Patents by Inventor Shigeru Aida

Shigeru Aida 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: 11104107
    Abstract: To provide a fluororesin laminate in which a layer of a fluorinated copolymer and a layer of a propylene polymer excellent in heat resistance are strongly attached. A laminate comprising a layer which contains a fluorinated copolymer having an adhesive functional group and having monomer unit based on tetrafluoroethylene and monomer units based on ethylene, and a layer which contains a propylene polymer having an adhesive functional group.
    Type: Grant
    Filed: September 16, 2019
    Date of Patent: August 31, 2021
    Assignee: AGC INC.
    Inventors: Shigeru Aida, Toru Sasaki
  • Patent number: 10882936
    Abstract: To provide a copolymer capable of producing a molded article excellent in strength at a high temperature. A copolymer comprising ethylene units, tetrafluoroethylene units and other monomer units, wherein to the sum of ethylene units and tetrafluoroethylene units, the ethylene units are from 49 to 40 mol % and the tetrafluoroethylene units are from 51 to 60 mol %; to all units in the copolymer, other monomer units are from 2.6 to 6.0 mol %; the melting point is at least 230° C.; and the melt flow rate is from 1 to 15 g/10 min.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: January 5, 2021
    Assignee: AGC Inc.
    Inventors: Shigeru Aida, Daisuke Taguchi
  • Publication number: 20200157288
    Abstract: Provided is a fluorine-containing copolymer composition capable of forming a uniform coating. The composition comprises a fluorine-containing copolymer having units derived from tetrafluoroethylene, units derived from ethylene, and 0.4 to 1.0 mol % of at least one functional group selected from the group consisting of a carbonyl group-containing group, an acid anhydride group, a carboxy group, a hydroxy group, an epoxy group, an amide group, an amino group, and an isocyanate group, and an aliphatic compound having 6 to 10 carbon atoms having one carbonyl group.
    Type: Application
    Filed: January 23, 2020
    Publication date: May 21, 2020
    Applicant: AGC Inc.
    Inventors: Shigeru AIDA, Kaori ABE, Shintaro FUKUNAGA
  • Publication number: 20200101645
    Abstract: To provide a method whereby it is possible to easily produce a bonded article in which a member containing a fluorinated polymer and another member are firmly bonded. This method is a method for producing a bonded article in which a member A containing a fluorinated polymer having an adhesive functional group and a member B containing a resin material, are bonded, wherein in a state where at least a portion of the member A (a coating layer 24 and a sheath layer 26 of an electric wire 20) is disposed in the cavity 46 of a mold 40 for injection molding, the resin material is injected into the cavity 46 and solidified to form the member B (connector housing).
    Type: Application
    Filed: December 2, 2019
    Publication date: April 2, 2020
    Applicant: AGC Inc.
    Inventors: Shigeru Aida, Takashi Sato
  • Patent number: 10607749
    Abstract: To provide an ETFE copolymer and a wire coating resin material capable of forming a coating layer which is excellent in stress cracking resistance under a high temperature and which has a high heat resistance temperature, and an electric wire having a coating layer which is excellent in stress cracking resistance under a high temperature and which has a high heat resistance temperature. A copolymer comprising structural units derived from ethylene, structural units derived from tetrafluoroethylene, and structural units derived from a third monomer, wherein in an elution curve obtained by a temperature rising elution fractionation method with respect to the copolymer, a ratio (L/H) of a proportion (L: area %) of components with elution temperatures of from 190 to 200° C. to a proportion (H: area %) of components with elution temperatures of at least 205° C.
    Type: Grant
    Filed: November 6, 2017
    Date of Patent: March 31, 2020
    Assignee: AGC Inc.
    Inventors: Shigeru Aida, Yoji Nakajima, Toshifumi Kakiuchi, Masakazu Ataku
  • Publication number: 20200009840
    Abstract: To provide a fluororesin laminate in which a layer of a fluorinated copolymer and a layer of a propylene polymer excellent in heat resistance are strongly attached. A laminate comprising a layer which contains a fluorinated copolymer having an adhesive functional group and having monomer unit based on tetrafluoroethylene and monomer units based on ethylene, and a layer which contains a propylene polymer having an adhesive functional group.
    Type: Application
    Filed: September 16, 2019
    Publication date: January 9, 2020
    Applicant: AGC Inc.
    Inventors: Shigeru AIDA, Toru SASAKI
  • Publication number: 20180237566
    Abstract: To provide a copolymer capable of producing a molded article excellent in strength at a high temperature. A copolymer comprising ethylene units, tetrafluoroethylene units and other monomer units, wherein to the sum of ethylene units and tetrafluoroethylene units, the ethylene units are from 49 to 40 mol % and the tetrafluoroethylene units are from 51 to 60 mol %; to all units in the copolymer, other monomer units are from 2.6 to 6.0 mol %; the melting point is at least 230° C.; and the melt flow rate is from 1 to 15 g/10 min.
    Type: Application
    Filed: April 23, 2018
    Publication date: August 23, 2018
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Shigeru AIDA, Daisuke TAGUCHI
  • Patent number: 10005888
    Abstract: To provide a fluororubber molded article which is inexpensive and excellent in fuel barrier properties against an alcohol-containing fuel. A fluororubber molded article obtained by molding and crosslinking a cross-linkable composition comprising a fluoroelastomer (A) and a fluoroelastomer (B), wherein the fluoroelastomer (A) is a copolymer comprising tetrafluoroethylene units and perfluorovinyl ether units represented by CF2?CF—O—Rf (Rf is a C1-20 perfluoroalkyl group or a C2-20 perfluoroalkyl group having an etheric oxygen atom between carbon atoms), the fluoroelastomer (B) is a copolymer comprising tetrafluoroethylene units, propylene units and vinylidene fluoride units, and the mass ratio of (A)/(B) is from 99/1 to 30/70.
    Type: Grant
    Filed: September 8, 2016
    Date of Patent: June 26, 2018
    Assignee: Asahi Glass Company, Limited
    Inventors: Shigeru Aida, Takeshi Yamada, Keisuke Yagi
  • Publication number: 20180142051
    Abstract: To provide a polymerization initiator composition for a fluorinated polymer which will not destroy ozone layer and which has less influence over polymerization of a monomer for a fluorinated polymer, and a method for producing a fluorinated polymer by which a fluorinated polymer having a sufficient molecular weight can be obtained. An initiator composition for a fluorinated polymer, which comprises an organic peroxide, and a saturated hydrocarbon compound having at least one tertiary or quaternary carbon atom, and a method for producing a fluorinated polymer using the polymerization initiator composition, and a polymerization method comprising a step of recovering a polymerization solvent and a step of separating the saturated hydrocarbon compound from the recovered polymerization solvent.
    Type: Application
    Filed: January 22, 2018
    Publication date: May 24, 2018
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Shigeru AIDA, Keisuke Yagi, Satoshi Otsugu
  • Publication number: 20180061522
    Abstract: To provide an ETFE copolymer and a wire coating resin material capable of forming a coating layer which is excellent in stress cracking resistance under a high temperature and which has a high heat resistance temperature, and an electric wire having a coating layer which is excellent in stress cracking resistance under a high temperature and which has a high heat resistance temperature. A copolymer comprising structural units derived from ethylene, structural units derived from tetrafluoroethylene, and structural units derived from a third monomer, wherein in an elution curve obtained by a temperature rising elution fractionation method with respect to the copolymer, a ratio (L/H) of a proportion (L: area %) of components with elution temperatures of from 190 to 200° C. to a proportion (H: area %) of components with elution temperatures of at least 205° C.
    Type: Application
    Filed: November 6, 2017
    Publication date: March 1, 2018
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Shigeru AIDA, Yoji Nakajima, Toshifumi Kakiuchi, Masakazu Ataku
  • Patent number: 9790163
    Abstract: To provide a method for recovering an acid of an anionic fluorinated emulsifier with a high yield from a basic ion exchange resin having a nonionic surfactant physically adsorbed thereon and having the anionic fluorinated emulsifier adsorbed thereon. A method for eluting and recovering an acid of an anionic fluorinated emulsifier from a basic ion exchange resin having a nonionic surfactant physically adsorbed thereon and having the anionic fluorinated emulsifier adsorbed thereon, which comprises a step (1) of bringing the basic ion exchange resin into contact with a water-soluble organic solvent and a step (2) of recovering the acid of the anionic fluorinated emulsifier from the basic ion exchange resin from which the ionic surfactant is eluted in the step (1).
    Type: Grant
    Filed: September 13, 2016
    Date of Patent: October 17, 2017
    Assignee: Asahi Glass Company, Limited
    Inventors: Masahiro Takazawa, Shigeru Aida
  • Patent number: 9725542
    Abstract: Provided is an effective process for producing a fluorinated polymer excellent in adhesion, by using a polymerization medium having a low ozone layer destruction potential. The process includes polymerizing a monomer mixture comprising a fluorinated monomer and a polar functional group containing monomer (excluding one having a fluorine atom) in a polymerization medium that contains a medium compound represented by CmH2m+1?xFx—O—CnH2n+1?yFy, m is an integer of from 1 to 6, n is an integer of from 1 to 6, x is from 0 to (2m+1), y is from 0 to 2n, and (x+y) is at least 1), and wherein a solution obtained by dissolving the polar functional group-containing monomer in the polymerization medium is continuously or intermittently added to a polymerization reaction system.
    Type: Grant
    Filed: November 14, 2016
    Date of Patent: August 8, 2017
    Assignee: Asahi Glass Company, Limited
    Inventors: Shigeru Aida, Daisuke Taguchi
  • Patent number: 9682370
    Abstract: Provided is a process for producing a fluorinated copolymer which is capable of providing an ion exchange membrane which can suppress a decrease in current efficiency by impurities in an aqueous alkali chloride solution as a raw material on electrolysis of the alkali chloride aqueous solution. Also provided is a process for producing a fluorinated copolymer that comprises washing a fluorinated copolymer comprising a fluorinated monomer having a carboxylic acid type functional group and a fluorinated olefin, with a washing solvent containing a fluorinated solvent at a temperature of at least 40° C. and at most a boiling point of the washing solvent.
    Type: Grant
    Filed: November 15, 2013
    Date of Patent: June 20, 2017
    Assignee: Asahi Glass Company, Limited
    Inventors: Shintaro Fukunaga, Yukiko Hattori, Kazuo Umemura, Shigeru Aida, Atsushi Tsuji, Toshinori Tomita
  • Publication number: 20170152332
    Abstract: To provide a fluorinated elastomer from which it is possible to produce a crosslinked article excellent in cold resistance and excellent in mechanical strength; a fluorinated elastomer composition containing said elastomer; and a fluorinated elastomer crosslinked article obtained by molding and crosslinking said composition. The fluorinated elastomer comprises units (A) based on vinylidene fluoride and units (B) based on a perfluorovinyl ether represented by CF2?CF—O—Rf, and has iodine atoms at main chain terminals, wherein the molar ratio [(A)/(B)] of units (A) to units (B) is from 88/12 to 50/50. In the formula, Rf is a C1-20 perfluoroalkyl group having a branched structure, or a C2-20 perfluoroalkyl group having a branched structure and also having an etheric oxygen atom between carbon atoms.
    Type: Application
    Filed: February 14, 2017
    Publication date: June 1, 2017
    Applicant: Asahi Glass Company, Limited
    Inventors: Shigeru AIDA, Daisuke TAGUCHI, Keisuke YAGI
  • Patent number: 9624329
    Abstract: A process for producing a fluorinated copolymer includes polymerizing a fluorinated monomer having a carboxylic acid functional group or a sulfonic acid functional group and a fluorinated olefin by a solution polymerization method in a polymerization medium to obtain a mixture containing a fluorinated copolymer, an unreacted monomer and the polymerization medium. The mixture is continuously or intermittently transferred to an evaporation vessel provided with a stirrer and heating the mixture with stirring in the evaporation vessel to evaporate and recover the unreacted monomer and the polymerization medium.
    Type: Grant
    Filed: December 6, 2013
    Date of Patent: April 18, 2017
    Assignee: Asahi Glass Company, Limited
    Inventors: Shigeru Aida, Toshinori Tomita, Toshinori Eto, Kazuo Umemura, Atsushi Tsuji
  • Publication number: 20170088651
    Abstract: To provide a powder coating material to form a coating film excellent in adhesion to a metal substrate and excellent in heat resistance, and an ethylene/tetrafluoroethylene copolymer contained therein. An ethylene/tetrafluoroethylene copolymer in which the content of chlorine atoms covalently bonded to any carbon atoms in the copolymer is from 100 to 500 mass ppm. A method for producing the ethylene/tetrafluoroethylene copolymer in which all or some of the chlorine atoms are introduced by using a chain transfer agent having a chlorine atom. A powder coating material comprising the ethylene/tetrafluoroethylene copolymer. A molded article having a coating film formed by the powder coating material, on a surface of a metal substrate.
    Type: Application
    Filed: December 12, 2016
    Publication date: March 30, 2017
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Shigeru AIDA, Daisuke Taguchi
  • Patent number: 9604180
    Abstract: To provide a fluorinated copolymer which is capable of providing an ion exchange membrane having little adverse effect due to impurities in an alkali chloride aqueous solution on electrolysis of the alkali chloride aqueous solution. To use a fluorinated copolymer of a fluorinated monomer having a carboxylic acid type functional group with a fluorinated olefin, wherein the proportion of components having a common logarithm (log M) of a molecular weight M being from 2.0 to 3.5 is at most 10 mass % per 100 mass % of components having a common logarithm (log M) of a molecular weight M being at least 2.0, contained in a CClF2CF2CClFH soluble content.
    Type: Grant
    Filed: November 18, 2013
    Date of Patent: March 28, 2017
    Assignee: Asahi Glass Company, Limited
    Inventors: Yukiko Hattori, Shintaro Fukunaga, Kazuo Umemura, Shigeru Aida, Atsushi Tsuji, Toshinori Tomita
  • Publication number: 20170058065
    Abstract: To provide an effective process for producing a fluorinated polymer excellent in adhesion, by using a polymerization medium having a low ozone layer destruction potential. A process for producing a fluorinated polymer, which comprises polymerizing a monomer mixture comprising a fluorinated monomer and a polar functional group-containing monomer (excluding one having a fluorine atom) in a polymerization medium, wherein the polymerization medium contains a medium compound represented by CmH2m+1?xFx—O—CnH2n+1?yFy (wherein m is an integer of from 1 to 6, n is an integer of from 1 to 6, x is from 0 to (2m+1), y is from 0 to 2n, and (x+y) is at least 1), and wherein a solution obtained by dissolving the polar functional group-containing monomer in the polymerization medium is continuously or intermittently added to a polymerization reaction system.
    Type: Application
    Filed: November 14, 2016
    Publication date: March 2, 2017
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Shigeru AIDA, Daisuke Taguchi
  • Patent number: 9550717
    Abstract: A method for recovering an anionic fluorinated emulsifier comprises contacting a strongly basic ion exchange resin having an anionic fluorinated emulsifier adsorbed thereon to an aqueous inorganic acid solution and an organic solvent comprising a nitrile group. The anionic fluorinated emulsifier is eluted from the strongly basic ion exchange resin, and a liquid phase comprising an acid of the anionic fluorinated emulsifier is obtained. An acid of the anionic fluorinated emulsifier is recovered from the liquid phase. The strongly basic ion exchange resin and the liquid phase are preferably separated, after the aqueous inorganic acid solution and the organic solvent are contacted to the strongly basic ion exchange resin, and before the acid of the anionic fluorinated emulsifier is recovered from the liquid phase.
    Type: Grant
    Filed: July 8, 2015
    Date of Patent: January 24, 2017
    Assignee: Asahi Glass Company, Limited
    Inventor: Shigeru Aida
  • Publication number: 20160376411
    Abstract: To provide a fluororubber molded article which is inexpensive and excellent in fuel barrier properties against an alcohol-containing fuel. A fluororubber molded article obtained by molding and crosslinking a cross-linkable composition comprising a fluoroelastomer (A) and a fluoroelastomer (B), wherein the fluoroelastomer (A) is a copolymer comprising tetrafluoroethylene units and perfluorovinyl ether units represented by CF2?CF—O—Rf (Rf is a C1-20 perfluoroalkyl group or a C2-20 perfluoroalkyl group having an etheric oxygen atom between carbon atoms), the fluoroelastomer (B) is a copolymer comprising tetrafluoroethylene units, propylene units and vinylidene fluoride units, and the mass ratio of (A)/(B) is from 99/1 to 30/70.
    Type: Application
    Filed: September 8, 2016
    Publication date: December 29, 2016
    Applicant: Asahi Glass Company, Limited
    Inventors: Shigeru Aida, Takeshi Yamada, Keisuke Yagi