Patents by Inventor Shogo Hagiwara

Shogo Hagiwara 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).

  • Patent number: 10844252
    Abstract: A latex composition shows storage stability and spray coating characteristics and gives a soft adhesive layer after drying and a one-pack type aqueous adhesive. The latex composition includes a chloroprene-based polymer latex (A) containing a chloroprene-based polymer in an amount of 50 to 85 mass % as solid matter and an acrylic polymer latex (B) having a glass transition temperature of ?52 to ?9° C. and containing an acrylic polymer containing a sodium alkylbenzenesulfonate having a structure represented by the Chemical Formula (1) or a sodium alkyl diphenyl ether disulfonate in an amount of 15 to 50 mass % as solid matter, in a total amount of 100 parts by mass, and additionally at least one pH regulator (C) selected from boric acid, ammonium sulfate, and amino acids having an isoelectric point of 5.5 to 6.5 in an amount of 3 to 13 parts by mass as solid matter.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: November 24, 2020
    Assignee: DENKA COMPANY LIMITED
    Inventors: Gaito Kiyofuji, Masao Onozuka, Manabu Mizushima, Shogo Hagiwara, Hironori Konishi, Daisuke Shimiya, Kazuhiro Kote
  • Publication number: 20200223961
    Abstract: Provide is a polymer having a narrow molecular weight distribution by living radical polymerization. A polymer manufacturing method comprising a step of performing living radical polymerization using 0.005 to 0.5 parts by mass of an oxygen radical scavenger per 100 parts by mass of a radical polymerizable monomer.
    Type: Application
    Filed: July 27, 2018
    Publication date: July 16, 2020
    Applicant: DENKA COMPANY LIMITED
    Inventors: Kosuke FUJIMOTO, Uichiro YAMAGISHI, Shogo HAGIWARA
  • Publication number: 20200207900
    Abstract: Disclosed is a block copolymer including one or more blocks of an acrylate polymer and one or more blocks of a chloroprene polymer, wherein the number average molecular weight of the block copolymer is 110,000 or more, the number average molecular weight of the block of a chloroprene polymer is 80,000 or more in total, and the block copolymer has a functional group with a structure represented by the following chemical formula (1) or (2): wherein in the chemical formula (1), R1 represents hydrogen, chlorine, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted aryl group or a substituted, or unsubstituted heterocyclyl group.
    Type: Application
    Filed: July 31, 2018
    Publication date: July 2, 2020
    Applicant: DENKA COMPANY LIMITED
    Inventors: Yuhei ISHIGAKI, Suguru ONUKI, Shogo HAGIWARA, Uichiro YAMAGISHI
  • Publication number: 20200199260
    Abstract: To provide a statistical copolymer containing a chloroprene monomer unit and an unsaturated nitrile monomer unit which has a satisfactory oil resistance. A method for producing a statistical copolymer containing a chloroprene monomer unit and an unsaturated nitrile monomer unit includes a step for conducting continuous addition or 10 cycles or more of intermittent portionwise addition of the chloroprene monomer after initiation of a polymerization reaction is provided. A rubber composition using a statistical copolymer according to the invention or a vulcanized molded article containing the rubber composition is excellent in terms of oil resistance, mechanical strength, compression set at a low temperature and flex fatigue resistance.
    Type: Application
    Filed: May 11, 2018
    Publication date: June 25, 2020
    Inventors: Wataru NISHINO, Suguru ONUKI, Kosuke FUJIMOTO, Yuhei ISHIGAKI, Shogo HAGIWARA, Uichiro YAMAGISHI
  • Publication number: 20200190374
    Abstract: Provided is a chloroprene rubber latex adhesive composition superior in initial adhesive strength and normal adhesive strength and also in thermal creep resistance with adherend. A chloroprene rubber latex adhesive composition includes a carboxy-modified chloroprene-based copolymer latex (A) containing a copolymer of chloroprene monomer and an ethylenic unsaturated carboxylic acid and a polyvinylalcohol, a chloroprene-based polymer latex (B) containing a chloroprene homopolymer or a copolymer of chloroprene monomer and other monomer and a rosin acid metal salt and a chlorinated polyolefin resin emulsion (C), wherein the content ratio of the carboxy-modified chloroprene-based copolymer latex (A) to the chloroprene-based polymer latex (B) is 80:20 to 20:80 as solid matter.
    Type: Application
    Filed: August 30, 2017
    Publication date: June 18, 2020
    Inventors: Masao ONOZUKA, Gaito KIYOFUJI, Shogo HAGIWARA
  • Publication number: 20200165421
    Abstract: Provided is a chloroprene-based polymer having an industrially applicable sufficient molecular weight and capable of obtaining a vulcanized rubber excellent in durability and fatigue endurance and an adhesive excellent in layer separation resistance. A chloroprene-based polymer having a number average molecular weight Mn of 150000 to 300000 and comprising a functional group of a structure represented by the general formula (1) or (2) below: (wherein in the general formula (1), R1 shows hydrogen, chlorine, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclyl group.
    Type: Application
    Filed: July 20, 2018
    Publication date: May 28, 2020
    Applicant: DENKA COMPANY LIMITED
    Inventors: Yuhei ISHIGAKI, Shogo HAGIWARA, Uichiro YAMAGISHI, Suguru ONUKI, Kosuke FUJIMOTO, Wataru NISHINO
  • Publication number: 20190389994
    Abstract: To provide a block copolymer that includes an aromatic vinyl compound polymer and a chloroprene polymer, has a number average molecular weight of 100,000 or more, is preferred for a rubber composition and an adhesive composition, and is suitable for industrial production. A block copolymer includes at least one aromatic vinyl compound polymer block and at least one chloroprene polymer block, has a functional group with a structure represented by Chemical Formula (1) or (2), and has a number average molecular weight of 100,000 or more. The chloroprene polymer block has a number average molecular weight of 80,000 or more in total.
    Type: Application
    Filed: March 29, 2018
    Publication date: December 26, 2019
    Inventors: Wataru NISHINO, Yuhei ISHIGAKI, Takashi AIZAWA, Shogo HAGIWARA, Uichiro YAMAGISHI
  • Publication number: 20190309195
    Abstract: A latex composition gives favorable initial adhesive strength after short drying period, shows storage stability and spray coating characteristics and gives a soft adhesive layer after drying and a one-pack type aqueous adhesive. The latex composition includes a chloroprene-based polymer latex (A) containing a chloroprene-based polymer in an amount of 50 to 85 mass % as solid matter and an acrylic polymer latex (B) having a glass transition temperature of ?52 to ?9° C. and containing an acrylic polymer containing a sodium alkylbenzenesulfonate having a structure represented by the Chemical Formula (1) in an amount of 15 to 50 mass % as solid matter, in a total amount of 100 parts by mass, and additionally at least one pH regulator (C) selected from boric acid, ammonium sulfate, and amino acids having an isoelectric point of 5.5 to 6.5 in an amount of 3 to 13 parts by mass as solid matter.
    Type: Application
    Filed: June 29, 2017
    Publication date: October 10, 2019
    Inventors: Gaito KIYOFUJI, Masao ONOZUKA, Manabu MIZUSHIMA, Shogo HAGIWARA, Hironori KONISHI, Daisuke SHIMIYA, Kazuhiro KOTE
  • Patent number: 10086593
    Abstract: Provided are a laminate body, a cross-linked product, and a molded member superior in interlayer adhesiveness. An acrylic elastomer layer 11 is prepared from an acrylic elastomer composition containing an epoxy group-containing acrylic elastomer as major component, an onium salt in an amount of 1 to 5 parts by mass and a polyol compound in an amount of 1 to 8 parts by mass with respect to 100 parts by mass of the acrylic elastomer, and a fluorine-based elastomer layer 12 is prepared from a fluorine-based elastomer composition containing a polyol crosslinking agent. The acrylic elastomer layer 11 and the fluorine-based elastomer layer 12 are laminated, to give a laminate body 1. The laminate body 1 is cross-linked, to give a cross-linked product or a molded member.
    Type: Grant
    Filed: August 29, 2012
    Date of Patent: October 2, 2018
    Assignee: DENKA COMPANY LIMITED
    Inventors: Takashi Kawasaki, Shogo Hagiwara, Toshiaki Miyauchi
  • Patent number: 9372651
    Abstract: When it is detected that a file has been stored in a hot folder, an apparatus stands by for a predetermined period of time not to process the file based on settings associated with the hot folder. When the predetermined period of time elapses, the apparatus processes the file based on the settings associated with the hot folder.
    Type: Grant
    Filed: March 23, 2015
    Date of Patent: June 21, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Shogo Hagiwara, Yosuke Ito, Yuji Kojima
  • Patent number: 9227380
    Abstract: Provided is a laminate having elastomer layers tightly bonded to each other. The laminate according to the present invention 1 has an acrylic elastomer layer 11 and a fluorine elastomer layer 12 that are bonded to each other. The acrylic elastomer layer 11 is made of an acrylic elastomer composition having an epoxy group-containing acrylic elastomer and an onium salt added and the fluorine elastomer layer 12 is made of a fluorine elastomer composition having a fluorine elastomer and a polyol crosslinking agent added. In the laminate 1, the elastomer layers are bonded tightly to each other even without any surface treatment.
    Type: Grant
    Filed: February 28, 2011
    Date of Patent: January 5, 2016
    Assignee: DENKA COMPANY LIMITED
    Inventors: Takashi Kawasaki, Takashi Sunada, Shogo Hagiwara, Yasushi Abe, Toshiaki Miyauchi
  • Publication number: 20150193177
    Abstract: When it is detected that a file has been stored in a hot folder, an apparatus stands by for a predetermined period of time not to process the file based on settings associated with the hot folder. When the predetermined period of time elapses, the apparatus processes the file based on the settings associated with the hot folder.
    Type: Application
    Filed: March 23, 2015
    Publication date: July 9, 2015
    Inventors: Shogo Hagiwara, Yosuke Ito, Yuji Kojima
  • Patent number: 9013738
    Abstract: When it is detected that a file has been stored in a hot folder, an apparatus stands by for a predetermined period of time not to process the file based on settings associated with the hot folder. When the predetermined period of time elapses, the apparatus processes the file based on the settings associated with the hot folder.
    Type: Grant
    Filed: December 12, 2011
    Date of Patent: April 21, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shogo Hagiwara, Yosuke Ito, Yuji Kojima
  • Publication number: 20140227471
    Abstract: Provided are a laminate body, a cross-linked product, and a molded member superior in interlayer adhesiveness. An acrylic elastomer layer 11 is prepared from an acrylic elastomer composition containing an epoxy group-containing acrylic elastomer as major component, an onium salt in an amount of 1 to 5 parts by mass and a polyol compound in an amount of 1 to 8 parts by mass with respect to 100 parts by mass of the acrylic elastomer, and a fluorine-based elastomer layer 12 is prepared from a fluorine-based elastomer composition containing a polyol crosslinking agent. The acrylic elastomer layer 11 and the fluorine-based elastomer layer 12 are laminated, to give a laminate body 1. The laminate body 1 is cross-linked, to give a cross-linked product or a molded member.
    Type: Application
    Filed: August 29, 2012
    Publication date: August 14, 2014
    Applicant: DENKI KAGAKU KOGYO KABUSHIKI KAISHA
    Inventors: Takashi Kawasaki, Shogo Hagiwara, Toshiaki Miyauchi
  • Publication number: 20130295209
    Abstract: Provided is a tire bladder of an acrylic rubber composition which is superior in processing safety and mechanical characteristics and further exhibits high elongation in a high temperature atmosphere. A tire bladder of an acrylic rubber composition comprising: 100 parts by mass of an acrylic rubber containing 94.5 to 99.5 mass % of an alkyl (meth)acrylate-derived structural unit and 0.5 to 3 mass % of a monoalkyl maleate and/or monoalkoxyalkyl maleate-derived structural unit; 30 to 200 parts by mass of a carbon black having an arithmetic average particle diameter, as determined according to JIS-Z8901, of 20 to 30 nm and a DBP oil absorption of 70 to 130 ml/100 g; 0.1 to 5 parts by mass of an imidazole compound as antioxidant and 0.1 to 10 parts by mass of a polyamine compound as vulcanizing agent.
    Type: Application
    Filed: January 17, 2012
    Publication date: November 7, 2013
    Applicant: DENKI KAGAKU KOGYO KABUSHIKI KAISHA
    Inventors: Satoru Ikari, Yasushi Abe, Shogo Hagiwara
  • Publication number: 20130095328
    Abstract: The laminate according to the present invention 1 has an acrylic elastomer layer 11 and a fluorine elastomer layer 12 that are bonded to each other. The acrylic elastomer layer 11 is made of an acrylic elastomer composition having an epoxy group-containing acrylic elastomer and an onium salt added and the fluorine elastomer layer 12 is made of a fluorine elastomer composition having a fluorine elastomer and a polyol crosslinking agent added. In the laminate 1, the elastomer layers are bonded tightly to each other even without any surface treatment.
    Type: Application
    Filed: February 28, 2011
    Publication date: April 18, 2013
    Applicant: DENKI KAGAKU KOGYO KABUSHIKI KAISHA
    Inventors: Takashi Kawasaki, Takashi Sunada, Shogo Hagiwara, Yasushi Abe, Toshiaki Miyauchi
  • Patent number: 8383220
    Abstract: To provide an acrylic rubber composition having an excellent heat resistance, especially an excellent balance between the residual ratio of the tensile strength and the residual ratio of the elongation after heat aging, when formed into a vulcanized product, and a hose article, a sealing article and a rubber vibration insulator using the acrylic rubber composition. An acrylic rubber composition containing an acrylic rubber obtainable by copolymerizing 100 parts by mass of an alkyl acrylate with from 10 to 100 parts by mass of an alkyl methacrylate and from 0.5 to 4 parts by mass of a crosslinkable monomer. Here, the alkyl methacrylate is preferably at least one compound selected from the group consisting of methyl methacrylate, ethyl methacrylate and n-butyl methacrylate, and the alkyl acrylate is preferably at least one compound selected from the group consisting of methyl acrylate, ethyl acrylate and n-butyl acrylate.
    Type: Grant
    Filed: February 4, 2009
    Date of Patent: February 26, 2013
    Assignee: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Takashi Kawasaki, Kazuhiro Kobayashi, Tsutomu Kobari, Daisuke Shimiya, Shogo Hagiwara
  • Publication number: 20120162708
    Abstract: When it is detected that a file has been stored in a hot folder, an apparatus stands by for a predetermined period of time not to process the file based on settings associated with the hot folder. When the predetermined period of time elapses, the apparatus processes the file based on the settings associated with the hot folder.
    Type: Application
    Filed: December 12, 2011
    Publication date: June 28, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Shogo Hagiwara, Yosuke Ito, Yuji Kojima
  • Publication number: 20100323141
    Abstract: To provide an acrylic rubber composition having an excellent heat resistance, especially an excellent balance between the residual ratio of the tensile strength and the residual ratio of the elongation after heat aging, when formed into a vulcanized product, and a hose article, a sealing article and a rubber vibration insulator using the acrylic rubber composition. An acrylic rubber composition containing an acrylic rubber obtainable by copolymerizing 100 parts by mass of an alkyl acrylate with from 10 to 100 parts by mass of an alkyl methacrylate and from 0.5 to 4 parts by mass of a crosslinkable monomer. Here, the alkyl methacrylate is preferably at least one compound selected from the group consisting of methyl methacrylate, ethyl methacrylate and n-butyl methacrylate, and the alkyl acrylate is preferably at least one compound selected from the group consisting of methyl acrylate, ethyl acrylate and n-butyl acrylate.
    Type: Application
    Filed: February 4, 2009
    Publication date: December 23, 2010
    Applicant: DENKI KAGAKU KOGYO KABUSHIKI KAISHA
    Inventors: Takashi Kawasaki, Kazuhiro Kobayashi, Tsutomu Kobari, Daisuke Shimiya, Shogo Hagiwara
  • Patent number: 7056986
    Abstract: An ethylene-acrylic copolymer rubber composition, which comprises (A) a carboxyl group-containing ethylene-acrylic copolymer rubber, (B) at least one monoamine compound selected from the group consisting of a primary amine, a secondary amine and a tertiary amine, (C) a guanidine type compound, and (D) at least one of an aromatic diamine compound expressed by the following structural formula (1), H2N—Ph-M-Ph—NH2: ??structural formula (1) wherein M is O, S, SO2, CONH, or O—R—O in which R is Ph, Ph—Ph, Ph—SO2—Ph, (CH2)m, (CH2)C(CH3)2(CH2), or Ph—C(CX3)2—Ph, and m=3–5, X=H or F and Ph=benzene ring.
    Type: Grant
    Filed: April 29, 2004
    Date of Patent: June 6, 2006
    Assignee: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Yasuhiro Kanba, Yasushi Abe, Shogo Hagiwara, Masao Koga