Patents by Inventor Hisayuki Iwai
Hisayuki Iwai 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: 9393764Abstract: An automobile fuel tank includes an outer wall including a main body of a multiple-layered synthetic resin, in which the outer wall includes at least an outer body layer, an outer adhesive layer, a barrier layer, an inner adhesive layer, and an inner body layer. The outer body layer and the inner body layer include a high density polyethylene (HDPE) as a main ingredient. Each of the outer adhesive layer and the inner adhesive layer includes a synthetic resin having adhesiveness against both the high density polyethylene (HDPE) and the barrier layer. The barrier layer includes a synthetic resin.Type: GrantFiled: December 25, 2012Date of Patent: July 19, 2016Assignees: FTS CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Ryuta Aoe, Hiroyuki Tanaka, Kazuaki Naito, Hisamitsu Kato, Hisayuki Iwai, Yoshiro Umemoto, Katsuhiro Kajikawa
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Publication number: 20140197175Abstract: {Problem} To provide a fuel tank with excellent blow moldability, high deformation-suppressing properties and high heat resistance. {Solution} In an automobile fuel tank, a high-density polyethylene (HDPE) of an outer body layer 12 and an inner body layer 16 of an outer wall 10 has the following physical properties: 1) a modulus of elasticity of 1100 to 1400 MPa at 23° C.; 2) a modulus of elasticity of 340 to 430 MPa at 65° C.; 3) a modulus of elasticity of 400 to 510 MPa at 23° C. after being immersed in Fuel D for 200 hours at 65° C.; 4) a Charpy impact strength of 7 to 14 kJ/m2 at ?40° C.; 5) a full-notch creep test (FNCT) result of 50 to 300 hours at 80° C.; 6) a melt flow rate (MFR) result of 4 to 6 (g/10 minutes) at 190° C. and a load of 21.6 kg; and 7) a melt tension of 18 to 25 g when a sample that has been melted at 210° C. is extruded from a nozzle with a diameter of 2.095 mm and a length of 8 mm at an extrusion rate of 15 mm/minute, and drawn at a take-up speed of 7.5 m/minute.Type: ApplicationFiled: December 25, 2012Publication date: July 17, 2014Applicant: FTS CO., LTD.Inventors: Ryuta Aoe, Hiroyuki Tanaka, Kazuaki Naito, Hisamitsu Kato, Hisayuki Iwai, Yoshiro Umemoto, Katsuhiro Kajikawa
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Patent number: 6759465Abstract: A thermoplastic composition which is obtained by melt-kneading (1) 55 to 75 wt. % crystalline polypropylene resin together with (2) 10 to 30 wt. % elastomer comprising either a rubber containing a vinyl aromatic compound or a mixture thereof with an ethylene/&agr;-olefin random copolymer rubber and (3) 15 to 25 wt. % talc having an average particle diameter of 3 &mgr;m or smaller. The composition satisfies specific requirements with respect to: the long period obtained by X-ray small-angle scattering attributable to the vinyl aromatic-containing rubber in a blend obtained by melt-kneading the ingredients (1) and (2); the shape and diameter of the elastomer particles present near the polypropylene/elastomer interface in the blend; and the difference between the glass transition point of the ingredient (1) and that of the composition attributable to the crystalline polypropylene homopolymer parts.Type: GrantFiled: December 22, 2000Date of Patent: July 6, 2004Assignees: Sumitomo Chemical Company, Limited, Toyota Jidosha Kabushiki KaishaInventors: Moriyasu Shimojo, Kenichi Ohkawa, Susumu Kanzaki, Takayuki Nagai, Takao Nomura, Masatoshi Matsuda, Hisayuki Iwai
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Patent number: 6730728Abstract: The present invention provides a resin composition high in melting flow, exhibiting good properties, excellent in moldability and shrinkage properties, and hence suitable for automobile exteriors, by including (A) propylene/ethylene block copolymer having a melt flow rate (MFR) of 100 to 200 g/10 min., its propylene homopolymer component having an MFR of 210 to 400 g/10 min. and isotactic pentad fraction of 0.98 or more, and its copolymer portion containing propylene at 65 to 85% by weight; 50 to 70% by weight, (B) ethylene/octene and/or ethylene/butene random copolymer; 10 to 25% by weight, (C) styrene-based hydrogenated block copolymer rubber; 4 to 9% by weight and (D) talc; 16 to 24% by weight.Type: GrantFiled: January 11, 2002Date of Patent: May 4, 2004Assignees: Japan Polychem Corporation, Toyota Jidosha Kabushiki KaishaInventors: Masatoshi Matsuda, Hisayuki Iwai, Takayuki Nagai, Yukihito Zanka, Mitsuhiro Murayama, Yuji Fujita, Hironari Sano
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Patent number: 6667359Abstract: There are disclosed a polypropylene composition for automotive parts which has a melt index at 230° C. and at 2.16 kgf of at least 30 g/10 minutes and which comprises 55 to 60% by weight of (1) propylene/ethylene block copolymer; 20 to 25% by weight of (2) rubber comprising a styrene/ethylene/propylene/styrene block copolymer and/or a styrene/ethylene/1-butene/styrene block copolymer and an olefinic elastomer; and 18 to 23% by weight of (3) talc, and also an automotive part which comprises the above polypropylene composition.Type: GrantFiled: June 23, 2000Date of Patent: December 23, 2003Assignees: Idemitsu Petrochemical Co., Ltd., Toyota Jidosha Kabushiki KaishaInventors: Masaru Nakagawa, Koki Hirano, Yutaka Obata, Yasuhisa Sugita, Takao Nomura, Masatoshi Matsuda, Hisayuki Iwai, Takayuki Nagai
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Publication number: 20030092818Abstract: The present invention provides a resin composition high in melting flow, exhibiting good properties, excellent in moldability and shrinkage properties, and hence suitable for automobile exteriors, by including (A) propylene/ethylene block copolymer having a melt flow rate (MFR) of 100 to 200 g/10 min., its propylene homopolymer component having an MFR of 210 to 400 g/10 min. and isotactic pentad fraction of 0.98 or more, and its copolymer portion containing propylene at 65 to 85% by weight; 50 to 70% by weight, (B) ethylene/octene and/or ethylene/butene random copolymer; 10 to 25% by weight, (C) styrene-based hydrogenated block copolymer rubber; 4 to 9% by weight and (D) talc; 16 to 24% by weight.Type: ApplicationFiled: January 11, 2002Publication date: May 15, 2003Inventors: Masatoshi Matsuda, Hisayuki Iwai, Takayuki Nagai, Yukihito Zanka, Mitsuhiro Murayama, Yuji Fujita, Hironari Sano
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Patent number: 6441081Abstract: A polypropylene resin composition which comprises: (1) 55 to 75% by weight of (A) a polypropylene resin consisting of a mixture of the following polymers (i) and (ii): (i) a propylene-ethylene block copolymer having a propylene homopolymer part which is the first segment and having a propylene-ethylene random copolymer part which is the second segment and (ii) a propylene homopolymer having an intrinsic viscosity [&eegr;]P of 0.8 to 1.8 dl/g as measured in tetralin at 135° C., (2) 21 to 30% by weight of (B) an ethylene-1-octene copolymer rubber having a melt flow rate (JIS-K-6758 at 190° C.Type: GrantFiled: July 11, 2000Date of Patent: August 27, 2002Assignees: Sumitomo Chemical Company, Limited, Toyota Jidosha Kabushiki KaishaInventors: Hajime Sadatoshi, Kenichi Ohkawa, Susumu Kanzaki, Hisayuki Iwai, Takao Nomura, Shoichi Ichikawa
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Patent number: 6180709Abstract: There is provided a thermoplastic resin composition comprising the following components (A) to (E): component (A): 50 to 74.7% by weight of a Ziegler-Natta catalyst sequentially polymerized blend of a propylene homopolymer and an ethylene-propylene copolymer, component (B): 5 to 10% by weight of an ethylene-octene random copolymer, component (C): 5 to 10% by weight of an ethylene-butene random copolymer, component (D): 0.3 to 5% by weight of an elastomer.Type: GrantFiled: May 15, 1998Date of Patent: January 30, 2001Assignees: Japan Polychem Corporation, Toyota Jidosha Kabushiki KaishaInventors: Takeyoshi Nishio, Takayuki Nagai, Hisayuki Iwai, Yukihito Zanka, Izumi Ishii, Hiroki Satoh, Yoshihiro Sobajima, Mitsuhiro Murayama
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Patent number: 6156836Abstract: This invention provides polypropylene resin compositions which have sharply improved balance of physical properties in comparison with the related polypropylene materials, are materials that can be used in both interior and exterior parts of automobiles, have excellent thin-wall moldability and can sharply reduce generation of flow marks. Particularly, it provides a polypropylene resin composition which comprises specified amounts of (A) a specified ethylene-propylene block copolymer, (B) a specified thermoplastic elastomer and (C) talc, wherein it has specified values of physical properties measured by ASTM and has a degree of b-axis orientation of 720 or more which is calculated from the ratio of differential peak intensities measured by wide-angle X-ray diffraction of the central area of an ASTM No. 1 dumbbell prepared by injection molding.Type: GrantFiled: December 24, 1998Date of Patent: December 5, 2000Assignees: Japan Polychem Corporation, Toyota Jidosha Kabushiki KaishaInventors: Kunio Iwanami, Akira Kobayashi, Mitsuhiro Murayama, Yuji Fujita, Takayuki Nagai, Takao Nomura, Masatoshi Matsuda, Osamu Kito, Hisayuki Iwai
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Patent number: 6121363Abstract: A crystalline propyleiie block-copolymer composition exhibiting superior flowability upon molding for use in automobile parts, which composition comprises 41 to 71% by weight of a crystalline propylene block-copolymer composed of a propylene homopolymer portion (Fp) and an ethylene/propylene random copolymer portion (Fc) and having an ethylene content of 1 to 10% by weight and a melt flow rate (MFR) of 20 to 100 g/10 min.; 12 to 22% by weight of a first hydrogenated product of a block-copolymer having a relatively smaller stylene content; 2 to 12% by weight of a second hydrogenated product of a block-copolymer having a relatively greater stylene content; and 15 to 25% by weight of talc, wherein the propylene homopolymer portion (Fp) contains 20 to 50% by weight of a low molecular weight propylene homopolymer having an MFR of 400 to 1,000 g/10 min., the average MFR being 100 to 350 g/10 min.Type: GrantFiled: February 17, 1999Date of Patent: September 19, 2000Assignees: Grand Polymer Co., Ltd., Toyota Jidosha Kabushiki KaishaInventors: Ikunori Sakai, Mikio Hashimoto, Takayuki Nagai, Takao Nomura, Masatoshi Matsuda, Osamu Kito, Hisayuki Iwai
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Patent number: 5567759Abstract: Propylene polymer compositions of the present invention comprising a specific propylene block copolymer, specific ethylene-propylene copolymer rubber, specific ethylene-propylene-diene copolymer rubber, specific ethylene-butene-1 copolymer rubber, and talc in specific proportions are provided. The propylene polymer compositions of the invention are capable of providing therefrom molded products excellent in balance between stiffness and impact resistance, and having high surface hardness with excellent scratch resistance.Type: GrantFiled: April 21, 1995Date of Patent: October 22, 1996Assignees: Mitsui Petrochemical Industries, Ltd., Toyota Jidosha Kabushiki KaishaInventors: Hiroshi Taniguchi, Akihiko Yamamoto, Takao Nomura, Takeyoshi Nishio, Hisayuki Iwai
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Patent number: 5461105Abstract: A resin composition having excellent paint coatability containing (a) 50-80 weight % of a multi-stage polymerized propylene-ethylene block copolymer consisting essentially of (i) a propylene homopolymer portion, (ii) a propylene-ethylene random copolymer portion, and (iii) an ethylene homopolymer portion, (b) 20-40 weight % of an ethylene-.alpha.-olefin copolymer elastomer, and (c) 20 weight % or less of an inorganic filler, components in the components (a) and (b), which are soluble in p-xylene at a room temperature, having a number-average molecular weight of 4.times.10.sup.4 or more and a weight-average molecular weight of 20.times.10.sup.4 or more.Type: GrantFiled: April 3, 1995Date of Patent: October 24, 1995Assignees: Tonen Chemical Corporation, Toyota Jidosha Kabushiki KaishaInventors: Yoshiharu Saito, Masao Sakaizawa, Kunio Iwanami, Kitsusho Kitano, Michihisa Tasaka, Kenji Kawazu, Shizuo Miyazaki, Takao Nomura, Takeyoshi Nishio, Hisayuki Iwai
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Patent number: 5438091Abstract: A resin composition having excellent paint coatability containing (a) 50-80 weight % of a multi-stage polymerized propylene-ethylene block copolymer consisting essentially of (i) a propylene homopolymer portion, (ii) a propylene-ethylene random copolymer portion, and (iii) an ethylene homopolymer portion, (b) 20-40 weight % of an ethylene-.alpha.-olefin copolymer elastomer, and (c) 20 weight % or less of an inorganic filler, components in the components (a) and (b), which are soluble in p-xylene at a room temperature, having a number-average molecular weight of 4.times.10.sup.4 or more and a weight-average molecular weight of 20.times.10.sup.4 or more.Type: GrantFiled: October 25, 1994Date of Patent: August 1, 1995Assignees: Tonen Chemical Corporation, Toyota Jidosha Kabushiki KaishaInventors: Yoshiharu Saito, Masao Sakaizawa, Kunio Iwanami, Kitsusho Kitano, Michihisa Tasaka, Kenji Kawazu, Shizuo Miyazaki, Takao Nomura, Takeyoshi Nishio, Hisayuki Iwai
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Patent number: 5308908Abstract: A polypropylene resin composition comprising:(A) 45 to 70% by weight of an ethylene-propylene block copolymer synthesized under the process comprising the steps of;(a) polymerizing propylene with a Ziegler-Natta catalyst to obtain a highly crystalline polypropylene that contain not less than 97% by weight of a fraction insoluble in boiling n-heptane, and(b) copolymerizing ethylene with the polypropylene (a), and which(a) contains 0.5 to 10% by weight of ethylene,(b) contains 5 to 20% by weight of a fraction being soluble in p-xylene at room temperature and having an intrinsic viscosity value of not less than 2 (measured in decalin at 135.degree. C.),(c) has a melt-flow index value of 30 to 100 g/10 min., and,(d) has a value of flexural modulus of not less than 18,000 kg/cm.sup.2,(B) 10 to 20% by weight of an amorphous ethylene-propylene copolymer having(a) an ethylene content of 70 to 90% by weight,(b) a Mooney viscosity value (ML.sub.1+4 at 100.degree. C.) of 5 to 70,(C) 5 to 15% by weight of an ethylene-.Type: GrantFiled: August 28, 1992Date of Patent: May 3, 1994Assignee: Ube Industries, Ltd.Inventors: Osamu Fukui, Kouhei Ueno, Yoshifumi Nakano, Ikunori Sakai, Takao Nomura, Takeyoshi Nishio, Hisayuki Iwai
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Patent number: 5164448Abstract: Curable unsaturated polyester resin compositions from which molded products with superior surface smoothness can be obtained include a block copolymer of a specified form, an unsaturated polyester, a vinyl monomer, a filler, a curing catalyst and a reinforcing fiber. The block copolymer is of the form A--(B).sub.n where A is non-hydrogenated polyisoprene block having viscosity average molecular weight of 10000 or more, B is saturated polyester block obtainable by condensation of organic dicarboxylic anhydride and 1,2-epoxide, more than 50 mol % of terminal groups of the polyester block being carboxylic acid group, A and B are connected by ester linkage and n is not less than 2. Block copolymers of this type can be formed by starting with carboxylic acid or hydroxyl group in polyisoprene and by alternate condensation of organic dicarboxylic anhydride and 1,2-epoxide.Type: GrantFiled: September 19, 1991Date of Patent: November 17, 1992Assignees: Takeda Chemical Industries, Ltd., Toyota Jidosha Kabushiki Kaisha, Takemoto Yushi Kabushiki KaishaInventors: Yasuhiro Mishima, Hisayuki Iwai, Kenichi Nishino, Sanzi Aoki, Mitsuo Kinoshita, Tatsuhiko Ozaki
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Patent number: 5077326Abstract: A quickly curable unsaturated polyester composition with high surface quality contains an unsaturated polyester, a vinyl monomer, either an alkane polyol polyacrylate or an alkane polyol polymethylacrylate, a thermoplastic resin, and one or more curing catalysts selected from t-butylperoxy benzoate, t-butylperoxy octoate and 2,5-dimethyl-2,5-di(benzoilperoxy) hexane. Molding compounds are obtained by impregnating glass fibers with such composition and molded products obtained by curing such molding material have improved surface smoothness.Type: GrantFiled: June 8, 1989Date of Patent: December 31, 1991Assignee: Toyota Jidosha Kabushiki KaishaInventors: Takashi Shibata, Koichi Akiyama, Sanzi Aoki, Yasuhiro Mishima, Hisayuki Iwai, Ken Hatta
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Patent number: 5064900Abstract: A curable unsaturated polyester resin composition contains graft copolymers each having 10-60 weight % of a first constituent given by ##STR1## 38-89.7 weight % of a second constituent given by ##STR2## and 0.3-2 weight % of a third constituent which is a vinyl monomer unit having carboxylic acid or carboxylic anhydride groups, unsaturated polyester, vinyl monomer, a filler, a curing catalyst, and reinforcing fibers, where either of R.sup.1 and R.sup.2 is H, the other being either H or CH.sub.3, R.sub.3 is ethylene group or propylene group, R.sup.4 is hydrocarbon group with 1-18 carbton atoms, R.sup.5 is alkyl group with 1-4 carbon atoms, R.sup.6 is alkyl group with 1-3 carbon atoms, m is 6-90 and n is 1-5.Type: GrantFiled: January 19, 1990Date of Patent: November 12, 1991Inventors: Hisayuki Iwai, Yasuhrio Mishima, Ken Hatta, Kenichi Nishino, Sanji Aoki, Tatsuhiko Ozaki, Hirotaka Wada
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Patent number: 4952652Abstract: Unsaturated polyester compositions which are quickly curable and from which molded products with superior surface quality can be obtained are characterized as being composed of an unsaturated polyester, an olefinic unsaturated monomer, an aromatic vinyl-conjugated diene block copolymer or a hydrogenated aromatic vinyl-conjugated diene block copolymer, a mixture of t-butylperoxy benzoate, t-butylperoxy octoate and 1,1-bis(t-butylperoxy) 3,3,5-trimethyl cyclohexane, and at least one selected from organic compounds of cobalt, copper and manganese.Type: GrantFiled: August 15, 1988Date of Patent: August 28, 1990Assignees: Toyota Jidosha Kabushiki Kaisha, Takeda Chemical Industries, Ltd.Inventors: Kenichi Nishino, Takashi Shibata, Sanzi Aoki, Yasuhiro Mishima, Hisayuki Iwai, Ken Hatta