Patents by Inventor Kou Tsurugi

Kou Tsurugi 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).

  • Publication number: 20220380585
    Abstract: A propylene polymer composition includes a propylene homopolymer (A) having an intrinsic viscosity [?] measured in a tetralin solvent at 135° C. in the range of 7 to 12 dl/g, a propylene polymer (B) having an intrinsic viscosity [?] in the range of not less than 0.21 dl/g and less than 0.54 dl/g, and having a proportion of a component eluted at a temperature of not more than ?20° C. in TREF in the range of not more than 3.5 mass %, and a propylene polymer (C) having an intrinsic viscosity [?] in the range of not less than 0.54 dl/g and less than 2.6 dl/g, wherein the content of (A) is 0.5 to 47.5 mass %, the content of (B) is 5 to 95 mass % and the content of (C) is 2.5 to 85.5 mass %, based on the total of (A), (B) and (C).
    Type: Application
    Filed: August 7, 2020
    Publication date: December 1, 2022
    Applicants: PRIME POLYMER CO., LTD., MITSUI CHEMICALS, INC.
    Inventors: Ryoko HIROI, Keita ITAKURA, Shino NAITO, Takanori FURUTA, Kou TSURUGI
  • Publication number: 20220145052
    Abstract: A propylene resin composition includes a propylene polymer (A) satisfying requirements (1) to (3) below: (1) having a number average molecular weight (Mn) measured by gel permeation chromatography (GPC) of 5000 to 22000; (2) having a ratio (Mw/Mn) of a weight average molecular weight (Mw) to a number average molecular weight (Mn) measured by gel permeation chromatography (GPC) being 1.2 to 3.5; and (3) having a proportion of a component eluted at a temperature of not more than ?20° C. in temperature rising elution fractionation (TREF) being not more than 3.5 mass %.
    Type: Application
    Filed: March 17, 2020
    Publication date: May 12, 2022
    Applicants: MITSUI CHEMICALS, INC., PRIME POLYMER CO., LTD.
    Inventors: Keita ITAKURA, Katsuhiko KOIKE, Ryoko HIROI, Hiroyuki FUKUSHIMA, Kou TSURUGI, Atsushi SHIBAHARA, Fumiaki NISHINO, Kohei TANAKA, Yasuhiro KAI, Naoya NODA, Kenji MICHIUE, Takanori FURUTA
  • Patent number: 10870715
    Abstract: An object of the invention is to provide a solid polyaluminoxane composition suitably used as a cocatalyst and a catalyst carrier in combination with an olefin oligomerization or polymerization catalyst, without the use of solid inorganic carriers such as silica. The solid polyaluminoxane composition of the invention includes a polyalkylaluminoxane and a trialkylaluminum, and has a solubility in n-hexane at 25° C. of less than 0.50 mol % as measured by a specific method (i), a solubility in toluene at 25° C. of less than 1.0 mol % as measured by a specific method (ii), and a 13 mol % or more molar fraction of alkyl groups derived from the trialkylaluminum moieties relative to the total number of moles of alkyl groups derived from the polyalkylaluminoxane moieties and the alkyl groups derived from the trialkylaluminum moieties as measured with respect to tetrahydrofuran-d8 soluble components by a specific method (iii).
    Type: Grant
    Filed: October 25, 2018
    Date of Patent: December 22, 2020
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Kou Tsurugi, Shiori Hanada, Atsushi Shibahara, Kazumori Kawamura, Fumiaki Nishino, Yasuyuki Harada, Wataru Yamada, Akiko Matsumoto, Isao Hara, Tatsuya Nakamura, Toshihiro Muroto
  • Publication number: 20190062470
    Abstract: An object of the invention is to provide a solid polyaluminoxane composition suitably used as a cocatalyst and a catalyst carrier in combination with an olefin oligomerization or polymerization catalyst, without the use of solid inorganic carriers such as silica. The solid polyaluminoxane composition of the invention includes a polyalkylaluminoxane and a trialkylaluminum, and has a solubility in n-hexane at 25° C. of less than 0.50 mol % as measured by a specific method (i), a solubility in toluene at 25° C. of less than 1.0 mol % as measured by a specific method (ii), and a 13 mol % or more molar fraction of alkyl groups derived from the trialkylaluminum moieties relative to the total number of moles of alkyl groups derived from the polyalkylaluminoxane moieties and the alkyl groups derived from the trialkylaluminum moieties as measured with respect to tetrahydrofuran-d8 soluble components by a specific method (iii).
    Type: Application
    Filed: October 25, 2018
    Publication date: February 28, 2019
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Kou TSURUGI, Shiori HANADA, Atsushi SHIBAHARA, Kazumori KAWAMURA, Fumiaki NISHINO, Yasuyuki HARADA, Wataru YAMADA, Akiko MATSUMOTO, Isao HARA, Tatsuya NAKAMURA, Toshihiro MUROTO
  • Patent number: 10150823
    Abstract: An object of the invention is to provide a solid polyaluminoxane composition suitably used as a cocatalyst and a catalyst carrier in combination with an olefin oligomerization or polymerization catalyst, without the use of solid inorganic carriers such as silica. The solid polyaluminoxane composition of the invention includes a polyalkylaluminoxane and a trialkylaluminum, and has a solubility in n-hexane at 25° C. of less than 0.50 mol % as measured by a specific method (i), a solubility in toluene at 25° C. of less than 1.0 mol % as measured by a specific method (ii), and a 13 mol % or more molar fraction of alkyl groups derived from the trialkylaluminum moieties relative to the total number of moles of alkyl groups derived from the polyalkylaluminoxane moieties and the alkyl groups derived from the trialkylaluminum moieties as measured with respect to tetrahydrofuran-d8 soluble components by a specific method (iii).
    Type: Grant
    Filed: May 5, 2017
    Date of Patent: December 11, 2018
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Kou Tsurugi, Shiori Hanada, Atsushi Shibahara, Kazumori Kawamura, Fumiaki Nishino, Yasuyuki Harada, Wataru Yamada, Akiko Matsumoto, Isao Hara, Tatsuya Nakamura, Toshihiro Muroto
  • Publication number: 20170240664
    Abstract: An object of the invention is to provide a solid polyaluminoxane composition suitably used as a cocatalyst and a catalyst carrier in combination with an olefin oligomerization or polymerization catalyst, without the use of solid inorganic carriers such as silica. The solid polyaluminoxane composition of the invention includes a polyalkylaluminoxane and a trialkylaluminum, and has a solubility in n-hexane at 25° C. of less than 0.50 mol % as measured by a specific method (i), a solubility in toluene at 25° C. of less than 1.0 mol % as measured by a specific method (ii), and a 13 mol % or more molar fraction of alkyl groups derived from the trialkylaluminum moieties relative to the total number of moles of alkyl groups derived from the polyalkylaluminoxane moieties and the alkyl groups derived from the trialkylaluminum moieties as measured with respect to tetrahydrofuran-d8 soluble components by a specific method (iii).
    Type: Application
    Filed: May 5, 2017
    Publication date: August 24, 2017
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Kou TSURUGI, Shiori HANADA, Atsushi SHIBAHARA, Kazumori KAWAMURA, Fumiaki NISHINO, Yasuyuki HARADA, Wataru YAMADA, Akiko MATSUMOTO, Isao HARA, Tatsuya NAKAMURA, Toshihiro MUROTO
  • Patent number: 9676879
    Abstract: An object of the invention is to provide a solid polyaluminoxane composition suitably used as a cocatalyst and a catalyst carrier in combination with an olefin oligomerization or polymerization catalyst, without the use of solid inorganic carriers such as silica. The solid polyaluminoxane composition of the invention includes a polyalkylaluminoxane and a trialkylaluminum, and has a solubility in n-hexane at 25° C. of less than 0.50 mol % as measured by a specific method (i), a solubility in toluene at 25° C. of less than 1.0 mol % as measured by a specific method (ii), and a 13 mol % or more molar fraction of alkyl groups derived from the trialkylaluminum moieties relative to the total number of moles of alkyl groups derived from the polyalkylaluminoxane moieties and the alkyl groups derived from the trialkylaluminum moieties as measured with respect to tetrahydrofuran-d8 soluble components by a specific method (iii).
    Type: Grant
    Filed: February 7, 2014
    Date of Patent: June 13, 2017
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Kou Tsurugi, Shiori Hanada, Atsushi Shibahara, Kazumori Kawamura, Fumiaki Nishino, Yasuyuki Harada, Wataru Yamada, Akiko Matsumoto, Isao Hara, Tatsuya Nakamura, Toshihiro Muroto
  • Publication number: 20150376306
    Abstract: An object of the invention is to provide a solid polyaluminoxane composition suitably used as a cocatalyst and a catalyst carrier in combination with an olefin oligomerization or polymerization catalyst, without the use of solid inorganic carriers such as silica. The solid polyaluminoxane composition of the invention includes a polyalkylaluminoxane and a trialkylaluminum, and has a solubility in n-hexane at 25° C. of less than 0.50 mol % as measured by a specific method (i), a solubility in toluene at 25° C. of less than 1.0 mol % as measured by a specific method (ii), and a 13 mol % or more molar fraction of alkyl groups derived from the trialkylaluminum moieties relative to the total number of moles of alkyl groups derived from the polyalkylaluminoxane moieties and the alkyl groups derived from the trialkylaluminum moieties as measured with respect to tetrahydrofuran-d8 soluble components by a specific method (iii).
    Type: Application
    Filed: February 7, 2014
    Publication date: December 31, 2015
    Applicant: Mitsui Chemicals, Inc.
    Inventors: Kou TSURUGI, Siori HANADA, Atsushi SHIBAHARA, Kazumori KAWAMURA, Fumiaki NISHINO, Yasuyuki HARADA, Wataru YAMADA, Akiko MATSUMOTO, Isao HARA, Tatsuya NAKAMURA, Toshihiro MUROTO
  • Patent number: 8809490
    Abstract: A method for producing a solution containing at least an unsaturated carboxylic acid-modified vinyl alcohol polymer is characterized by reacting a vinyl alcohol polymer and an unsaturated carboxylic acid compound in the presence of an acid catalyst soluble in the reaction system or a solid acid catalyst, and a gas barrier film is obtained by using the same. An example thereof is a method for producing a solution (A) containing an unsaturated carboxylic acid-modified vinyl alcohol polymer (b), the method comprising following two steps of: (1) a reaction step in which the unsaturated carboxylic acid-modified vinyl alcohol polymer (b) is formed by reacting a vinyl alcohol polymer and an unsaturated carboxylic acid compound (a) in the presence of an acid catalyst soluble in the reaction system; and (2) an ion exchange step in which at least the acid catalyst of acidic compounds is removed by an anion exchange resin.
    Type: Grant
    Filed: May 31, 2007
    Date of Patent: August 19, 2014
    Assignee: Tohcello Co., Ltd.
    Inventors: Kou Tsurugi, Yoshihisa Inoue, Isao Hara, Hiroyoshi Watanabe, Tomoyoshi Hakamata, Akira Nomoto, Osamu Nakamura
  • Patent number: 8258361
    Abstract: The invention provides transition metal complex compounds, high-activity olefin oligomerization catalysts containing the compounds, and olefin oligomerization processes using the catalysts. A transition metal complex compound [A] according to the invention is represented by Formula (I) or Formula (I?) below. An olefin oligomerization catalyst includes the transition metal complex compound [A]. In an olefin oligomerization process of the invention, an olefin is oligomerized in the presence of the catalyst.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: September 4, 2012
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Yasuhiko Suzuki, Shinsuke Kinoshita, Atsushi Shibahara, Naritoshi Yoshimura, Isao Hara, Tetsuya Hamada, Kazumori Kawamura, Kou Tsurugi, Yasunori Saito, Seiichi Ishii, Yasushi Nakayama, Naoto Matsukawa, Susumu Murata
  • Patent number: 8097345
    Abstract: Disclosed is an excellent gas barrier laminate whose gas-barrier property has little dependency on temperature and which hardly causes fracture even when the laminate is stretched. A gas barrier film comprising a polymer (A) of an unsaturated carboxylic acid compound monovalent metal salt (a), wherein the polymer (A) contains a modified vinyl alcohol polymer (B); a gas barrier laminate comprising a base layer and the gas barrier film formed on at least one surface of the base layer; and a method for production of a gas barrier laminate comprising the steps of: coating a solution of an unsaturated carboxylic acid compound monovalent metal salt (a) having a polymerization degree less than 20 on at least one surface of a base layer, wherein the solution contains a modified vinyl alcohol polymer (B); performing the polymerization to form a layer of the polymer (A) of the unsaturated carboxylic acid compound monovalent metal salt (a) containing the modified vinyl alcohol polymer (B).
    Type: Grant
    Filed: August 30, 2006
    Date of Patent: January 17, 2012
    Assignee: Tohcello Co., Ltd.
    Inventors: Tomoyoshi Hakamata, Akira Nomoto, Osamu Nakamura, Yoshihisa Inoue, Kou Tsurugi, Nobuhiro Tanabe, Yoshihiro Yamamoto
  • Publication number: 20110082325
    Abstract: The invention provides transition metal complex compounds, high-activity olefin oligomerization catalysts containing the compounds, and olefin oligomerization processes using the catalysts. A transition metal complex compound [A] according to the invention is represented by Formula (I) or Formula (I?) below. An olefin oligomerization catalyst includes the transition metal complex compound [A]. In an olefin oligomerization process of the invention, an olefin is oligomerized in the presence of the catalyst.
    Type: Application
    Filed: June 27, 2008
    Publication date: April 7, 2011
    Inventors: Yasuhiko Suzuki, Shinsuke Kinoshita, Atsushi Shibahara, Naritoshi Yoshimura, Isao Hara, Tetsuya Hamada, Kazumori Kawamura, Kou Tsurugi, Yasunori Saito, Seiichi Ishii, Yasushi Nakayama, Naoto Matsukawa, Susumu Murata
  • Publication number: 20090324836
    Abstract: The present invention provides an industrially advantageous method for producing an unsaturated carboxylic acid-modified vinyl alcohol polymer, and a gas barrier film obtained by using the same.
    Type: Application
    Filed: May 31, 2007
    Publication date: December 31, 2009
    Applicant: TOHCELLO CO., LTD.
    Inventors: Kou Tsurugi, Yoshihisa Inoue, Isao Hara, Hiroyoshi Watanabe, Tomoyoshi Hakamata, Akira Nomoto, Osamu Nakamura
  • Publication number: 20090269592
    Abstract: Disclosed is an excellent gas barrier laminate whose gas-barrier property has little dependency on temperature and which hardly causes fracture even when the laminate is stretched. A gas barrier film comprising a polymer (A) of an unsaturated carboxylic acid compound monovalent metal salt (a), wherein the polymer (A) contains a modified vinyl alcohol polymer (B); a gas barrier laminate comprising a base layer and the gas barrier film formed on at least one surface of the base layer; and a method for production of a gas barrier laminate comprising the steps of: coating a solution of an unsaturated carboxylic acid compound monovalent metal salt (a) having a polymerization degree less than 20 on at least one surface of a base layer, wherein the solution contains a modified vinyl alcohol polymer (B); performing the polymerizaton to form a layer of the polymer (A) of the unsaturated carboxylic acid compound monovalent metal salt (a) containing the modified vinyl alcohol polymer (B).
    Type: Application
    Filed: August 30, 2006
    Publication date: October 29, 2009
    Applicant: TOHCELLO CO., LTD.
    Inventors: Tomoyoshi Hakamata, Akira Nomoto, Osamu Nakamura, Yoshihisa Inoue, Kou Tsurugi, Nobuhiro Tanabe, Yoshihiro Yamamoto