
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Patent number: 5302463Abstract: According to the present invention, there is provided a thermoplastic elastomer laminate which comprisesa layer comprising a thermoplastic elastomer (A) composed of a crystalline polyolefin and a rubber, anda layer comprising an ultra-high molecular weight polyolefin (B) or an ultra-high molecular weight polyolefin composition.In addition, a glass run channel composed of the thermoplastic elastomer laminate is also provided in the invention.Type: GrantFiled: April 22, 1992Date of Patent: April 12, 1994Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Kazuhiko Murata, Norishige Murakami, Kyooji Muraoka, Noboru Sakamaki
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Patent number: 5270377Abstract: In the case where a polyamide is blended with a specific partially crosslinked graft-modified polyolefin elastomer obtained by dynamically heat-treating a blend of a peroxide-crosslinking olefin copolymer rubber and an olefinic plastic with an unsaturated carboxylic acid or derivative thereof, an unsaturated epoxy monomer or an unsaturated hydroxy monomer in the presence of an organic peroxide, if the graft-modified polyolefin plastomer occupies a major portion, a composition excellent in the oil resistance, the mechanical strength and the resistance against heat aging is obtained and if the polyamide occupies a major portion, a composition excellent in the impact resistance, the rigidity and the tensile strength is obtained.Type: GrantFiled: October 19, 1992Date of Patent: December 14, 1993Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Yasuhiko Otawa, Noboru Sakamaki, Tetsuo Tojo, Katsuo Okamoto, Toshiyuki Maeda
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Patent number: 5237003Abstract: In the case where a polyamide is blended with a specific partially crosslinked graft-modified polyolefin elastomer obtained by dynamically heat-treating a blend of a peroxide-crosslinking olefin copolymer rubber and an olefinic plastic with an unsaturated carboxylic acid or derivative thereof, an unsaturated epoxy monomer or an unsaturated hydroxy monomer in the presence of an organic peroxide, if the graft-modified polyolefin plastomer occupies a major portion, a composition excellent in the oil resistance, the mechanical strength and the resistance against heat aging is obtained and if the polyamide occupies a major portion, a composition excellent in the impact resistance, the rigidity and the tensile strength is obtained.Type: GrantFiled: April 23, 1992Date of Patent: August 17, 1993Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Yasuhiko Otawa, Noboru Sakamaki, Tetsuo Tojo, Katsuo Okamoto, Toshiyuki Maeda
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Patent number: 4997707Abstract: In accordance with the present invention, there are provided laminated molded articles excellent in properties such as heat resistance, low-temperature resistance and the like and also excellent in soft touch and hand feel, said laminated molded articles comprising(a) a core layer composed of a synthetic resin,(b) an interlayer (I) composed of a polyolefin foam, polyurethane foam or thermoplastic elastomer foam, formed on said core layer,(c) an interlayer (II) composed of a modified polyolefin elastomer graft modified with at least one graft monomer selected from the group consisting of unsaturated carboxylic acids, derivatives thereof, unsaturated epoxy monomers and unsaturated hydroxy monomers, formed on said interlayer (I), and(d) a surface skin composed of at least one polymer selected from the group consisting of polyamides, polyurethane and polyesters, formed on said interlayer (II), said surface skin being decorated, if necessary, by gigging the surface thereof.Type: GrantFiled: November 28, 1989Date of Patent: March 5, 1991Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Yasuhiko Otawa, Toshiyuki Maeda, Noboru Sakamaki, Tooru Takehara
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Patent number: 4897298Abstract: A laminate comprising (a) a layer of a partially crosslinked graft-modified polyolefin elastomer formed by dynamically heat-treating a mixture of a peroxide-crosslinking olefin copolymer rubber and an olefinic plastic with an unsaturated carboxylic acid or derivative thereof, an unsaturated epoxy monomer or an unsaturated hydroxy monomer in the presence of an organic peroxide and (b) a layer of a polyamide, polyurethane or polyester is excellent in weatherability, heat resistance and dimension stability, and this laminate is effectively molded into an interior part or sealing material of an automobile, especially a glass run channel. The glass run channel molded from this laminate is excellent in the durability, the tightness of contact with glass at the time of closing and the sliding smoothness at the opening-closing operation.Type: GrantFiled: September 26, 1988Date of Patent: January 30, 1990Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Yasuhiko Otawa, Kunihide Hiraoka, Toshiyuki Maeda, Katsuo Okamoto, Noboru Sakamaki, Shizuo Shimizu
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Patent number: 4894289Abstract: A laminate comprising (a) a layer of a partially crosslinked graft-modified polyolefin elastomer formed by dynamically heat-treating a mixture of a peroxide-crosslinking olefin copolymer rubber and an olefinic plastic with an unsaturated carboxylic acid or derivative thereof, an unsaturated epoxy monomer or an unsaturated hydroxy monomer in the presence of an organic peroxide and (b) a layer of a polyamide, polyurethane or polyester is excellent in weatherability, heat resistance and dimension stability, and this laminate is effectively molded into an interior part or sealing material of an automobile, especially a glass run channel. The glass run channel molded from this laminate is excellent in the durability, the tightness of contact with glass at the time of closing and the sliding smoothness at the opening-closing operation.Type: GrantFiled: October 30, 1987Date of Patent: January 16, 1990Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Yasuhiko Otawa, Kunihide Hiraoka, Toshiyuki Maeda, Katsuo Okamoto, Noboru Sakamaki, Shizuo Shimizu