Patents by Inventor Takaaki Hattori
Takaaki Hattori 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: 11655360Abstract: A gas-barrier resin (A) having an oxygen permeability coefficient of 1.0×10?14 (cm3·cm/cm2·s·Pa) or less; and a copolymer (B) containing monomer structural units represented by the formula (1), the formula (2), and the formula (3): where: R1 represents a hydrogen atom or a methyl group; R2 represents a hydrocarbon group having 1 to 20 carbon atoms that may be substituted with a halogen atom, a hydroxy group, an alkoxy group, or an amino group; 1, m, and n represent numerical values representing molar proportions of the respective monomer structural units, and n may represent 0; and p represents an integer of from 1 to 4, wherein a ratio of a mass of the copolymer (B) to a total mass of the gas-barrier resin (A) and the copolymer (B) is from 1 mass % to 40 mass %.Type: GrantFiled: July 17, 2018Date of Patent: May 23, 2023Assignees: SHOWA DENKO K.K., JAPAN POLYETHYLENE CORPORATIONInventors: Junichi Kuroda, Yoshikuni Okumura, Shinya Hayashi, Masahiro Uematsu, Takaaki Hattori, Yuichiro Yasukawa
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Publication number: 20210147669Abstract: A gas-barrier resin (A) having an oxygen permeability coefficient of 1.0×10?14 (cm3·cm/cm2·s·Pa) or less; and a copolymer (B) containing monomer structural units represented by the formula (1), the formula (2), and the formula (3): where: R1 represents a hydrogen atom or a methyl group; R2 represents a hydrocarbon group having 1 to 20 carbon atoms that may be substituted with a halogen atom, a hydroxy group, an alkoxy group, or an amino group; 1, m, and n represent numerical values representing molar proportions of the respective monomer structural units, and n may represent 0; and p represents an integer of from 1 to 4, wherein a ratio of a mass of the copolymer (B) to a total mass of the gas-barrier resin (A) and the copolymer (B) is from 1 mass % to 40 mass %.Type: ApplicationFiled: July 17, 2018Publication date: May 20, 2021Applicants: SHOWA DENKO K.K., JAPAN POLYETHYLENE CORPORATIONInventors: Junichi KURODA, Yoshikuni OKUMURA, Shinya HAYASHI, Masahiro UEMATSU, Takaaki HATTORI, Yuichiro YASUKAWA
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Patent number: 10717855Abstract: An object of the present invention is to provide a novel production method of ethylene-based ionomer having excellent mechanical properties and heat resistance which exhibits remarkably excellent breaking elongation, breaking stress, and strain hardening, and has a high melting point. The present invention relates to a production method of an ethylene-based ionomer including a heating conversion step of heating a specific ethylene/unsaturated carboxylic acid ester copolymer and converting the ester group in the copolymer into a metal-containing carboxylate containing a metal ion of Group 1, 2, or 12 of the periodic table.Type: GrantFiled: October 15, 2015Date of Patent: July 21, 2020Assignees: JAPAN POLYETHYLENE CORPORATION, JAPAN POLYPROPYLENE CORPORATIONInventors: Takaaki Hattori, Toshiaki Egashira, Masahiro Uematsu
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Publication number: 20170306134Abstract: An object of the present invention is to provide a novel production method of ethylene-based ionomer having excellent mechanical properties and heat resistance which exhibits remarkably excellent breaking elongation, breaking stress, and strain hardening, and has a high melting point. The present invention relates to a production method of an ethylene-based ionomer including a heating conversion step of heating a specific ethylene/unsaturated carboxylic acid ester copolymer and converting the ester group in the copolymer into a metal-containing carboxylate containing a metal ion of Group 1, 2, or 12 of the periodic table.Type: ApplicationFiled: October 15, 2015Publication date: October 26, 2017Applicants: Japan Polyethylene Corporation, Japan Polypropylene CorporationInventors: Takaaki HATTORI, Toshiaki EGASHIRA, Masahiro UEMATSU
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Patent number: 9193809Abstract: A polyethylene based resin exhibiting excellent moldability and durability and having an excellent balance between impact resistance and stiffness; and a hollow plastic molded article using the foregoing resin, which exhibits excellent moldability, durability and barrier properties and has an excellent balance between impact resistance and stiffness, are provided. The polyethylene based resin satisfies the following requirements (1) to (4): (1) a high-load melt flow rate (HLMFR) is from 1 to 100 g/10 min; (2) a density is from 0.940 to 0.960 g/cm3; (3) a strain hardening parameter ?max of elongational viscosity is from 1.05 to 1.50; and (4) a rupture time in a full notch tensile creep test and a density satisfy the following relational expression (A): log(rupture time)??355×(density)+337.6(A).Type: GrantFiled: June 26, 2009Date of Patent: November 24, 2015Assignee: JAPAN POLYETHYLENE CORPORATIONInventors: Yuuichi Kuzuba, Takashi Monoi, Ritsuya Matsumoto, Kouichi Ogawa, Satoshi Kanazawa, Takaaki Hattori
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Publication number: 20130280462Abstract: The polyethylene of the invention is polymerized using a chromium catalyst, and has a weight average molecular weight (Mw) of 30,000 or more at the maximum value in a branching degree distribution curve that shows a molecular weight dependency of short chain branches having 4 or more carbon atoms.Type: ApplicationFiled: December 22, 2011Publication date: October 24, 2013Applicant: JAPAN POLYEHTYLENE CORPORATIONInventors: Yuuichi Kuzuba, Takashi Monoi, Satoshi Kanazawa, Kouichi Ogawa, Takaaki Hattori, Keiichi Yoshimoto
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Publication number: 20120058288Abstract: A polyethylene based resin exhibiting excellent moldability and durability and having an excellent balance between impact resistance and stiffness; and a hollow plastic molded article using the foregoing resin, which exhibits excellent moldability, durability and barrier properties and has an excellent balance between impact resistance and stiffness, are provided. The polyethylene based resin satisfies the following requirements (1) to (4): (1) a high-load melt flow rate (HLMFR) is from 1 to 100 g/10 min; (2) a density is from 0.940 to 0.960 g/cm3; (3) a strain hardening parameter ?max of elongational viscosity is from 1.05 to 1.50; and (4) a rupture time in a full notch tensile creep test and a density satisfy the following relational expression (A): log (rupture time)??355×(density)+337.6 (A).Type: ApplicationFiled: June 26, 2009Publication date: March 8, 2012Applicant: JAPAN POLYETHYLENE CORPORATIONInventors: Yuuichi Kuzuba, Takashi Monoi, Ritsuya Matsumoto, Kouichi Ogawa, Satoshi Kanazawa, Takaaki Hattori
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Patent number: 6423808Abstract: A laminate containing a polyolefin resin composition containing ethylene-&agr;-olefin copolymer having: (A) a density d of 0.86 to 0.96 g/cm3; (B) a melt flow rate MFR of 0.01 to 200 g/10 min; (C) a molecular weight distribution Mw/Mn of 1.5 to 4.5; (D) a composition distribution parameter Cb of 1.08 to 2.00; and (E) an orthodichlorobenzene-soluble content X (wt %), at 25° C. a density of d (g/cm3) and a melt flow rate MFR (g/10 min) satisfying that: (i) when the density (d) and the melt flow rate MFR satisfy relationship (I): d−0.008×log MFR≧0.93 (I) the orthodichlorobenzene-soluble content X satisfies relationship (II): X<2.0 (II) (ii) when the density d and the melt flow rate MFR satisfy relationship (III): d−0.008×log MFR<0.93 (II) the orthodichlorobenzene-soluble content X satisfies relationship (IV): X<9.8×103×(0.9300−d+0.008×log MFR)2+2.Type: GrantFiled: August 22, 2000Date of Patent: July 23, 2002Assignee: Japan Polyolefins Co., Ltd.Inventors: Hideo Watanabe, Masahiko Sato, Masaaki Ikeda, Takaaki Hattori, Yoshihiro Hatakeyama, Naoki Miwa, Tatsuyuki Kamiya, Hisao Sakuma, Yuka Umeshima
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Patent number: 6162871Abstract: A polyolefin resin composition containing an ethylene-.alpha.-olefin copolymer having: (A) a density d of 0.86 to 0.96 g/cm.sup.3 ; (B) a melt flow rate MFR of 0.01 to 200 g/10 min; (C) a molecular weight distribution Mw/Mn of 1.5 to 4.5; (D) a composition distribution parameter Cb of 1.08 to 2.00; and (E) an orthodichlorobenzene-soluble content X (wt %), at 25.degree. C. a density of d (g/cm.sup.3) and a melt flow rate MFR (wt %) satisfying that: (i) when the density (d) and the melt flow rate MFR satisfy relationship (I):d-0.008.times.logMFR.gtoreq.0.93 (I)the orthodichlorobenzene-soluble content X satisfies relationship (II):X<2.0 (II)(ii) when the density d and the melt flow rate MFR satisfy relationship (III):d-0.008.times.logMFR<0.93 (III)the orthodichlorobenzene-soluble content X satisfies relationship (IV):X<9.8.times.10.sup.3 .times.(0.9300-d+0.008.times.logMFR).sup.2 +2.Type: GrantFiled: October 5, 1998Date of Patent: December 19, 2000Assignee: Nippon Petrochemical Co., Ltd.Inventors: Hideo Watanabe, Masahiko Sato, Masaaki Ikeda, Takaaki Hattori, Yoshihiro Hatakeyama, Naoki Miwa, Tatsuyuki Kamiya, Hisao Sakuma, Yuka Umeshima
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Patent number: 5874513Abstract: An ethylene-.alpha.-olefin copolymer having: (A) a density d of 0.86 to 0.96 g/cm.sup.3 ; (B) a melt flow rate MFR of 0.01 to 200 g/10 min; (C) a molecular weight distribution Mw/Mn of 1.5 to 4.5; (D) a composition distribution parameter Cb of 1.08 to 2.00; and (E) an orthodichlorobenzene-soluble content X (wt %), at 25.degree. C. a density of d (g/cm.sup.3) and a melt flow rate MFR (g/10 min) satisfying that: (i) when the density (d) and the melt flow rate MFR satisfy relationship (I):d-0.008.times.logMFR.gtoreq.0.93 (I)the orthodichlorobenzene-soluble content X satisfies relationship (II):X<2.0 (II)(ii) when the density d and the melt flow rate MFR satisfy relationship (III):d-0.008.times.logMFR<0.93 (III)the orthodichlorobenzene-soluble content X satisfies relationship (IV):X<9.8.times.10.sup.3 .times.(0.9300-d+0.008.times.logMFR).sup.2 +2.Type: GrantFiled: March 28, 1996Date of Patent: February 23, 1999Assignee: Nippon Petrochemicals Co., Ltd.Inventors: Hideo Watanabe, Masahiko Sato, Masaaki Ikeda, Takaaki Hattori, Yoshihiro Hatakeyama, Naoki Miwa, Tatsuyuki Kamiya, Hisao Sakuma, Yuka Umeshima
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Patent number: 5189106Abstract: A polyethylene composition which has excellent flow characteristics and mechanical properties, especially low temperature mechanical properties as well as thermal stability, elasticity and workability for molding. The polyethylene composition comprises 20 to 80 wt. % of an ethylene-.alpha.-olefin copolymer of higher molecular weight having (a) intrinsic viscosity (.eta..sub.1) of 1.2 to 9.0 dl/g, (b) density (d.sub.1) of 0.890 to 0.935 g/cm.sup.3 (c) a specific areal ratio calculated with an elution temperature-eluate volume curve in elution fractionation, and (d) a specific quantity of the content which is soluble in 25.degree. C. o-dichlorobenzene, and 80 to 20 wt. % of ethylene homopolymer or ethylene-.alpha.-olefin copolymer of lower molecular weight having (e) intrinsic viscosity (.eta..sub.2) of 0.2 to 1.6 dl/g, (f) density (d.sub.2) of 0.890 to 0.980 g/cm.sup.3 and, wherein the above (.eta..sub.1) is larger than (.eta..sub.2), and the prepared composition has an intrinsic viscosity (.eta.) of 0.Type: GrantFiled: December 30, 1991Date of Patent: February 23, 1993Assignee: Nippon Petrochemicals Company, LimitedInventors: Toshifumi Morimoto, Takaaki Hattori, Noboru Ikegami, Hirofumi Nishibu, Toshiyuki Miyauchi, Kunimichi Kubo