Patents by Inventor Eiji Shiba
Eiji Shiba 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: 10604643Abstract: The pipe articles with excellent stress crack resistance can be achieved by providing ethylene copolymer composition comprises ethylene and a C6-C10 ?-olefin comonomer; the ethylene copolymer having a total density of 0.945-0.980 g/cm3 and a MFR5 of 0.10-0.50 g/10 min; and the ethylene copolymer having a comonomer content of 1-5% wt. The ethylene copolymer has Mx/My in the range of not less than 14.0; gpcBR in the range of from 0.20 to 0.80; and strain hardening modulus <Gp> in the range of not less than 53.4.Type: GrantFiled: November 15, 2016Date of Patent: March 31, 2020Assignees: SCG Chemicals Co., Ltd., Mitsui Chemicals, Inc.Inventors: Natthaporn Suchao-in, Kenji Iwamasa, Eiji Shiba, Warachad Klomkamol, Patcharin Samphawamontri, Watcharee Cheevasrirungruang, Shinichi Kojoh, Yasunori Kaneko, Takashi Fukawa, Thipphaya Pathaweeisariyakul
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Publication number: 20190248991Abstract: The pipe articles with excellent stress crack resistance can be achieved by providing ethylene copolymer composition comprises ethylene and a C6-C10 ?-olefin comonomer; the ethylene copolymer having a total density of 0.945-0.980 g/cm3 and a MFR5 of 0.10-0.50 g/10 min; and the ethylene copolymer having a comonomer content of 1-5% wt. The ethylene copolymer has Mx/My in the range of not less than 14.0; gpcBR in the range of from 0.20 to 0.80; and strain hardening modulus <Gp> in the range of not less than 53.4.Type: ApplicationFiled: November 15, 2016Publication date: August 15, 2019Applicants: SCG Chemicals Co., Ltd., Mitsui Chemicals, Inc.Inventors: Natthaporn SUCHAO-IN, Kenji IWAMASA, Eiji SHIBA, Warachad KLOMKAMOL, Patcharin SAMPHAWAMONTRI, Watcharee CHEEVASRIRUNGRUANG, Shinichi KOJOH, Yasunori KANEKO, Takashi FUKAWA, Thipphaya PATHAWEEISARIYAKUL
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Patent number: 9969853Abstract: Means for solving the problems The thermoplastic resin composition (X1) of the present invention comprises (A1), (B1), (C1), and optionally (D1) below: 1 to 90 wt % of an isotactic polypropylene (A1); 9 to 98 wt % of a propylene/ethylene/?-olefin copolymer (B1) containing 45 to 89 mol % of propylene-derived structural units, 10 to 25 mol % of ethylene-derived structural units, and optionally, 0 to 30 mol % of C4-C20 ?-olefin-derived structural units (a1); 1 to 80 wt % of a styrene-based elastomer (C1); and 0 to 70 wt % of an ethylene/?-olefin copolymer (D1) whose density is in the range of 0.850 to 0.910 g/cm3, wherein (A1)+(B1)+(C1)+(D1)=100 wt %.Type: GrantFiled: November 4, 2015Date of Patent: May 15, 2018Assignee: MITSUI CHEMICALS, INC.Inventors: Hiroshi Hoya, Kiminori Noda, Norihide Inoue, Hiroshi Uehara, Eiji Shiba, Masayoshi Yamaguchi, Manabu Kawamoto, Akira Yamashita
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Patent number: 9963567Abstract: Means for solving the problems The thermoplastic resin composition (X1) of the present invention comprises (A1), (B1), (C1), and optionally (D1) below: 1 to 90 wt % of an isotactic polypropylene (A1); 9 to 98 wt % of a propylene/ethylene/?-olefin copolymer (B1) containing 45 to 89 mol % of propylene-derived structural units, 10 to 25 mol % of ethylene-derived structural units, and optionally, 0 to 30 mol % of C4-C20 ?-olefin-derived structural units (a1); 1 to 80 wt % of a styrene-based elastomer (C1); and 0 to 70 wt % of an ethylene/?-olefin copolymer (D1) whose density is in the range of 0.850 to 0.910 g/cm3, wherein (A1)+(B1)+(C1)+(D1)=100 wt %.Type: GrantFiled: November 4, 2015Date of Patent: May 8, 2018Assignee: MITSUI CHEMICALS, INC.Inventors: Hiroshi Hoya, Kiminori Noda, Norihide Inoue, Hiroshi Uehara, Eiji Shiba, Masayoshi Yamaguchi, Manabu Kawamoto, Akira Yamashita
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Patent number: 9908983Abstract: Means for solving the problems The thermoplastic resin composition (X1) of the present invention comprises (A1), (B1), (C1), and optionally (D1) below: 1 to 90 wt % of an isotactic polypropylene (A1); 9 to 98 wt % of a propylene/ethylene/?-olefin copolymer (B1) containing 45 to 89 mol % of propylene-derived structural units, 10 to 25 mol % of ethylene-derived structural units, and optionally, 0 to 30 mol % of C4-C20 ?-olefin-derived structural units (a1); 1 to 80 wt % of a styrene-based elastomer (C1); and 0 to 70 wt % of an ethylene/?-olefin copolymer (D1) whose density is in the range of 0.850 to 0.910 g/cm3, wherein (A1)+(B1)+(C1)+(D1)=100 wt %.Type: GrantFiled: November 4, 2015Date of Patent: March 6, 2018Assignee: MITSUI CHEMICALS, INC.Inventors: Hiroshi Hoya, Kiminori Noda, Norihide Inoue, Hiroshi Uehara, Eiji Shiba, Masayoshi Yamaguchi, Manabu Kawamoto, Akira Yamashita
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Publication number: 20160122492Abstract: Means for solving the problems The thermoplastic resin composition (X1) of the present invention comprises (A1), (B1), (C1), and optionally (D1) below: 1 to 90 wt % of an isotactic polypropylene (A1); 9 to 98 wt % of a propylene/ethylene/?-olefin copolymer (B1) containing 45 to 89 mol % of propylene-derived structural units, 10 to 25 mol % of ethylene-derived structural units, and optionally, 0 to 30 mol % of C4-C20 ?-olefin-derived structural units (a1); 1 to 80 wt % of a styrene-based elastomer (C1); and 0 to 70 wt % of an ethylene/?-olefin copolymer (D1) whose density is in the range of 0.850 to 0.910 g/cm3, wherein (A1)+(B1)+(C1)+(D1)=100 wt %.Type: ApplicationFiled: November 4, 2015Publication date: May 5, 2016Applicant: MITSUI CHEMICALS, INC.Inventors: Hiroshi HOYA, Kiminori NODA, Norihide INOUE, Hiroshi UEHARA, Eiji SHIBA, Masayoshi YAMAGUCHI, Manabu KAWAMOTO, Akira YAMASHITA
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Publication number: 20160060443Abstract: Means for solving the problems The thermoplastic resin composition (X1) of the present invention comprises (A1), (B1), (C1), and optionally (D1) below: 1 to 90 wt % of an isotactic polypropylene (A1); 9 to 98 wt % of a propylene/ethylene/?-olefin copolymer (B1) containing 45 to 89 mol % of propylene-derived structural units, 10 to 25 mol % of ethylene-derived structural units, and optionally, 0 to 30 mol % of C4-C20 ?-olefin-derived structural units (a1); 1 to 80 wt % of a styrene-based elastomer (C1); and 0 to 70 wt % of an ethylene/?-olefin copolymer (D1) whose density is in the range of 0.850 to 0.910 g/cm3, wherein (A1)+(B1)+(C1)+(D1)=100 wt %.Type: ApplicationFiled: November 4, 2015Publication date: March 3, 2016Applicant: Mitsui Chemicals, Inc.Inventors: Hiroshi HOYA, Kiminori NODA, Norihide INOUE, Hiroshi UEHARA, Eiji SHIBA, Masayoshi YAMAGUCHI, Manabu KAWAMOTO, Akira YAMASHITA
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Publication number: 20160060407Abstract: Means for solving the problems The thermoplastic resin composition (X1) of the present invention comprises (A1), (B1), (C1), and optionally (D1) below: 1 to 90 wt % of an isotactic polypropylene (A1); 9 to 98 wt % of a propylene/ethylene/?-olefin copolymer (B1) containing 45 to 89 mol % of propylene-derived structural units, 10 to 25 mol % of ethylene-derived structural units, and optionally, 0 to 30 mol % of C4-C20?-olefin-derived structural units (a1); 1 to 80 wt % of a styrene-based elastomer (C1); and 0 to 70 wt % of an ethylene/?-olefin copolymer (D1) whose density is in the range of 0.850 to 0.910 g/cm3, wherein (A1)+(B1)+(C1)+(D1)=100 wt %.Type: ApplicationFiled: November 4, 2015Publication date: March 3, 2016Applicant: MITSUI CHEMICALS, INC.Inventors: Hiroshi HOYA, Kiminori NODA, Norihide INOUE, Hiroshi UEHARA, Eiji SHIBA, Masayoshi YAMAGUCHI, Manabu KAWAMOTO, Akira YAMASHITA
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Patent number: 9217078Abstract: Means for Solving the Problems The thermoplastic resin composition (X1) of the present invention comprises (A1), (B1), (C1), and optionally (D1) below: 1 to 90 wt % of an isotactic polypropylene (A1); 9 to 98 wt % of a propylene/ethylene/?-olefin copolymer (B1) containing 45 to 89 mol % of propylene-derived structural units, 10 to 25 mol % of ethylene-derived structural units, and optionally, 0 to 30 mol % of C4-C20?-olefin-derived structural units (a1); 1 to 80 wt % of a styrene-based elastomer (C1); and 0 to 70 wt % of an ethylene/?-olefin copolymer (D1) whose density is in the range of 0.850 to 0.910 g/cm3, wherein (A1)+(B1)+(C1)+(D1)=100 wt %.Type: GrantFiled: September 14, 2012Date of Patent: December 22, 2015Assignee: MITSUI CHEMICALS, INC.Inventors: Hiroshi Hoya, Kiminori Noda, Norihide Inoue, Hiroshi Uehara, Eiji Shiba, Masayoshi Yamaguchi, Manabu Kawamoto, Akira Yamashita
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Patent number: 8962974Abstract: Means for solving the problems The thermoplastic resin composition (X1) of the present invention comprises (A1), (B1), (C1), and optionally (D1) below: 1 to 90 wt % of an isotactic polypropylene (A1); 9 to 98 wt % of a propylene/ethylene/?-olefin copolymer (B1) containing 45 to 89 mol % of propylene-derived structural units, 10 to 25 mol % of ethylene-derived structural units, and optionally, 0 to 30 mol % of C4-C20 ?-olefin-derived structural units (a1); 1 to 80 wt % of a styrene-based elastomer (C1); and 0 to 70 wt % of an ethylene/?-olefin copolymer (D1) whose density is in the range of 0.850 to 0.910 g/cm3, wherein (A1)+(B1)+(C1)+(D1)=100 wt %.Type: GrantFiled: September 14, 2012Date of Patent: February 24, 2015Assignee: Mitsui Chemicals, Inc.Inventors: Hiroshi Hoya, Kiminori Noda, Norihide Inoue, Hiroshi Uehara, Eiji Shiba, Masayoshi Yamaguchi, Manabu Kawamoto, Akira Yamashita
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Patent number: 8946543Abstract: Means for Solving the Problems The thermoplastic resin composition (X1) of the present invention comprises (A1), (B1), (C1), and optionally (D1) below: 1 to 90 wt % of an isotactic polypropylene (A1); 9 to 98 wt % of a propylene/ethylene/?-olefin copolymer (B1) containing 45 to 89 mol % of propylene-derived structural units, 10 to 25 mol % of ethylene-derived structural units, and optionally, 0 to 30 mol % of C4-C20 ?-olefin-derived structural units (a1); 1 to 80 wt % of a styrene-based elastomer (C1); and 0 to 70 wt % of an ethylene/?-olefin copolymer (D1) whose density is in the range of 0.850 to 0.910 g/cm3, wherein (A1)+(B1)+(C1)+(D1)=100 wt %.Type: GrantFiled: September 14, 2012Date of Patent: February 3, 2015Assignee: Mitsui Chemicals, Inc.Inventors: Hiroshi Hoya, Kiminori Noda, Norihide Inoue, Hiroshi Uehara, Eiji Shiba, Masayoshi Yamaguchi, Manabu Kawamoto, Akira Yamashita
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Patent number: 8772365Abstract: The present invention provides a resin composition capable of providing foams (non-crosslinked and crosslinked foams) which have low specific gravity and low compression set (CS) and are excellent in tensile strength properties, tear strength properties and vibration-damping properties at room temperature to high temperatures, and a foam of the resin composition. The resin composition for foams of the present invention comprises 5 to 95 parts by weight of an ethylene/?-olefin copolymer (A) and 5 to 95 parts by weight of a hydrogenated copolymer (B) obtained by hydrogenating a copolymer comprising a conjugated diene and a vinyl aromatic compound, and is characterized in that the hydrogenated copolymer (B) does not have a glass transition point of not higher than ?10° C. when measured at a frequency of 1 Hz in accordance with JIS-K7198.Type: GrantFiled: May 17, 2006Date of Patent: July 8, 2014Assignee: Mitsui Chemicals, Inc.Inventors: Takayuki Kajihara, Eiji Shiba, Masayoshi Yamaguchi, Kiminori Noda
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Patent number: 8592674Abstract: Means for Solving the Problems The thermoplastic resin composition (X1) of the present invention comprises (A1), (B1), (C1), and optionally (D1) below: 1 to 90 wt % of an isotactic polypropylene (A1); 9 to 98 wt % of a propylene/ethylene/?-olefin copolymer (B1) containing 45 to 89 mol % of propylene-derived structural units, 10 to 25 mol % of ethylene-derived structural units, and optionally, 0 to 30 mol % of C4-C20 ?-olefin-derived structural units (a1); 1 to 80 wt % of a styrene-based elastomer (C1); and 0 to 70 wt % of an ethylene/?-olefin copolymer (D1) whose density is in the range of 0.850 to 0.910 g/cm3, wherein (A1)+(B1)+(C1)+(D1)=100 wt %.Type: GrantFiled: September 14, 2012Date of Patent: November 26, 2013Assignee: Mitsui Chemicals, Inc.Inventors: Hiroshi Hoya, Kiminori Noda, Norihide Inoue, Hiroshi Uehara, Eiji Shiba, Masayoshi Yamaguchi, Manabu Kawamoto, Akira Yamashita
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Publication number: 20130017379Abstract: Means for Solving the Problems The thermoplastic resin composition (X1) of the present invention comprises (A1), (B1), (C1), and optionally (D1) below: 1 to 90 wt % of an isotactic polypropylene (A1); 9 to 98 wt % of a propylene/ethylene/?-olefin copolymer (B1) containing 45 to 89 mol % of propylene-derived structural units, 10 to 25 mol % of ethylene-derived structural units, and optionally, 0 to 30 mol % of C4-C20?-olefin-derived structural units (a1); 1 to 80 wt % of a styrene-based elastomer (C1); and 0 to 70 wt % of an ethylene/?-olefin copolymer (D1) whose density is in the range of 0.850 to 0.910 g/cm3, wherein (A1)+(B1)+(C1)+(D1)=100 wt %.Type: ApplicationFiled: September 14, 2012Publication date: January 17, 2013Inventors: Hiroshi HOYA, Kiminori NODA, Norihide INOUE, Hiroshi UEHARA, Eiji SHIBA, Masayoshi YAMAGUCHI, Manabu KAWAMOTO, Akira YAMASHITA
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Publication number: 20130017351Abstract: Means for solving the problems The thermoplastic resin composition (X1) of the present invention comprises (A1), (B1), (C1), and optionally (D1) below: 1 to 90 wt % of an isotactic polypropylene (A1); 9 to 98 wt % of a propylene/ethylene/?-olefin copolymer (B1) containing 45 to 89 mol % of propylene-derived structural units, 10 to 25 mol % of ethylene-derived structural units, and optionally, 0 to 30 mol % of C4-C20 ?-olefin-derived structural units (a1); 1 to 80 wt % of a styrene-based elastomer (C1); and 0 to 70 wt % of an ethylene/?-olefin copolymer (D1) whose density is in the range of 0.850 to 0.910 g/cm3, wherein (A1)+(B1)+(C1)+(D1)=100 wt %.Type: ApplicationFiled: September 14, 2012Publication date: January 17, 2013Inventors: Hiroshi HOYA, Kiminori Noda, Norihide Inoue, Hiroshi Uehara, Eiji Shiba, Masayoshi Yamaguchi, Manabu Kawamoto, Akira Yamashita
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Publication number: 20130011596Abstract: Means for Solving the Problems The thermoplastic resin composition (X1) of the present invention comprises (A1), (B1), (C1), and optionally (D1) below: 1 to 90 wt % of an isotactic polypropylene (A1); 9 to 98 wt % of a propylene/ethylene/?-olefin copolymer (B1) containing 45 to 89 mol % of propylene-derived structural units, 10 to 25 mol % of ethylene-derived structural units, and optionally, 0 to 30 mol % of C4-C20 ?-olefin-derived structural units (a1); 1 to 80 wt % of a styrene-based elastomer (C1); and 0 to 70 wt % of an ethylene/?-olefin copolymer (D1) whose density is in the range of 0.850 to 0.910 g/cm3, wherein (A1)+(B1)+(C1)+(D1)=100 wt %.Type: ApplicationFiled: September 14, 2012Publication date: January 10, 2013Inventors: Hiroshi HOYA, Kiminori Noda, Norihide Inoue, Hiroshi Uehara, Eiji Shiba, Masayoshi Yamaguchi, Manabu Kawamoto, Akira Yamashita
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Publication number: 20130011649Abstract: Means for solving the problems The thermoplastic resin composition (X1) of the present invention comprises (A1), (B1), (C1), and optionally (D1) below: 1 to 90 wt % of an isotactic polypropylene (A1); 9 to 98 wt % of a propylene/ethylene/?-olefin copolymer (B1) containing 45 to 89 mol % of propylene-derived structural units, 10 to 25 mol % of ethylene-derived structural units, and optionally, 0 to 30 mol % of C4-C20 ?-olefin-derived structural units (a1); 1 to 80 wt % of a styrene-based elastomer (C1); and 0 to 70 wt % of an ethylene/?-olefin copolymer (D1) whose density is in the range of 0.850 to 0.910 g/cm3, wherein (A1)+(B1)+(C1)+(D1)=100 wt %.Type: ApplicationFiled: September 14, 2012Publication date: January 10, 2013Inventors: Hiroshi HOYA, Kiminori NODA, Norihide INOUE, Hiroshi UEHARA, Eiji SHIBA, Masayoshi YAMAGUCHI, Manabu KAWAMOTO, Akira YAMASHITA
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Patent number: 8338697Abstract: The thermoplastic resin composition (X1) of the present invention comprises (A1), (B1), (C1), and optionally (D1) below: 1 to 90 wt % of an isotactic polypropylene (A1); 9 to 98 wt % of a propylene/ethylene/?-olefin copolymer (B1) containing 45 to 89 mol % of propylene-derived structural units, 10 to 25 mol % of ethylene-derived structural units, and optionally, 0 to 30 mol % of C4-C20 ?-olefin-derived structural units (a1); 1 to 80 wt % of a styrene-based elastomer (C1); and 0 to 70 wt % of an ethylene/?-olefin copolymer (D1) whose density is in the range of 0.850 to 0.910 g/cm3, wherein (A1)+(B1)+(C1)+(D1)=100 wt %.Type: GrantFiled: December 21, 2006Date of Patent: December 25, 2012Assignee: Mitsui Chemicals, Inc.Inventors: Hiroshi Hoya, Kiminori Noda, Norihide Inoue, Hiroshi Uehara, Eiji Shiba, Masayoshi Yamaguchi, Manabu Kawamoto, Akira Yamashita
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Publication number: 20090100704Abstract: The present invention provides a resin composition capable of providing foams (non-crosslinked and crosslinked foams) which have low specific gravity and low compression set (CS) and are excellent in tensile strength properties, tear strength properties and vibration-damping properties at room temperature to high temperatures, and a foam of the resin composition. The resin composition for foams of the present invention comprises 5 to 95 parts by weight of an ethylene/?-olefin copolymer (A) and 5 to 95 parts by weight of a hydrogenated copolymer (B) obtained by hydrogenating a copolymer comprising a conjugated diene and a vinyl aromatic compound, and is characterized in that the hydrogenated copolymer (B) does not have a glass transition point of not higher than ?10° C. when measured at a frequency of 1 Hz in accordance with JIS-K7198.Type: ApplicationFiled: May 17, 2006Publication date: April 23, 2009Applicant: Mitsui Chemicals, Inc.Inventors: Takayuki Kajihara, Eiji Shiba, Masayoshi Yamaguchi, Kiminori Noda
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Publication number: 20070251572Abstract: The thermoplastic resin composition (Xi) of the present invention comprises (A1), (B1), (C1), and optionally (D1) below: 1 to 90 wt % of an isotactic polypropylene (A1); 9 to 98 wt % of a propylene/ethylene/?-olefin copolymer (B1) containing 45 to 89 mol% of propylene-derived structural units, 10 to 25 molt of ethylene-derived structural units, and optionally, 0 to 30 mol% of C4-C20 ?-olefin-derived structural units (a1); 1 to 80 wt % of a styrene-based elastomer (C1); and 0 to 70 wt % of an ethylene/?-olefin copolymer (D1) whose density is in the range of 0.850 to 0.910 g/cm3, wherein (A1)+(B1)+(C1)+(D1)=100 wt %.Type: ApplicationFiled: December 21, 2006Publication date: November 1, 2007Inventors: Hiroshi Hoya, Kiminori Noda, Norihide Inoue, Hiroshi Uehara, Eiji Shiba, Masayoshi Yamaguchi, Manabu Kawamoto, Akira Yamashita