Patents by Inventor Arifumi MATSUMURA

Arifumi MATSUMURA 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: 11472932
    Abstract: A method of producing a heat-resistant chlorine-containing crosslinked resin formed body, formed from: Step (a) of melt-mixing, to a base resin containing a chlorinated polyethylene and a polyvinyl chloride and a plasticizer, an organic peroxide, an inorganic filler, and a silane coupling agent, at a specific ratio, at a temperature equal to or higher than a decomposition temperature of the organic peroxide; Step (b) of mixing a silane masterbatch obtained in Step (a) and a silanol condensation catalyst; and Step (c) of crosslinking by bringing a formed body obtained by Step (b) into contact with water; wherein, in Step (a), from 5 to 55 mass % of the plasticizer is contained in 100 mass % of the base resin to be used in the reaction with the silane coupling agent; the formed body produced therefrom; a silane masterbatch and a mixture thereof; and a heat resistant product.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: October 18, 2022
    Assignee: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Masaki Nishiguchi, Arifumi Matsumura
  • Patent number: 11242453
    Abstract: A production method comprising: (a) a step of melt-mixing a base resin containing a chlorinated polyethylene; an organic peroxide, an inorganic filler, and a silane coupling agent, in specific ratios, at a temperature equal to or higher than a decomposition temperature of the organic peroxide, to prepare a silane master batch; (b) a step of mixing the silane master batch obtained in the step (a) with a silanol condensation catalyst, and then forming the resultant mixture; and conducting at least one of the melt-mixing in the step (a) and the mixing in the step (b) is performed in the coexistence of a chloroprene rubber or a polyvinyl chloride; a heat-resistant chlorine-containing crosslinked resin formed body produced by the method, a silane master batch, a mixture and formed body thereof, and a heat-resistant product.
    Type: Grant
    Filed: August 9, 2018
    Date of Patent: February 8, 2022
    Assignee: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Masaki Nishiguchi, Arifumi Matsumura, Hidekazu Hara
  • Publication number: 20220013252
    Abstract: A composite cable includes a sheath surrounding an outer surface of a core at least including a plurality of thick electric wires each having a resin layer on an outer circumference of a conductor, and a plurality of thin electric wires each having a resin layer on an outer circumference of a conductor, in which the sheath includes a resin composition including base resin containing at least one type of ethylene rubber and styrene elastomer at 10 to 50 mass %.
    Type: Application
    Filed: September 24, 2021
    Publication date: January 13, 2022
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Takanori YAMAZAKI, Arifumi MATSUMURA, Koichi MIZUNO, Masaki NISHIGUCHI
  • Patent number: 11192984
    Abstract: A method for producing a heat-resistant crosslinked fluorocarbon rubber formed body, comprising: (a) a step of melt-kneading 0.003 to 0.5 part by mass of an organic peroxide, 0.5 to 400 parts by mass of an inorganic filler, and more than 2.0 parts by mass and 15.0 parts by mass or less of a silane coupling agent, with respect to 100 parts by mass of a base rubber containing a fluorocarbon rubber, at a temperature equal to or higher than a decomposition temperature of the organic peroxide, to prepare a silane master batch; a heat-resistant crosslinked fluorocarbon rubber formed body obtained by the method, a silane master batch, a mixture and a formed body thereof, and a heat-resistant product.
    Type: Grant
    Filed: August 9, 2018
    Date of Patent: December 7, 2021
    Assignee: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Masaki Nishiguchi, Arifumi Matsumura, Hidekazu Hara
  • Patent number: 10988694
    Abstract: A flame retardant resin composition containing from 30 to 300 parts by mass of a boehmite and an aluminum hydroxide as a total with respect to 100 parts by mass of the resin, wherein a content ratio of the boehmite and the aluminum hydroxide [content of boehmite:content of aluminum hydroxide] is from 85:15 to 15:85; a formed part; and a wiring material each using the same.
    Type: Grant
    Filed: July 24, 2019
    Date of Patent: April 27, 2021
    Assignee: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Masaki Nishiguchi, Arifumi Matsumura
  • Publication number: 20200291216
    Abstract: A method of producing a heat-resistant crosslinked fluororubber formed body, including: step (1) melt-mixing, with respect to 100 mass parts of base rubber containing 60 to 99 mass % of fluororubber and 1 to 40 mass % of ethylene-based copolymer resin modified with unsaturated carboxylic acid, 0.003 to 0.5 mass parts of organic peroxide, 0.5 to 400 mass parts of inorganic filler, 2 to 15 mass parts of silane coupling agent, and silanol condensation catalyst, in which the step (1) includes, step (a) melt-mixing all or part of the base rubber, the organic peroxide, the inorganic filler and the silane coupling agent at a temperature equal to or higher than a decomposition temperature of the organic peroxide, and step (b) melt-mixing a remainder of the base rubber, and the silanol condensation catalyst, to melt-mix the thus-modified ethylene-based copolymer resin in at least one of the steps (a) and (b).
    Type: Application
    Filed: May 28, 2020
    Publication date: September 17, 2020
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Hiroki CHIBA, Masaki NISHIGUCHI, Arifumi MATSUMURA
  • Publication number: 20200291151
    Abstract: A method of producing a heat-resistant crosslinked fluororubber formed body, including a step (1) of melt-mixing, with respect to 100 mass parts of base rubber containing 40 to 98 mass % of fluororubber and 2 to 40 mass % of ethylene/tetrafluoroethylene copolymer resin, 0.003 to 0.5 mass parts of organic peroxide, 0.5 to 400 mass parts of inorganic filler, 2 to 15 mass parts of a specific silane coupling agent, and silanol condensation catalyst, and including a step (a) of melt-mixing a part of the base rubber, the organic peroxide, the inorganic filler and the silane coupling agent at a temperature equal to or higher than a decomposition temperature of said organic peroxide, and a step (b) of melt-mixing a remainder of the base rubber, and the silanol condensation catalyst, and the fluororubber and the ethylene/tetrafluoroethylene copolymer resin are melt-mixed in any of the steps (a) and (b).
    Type: Application
    Filed: May 28, 2020
    Publication date: September 17, 2020
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Hiroki CHIBA, Masaki NISHIGUCHI, Arifumi MATSUMURA
  • Patent number: 10703894
    Abstract: A method that has a step (a) of melt-kneading 0.003 to 0.3 part by mass of an organic peroxide, 0.5 to 400 parts by mass of an inorganic filler, and more than 2 parts by mass and 15.0 parts by mass or less of a silane coupling agent, with respect to 100 parts by mass of a resin containing a halogen-containing resin, at a temperature equal to or higher than a decomposition temperature of the organic peroxide, to prepare a silane master batch; a heat-resistant crosslinked resin formed body obtained by the method, a silane master batch, a mixture and a formed body thereof, and a heat-resistant product.
    Type: Grant
    Filed: August 9, 2018
    Date of Patent: July 7, 2020
    Assignee: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Masaki Nishiguchi, Hidekazu Hara, Arifumi Matsumura
  • Publication number: 20200017642
    Abstract: A method of producing a heat-resistant chlorine-containing crosslinked resin formed body, formed from: Step (a) of melt-mixing, to a base resin containing a chlorinated polyethylene and a polyvinyl chloride and a plasticizer, an organic peroxide, an inorganic filler, and a silane coupling agent, at a specific ratio, at a temperature equal to or higher than a decomposition temperature of the organic peroxide; Step (b) of mixing a silane masterbatch obtained in Step (a) and a silanol condensation catalyst; and Step (c) of crosslinking by bringing a formed body obtained by Step (b) into contact with water; wherein, in Step (a), from 5 to 55 mass % of the plasticizer is contained in 100 mass % of the base resin to be used in the reaction with the silane coupling agent; the formed body produced therefrom; a silane masterbatch and a mixture thereof; and a heat resistant product.
    Type: Application
    Filed: September 25, 2019
    Publication date: January 16, 2020
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Masaki NISHIGUCHI, Arifumi MATSUMURA
  • Publication number: 20190345391
    Abstract: A flame retardant resin composition containing from 30 to 300 parts by mass of a boehmite and an aluminum hydroxide as a total with respect to 100 parts by mass of the resin, wherein a content ratio of the boehmite and the aluminum hydroxide [content of boehmite:content of aluminum hydroxide] is from 85:15 to 15:85; a formed part; and a wiring material each using the same.
    Type: Application
    Filed: July 24, 2019
    Publication date: November 14, 2019
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Masaki NISHIGUCHI, Arifumi MATSUMURA
  • Patent number: 10438718
    Abstract: A method comprising at least a step of preparing a silane master batch by melt-kneading a base resin (RB) containing a non-aromatic organic oil, an organic peroxide, an inorganic filler, and a silane coupling agent, in specific mass ratio, and a step of mixing the silane master batch and a silanol condensation catalyst or a silane master batch; a heat-resistant silane crosslinked resin molded body and a heat-resistant silane crosslinkable resin composition prepared by the method, and a silane master batch and a heat-resistant product.
    Type: Grant
    Filed: March 25, 2016
    Date of Patent: October 8, 2019
    Assignee: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Arifumi Matsumura, Masaki Nishiguchi
  • Patent number: 10304584
    Abstract: A method comprising at least a step (1) of preparing a silane master batch by melt-kneading, all or part of a polyolefin resin, an organic peroxide, an inorganic filler containing a metal hydrate and a metal carbonate, and a silane coupling agent, at a temperature equal to or higher than the decomposition temperature of the organic peroxide, and a step (3) of mixing the silane master batch and a silanol condensation catalyst or a catalyst master batch; a heat-resistant silane crosslinked resin molded body and a heat-resistant silane crosslinkable resin composition prepared by the method, and a silane master batch and a heat-resistant product.
    Type: Grant
    Filed: August 17, 2018
    Date of Patent: May 28, 2019
    Assignee: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Arifumi Matsumura, Masaki Nishiguchi
  • Patent number: 10287405
    Abstract: A production method, containing the step of: mixing 0.02 to 0.6 parts by mass of an organic peroxide, 0.2 to 300 parts by mass of an inorganic filler, 2 to 15.0 parts by mass of a silane coupling agent, and a silanol condensation catalyst, based on 100 parts by mass of a polyolefin-based resin, in which the inorganic filler has an X value specified by Formula (I) satisfies 5 to 1050, X=?A/B??Formula (I) wherein, ?A denotes a total amount of a product of a BET specific surface area (m2/g) of the inorganic filler and a blending amount of the inorganic filler, and B denotes a blending amount of the silane coupling agent; and a crosslinkable resin composition and a crosslinked resin molded body produced by the production method; and a silane master batch and a molded article.
    Type: Grant
    Filed: July 5, 2018
    Date of Patent: May 14, 2019
    Assignee: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Masaki Nishiguchi, Arifumi Matsumura
  • Patent number: 10155854
    Abstract: A method comprising at least (a) a step of preparing a silane master batch by melt-kneading, to 100 parts by mass of a base resin (RB) containing a non-aromatic organic oil and ethylene rubber, an organic peroxide of from 0.01 to 0.6 parts by mass, an inorganic filler of from 10 to 400 parts by mass, and a silane coupling agent of from 1 to 15.0 parts by mass, at a temperature equal to or higher than the decomposition temperature of the organic peroxide; a heat-resistant silane crosslinked resin molded body and a heat-resistant silane crosslinkable resin composition prepared by the method, and a silane master batch and a heat-resistant product.
    Type: Grant
    Filed: March 25, 2016
    Date of Patent: December 18, 2018
    Assignee: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Masaki Nishiguchi, Arifumi Matsumura
  • Publication number: 20180358147
    Abstract: A method comprising at least a step (1) of preparing a silane master batch by melt-kneading, all or part of a polyolefin resin, an organic peroxide, an inorganic filler containing a metal hydrate and a metal carbonate, and a silane coupling agent, at a temperature equal to or higher than the decomposition temperature of the organic peroxide, and a step (3) of mixing the silane master batch and a silanol condensation catalyst or a catalyst master batch; a heat-resistant silane crosslinked resin molded body and a heat-resistant silane crosslinkable resin composition prepared by the method, and a silane master batch and a heat-resistant product.
    Type: Application
    Filed: August 17, 2018
    Publication date: December 13, 2018
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Arifumi MATSUMURA, Masaki NISHIGUCHI
  • Publication number: 20180346664
    Abstract: A method for producing a heat-resistant crosslinked fluorocarbon rubber formed body, comprising: (a) a step of melt-kneading 0.003 to 0.5 part by mass of an organic peroxide, 0.5 to 400 parts by mass of an inorganic filler, and more than 2.0 parts by mass and 15.0 parts by mass or less of a silane coupling agent, with respect to 100 parts by mass of a base rubber containing a fluorocarbon rubber, at a temperature equal to or higher than a decomposition temperature of the organic peroxide, to prepare a silane master batch; a heat-resistant crosslinked fluorocarbon rubber formed body obtained by the method, a silane master batch, a mixture and a formed body thereof, and a heat-resistant product.
    Type: Application
    Filed: August 9, 2018
    Publication date: December 6, 2018
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Masaki NISHIGUCHI, Arifumi MATSUMURA, Hidekazu HARA
  • Publication number: 20180346700
    Abstract: A production method comprising: (a) a step of melt-mixing a base resin containing a chlorinated polyethylene; an organic peroxide, an inorganic filler, and a silane coupling agent, in specific ratios, at a temperature equal to or higher than a decomposition temperature of the organic peroxide, to prepare a silane master batch; (b) a step of mixing the silane master batch obtained in the step (a) with a silanol condensation catalyst, and then forming the resultant mixture; and conducting at least one of the melt-mixing in the step (a) and the mixing in the step (b) is performed in the coexistence of a chloroprene rubber or a polyvinyl chloride; a heat-resistant chlorine-containing crosslinked resin formed body produced by the method, a silane master batch, a mixture and formed body thereof, and a heat-resistant product.
    Type: Application
    Filed: August 9, 2018
    Publication date: December 6, 2018
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Masaki Nishiguchi, Arifumi Matsumura, Hidekazu Hara
  • Publication number: 20180346702
    Abstract: A method that has a step (a) of melt-kneading 0.003 to 0.3 part by mass of an organic peroxide, 0.5 to 400 parts by mass of an inorganic filler, and more than 2 parts by mass and 15.0 parts by mass or less of a silane coupling agent, with respect to 100 parts by mass of a resin containing a halogen-containing resin, at a temperature equal to or higher than a decomposition temperature of the organic peroxide, to prepare a silane master batch; a heat-resistant crosslinked resin formed body obtained by the method, a silane master batch, a mixture and a formed body thereof, and a heat-resistant product.
    Type: Application
    Filed: August 9, 2018
    Publication date: December 6, 2018
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Masaki NISHIGUCHI, Hidekazu HARA, Arifumi MATSUMURA
  • Publication number: 20180312646
    Abstract: A production method, containing the step of: mixing 0.02 to 0.6 parts by mass of an organic peroxide, 0.2 to 300 parts by mass of an inorganic filler, 2 to 15.0 parts by mass of a silane coupling agent, and a silanol condensation catalyst, based on 100 parts by mass of a polyolefin-based resin, in which the inorganic filler has an X value specified by Formula (I) satisfies 5 to 1050, X=?A/B ??Formula (I) wherein, ?A denotes a total amount of a product of a BET specific surface area (m2/g) of the inorganic filler and a blending amount of the inorganic filler, and B denotes a blending amount of the silane coupling agent; and a crosslinkable resin composition and a crosslinked resin molded body produced by the production method; and a silane master batch and a molded article.
    Type: Application
    Filed: July 5, 2018
    Publication date: November 1, 2018
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Masaki NISHIGUCHI, Arifumi MATSUMURA
  • Patent number: 10083776
    Abstract: A method comprising at least a step (1) of preparing a silane master batch by melt-kneading, all or part of a polyolefin resin, an organic peroxide, an inorganic filler containing a metal hydrate and a metal carbonate, and a silane coupling agent, at a temperature equal to or higher than the decomposition temperature of the organic peroxide, and a step (3) of mixing the silane master batch and a silanol condensation catalyst or a catalyst master batch; a heat-resistant silane crosslinked resin molded body and a heat-resistant silane crosslinkable resin composition prepared by the method, and a silane master batch and a heat-resistant product.
    Type: Grant
    Filed: March 25, 2016
    Date of Patent: September 25, 2018
    Assignee: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Arifumi Matsumura, Masaki Nishiguchi