Patents by Inventor Yukiko Hattori

Yukiko 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).

  • Patent number: 11306167
    Abstract: To provide a fluorinated elastic copolymer excellent in adhesion, processability, mechanical properties, heat resistance and chemical resistance. A fluorinated elastic copolymer having units based on a monomer (a), units based on a monomer (b) and optionally units based on a monomer (c), which has an iodine atom bonded to a terminal of a molecular chain and the unit based on the monomer (b) adjacent to the iodine atom, and which has a proportion of the units based on the monomer (b) of from 0.09 to 2.0 mol % to all units. Monomer (a): monomer selected from the group consisting of tetrafluoroethylene, hexafluoropropylene, vinylidene fluoride, chlorotrifluoroethylene, a perfluoro(alkyl vinyl ether) and 2,3,3,3-tetrafluoropropene; monomer (b): a monomer having at least one type of functional group selected from the group consisting of an epoxy group, a hydroxy group, a carbonyl group-containing group and an isocyanate group; monomer (c): a monomer selected from the group consisting of ethylene and propylene.
    Type: Grant
    Filed: April 29, 2020
    Date of Patent: April 19, 2022
    Assignee: AGC Inc.
    Inventors: Satoko Yasuda, Keisuke Yagi, Takehiro Kose, Yukiko Hattori, Toshikazu Yoneda
  • Publication number: 20210403623
    Abstract: To provide a method for producing a fluorinated polymer which does not require an emulsifier as an essential component while an aqueous medium with little environmental burden is used.
    Type: Application
    Filed: September 9, 2021
    Publication date: December 30, 2021
    Applicant: AGC Inc.
    Inventors: Kosuke SHIBASAKI, Yukiko HATTORI, Shinya HIGUCHI, Junko ANZAI
  • Publication number: 20210380794
    Abstract: To provide a method for producing crosslinked rubber excellent in hardness and transparency. The method for producing crosslinked rubber of the present invention is a method for producing crosslinked rubber, which comprises crosslinking a fluorinated copolymer in a composition comprising the fluorinated copolymer, a crosslinking agent and a crosslinking co-agent, wherein the fluorinated copolymer is a copolymer having units based on tetrafluoroethylene and units based on a perfluoro(alkyl vinyl ether), the content of the units based on tetrafluoroethylene is from 65 to 90 mol % to all units of the fluorinated copolymer, in the composition, the content of the crosslinking agent is from 0.03 to 0.7 part by mass to 100 parts by mass of the fluorinated copolymer, the content of the crosslinking co-agent is from 0.1 to 2.5 parts by mass to 100 parts by mass of the fluorinated copolymer, and the hardness is from 65 to 100.
    Type: Application
    Filed: August 25, 2021
    Publication date: December 9, 2021
    Applicant: AGC Inc.
    Inventors: Yukiko HATTORI, Tsuyoshi KAWAI, Takeshi YAMADA, Takehiro KOSE
  • Patent number: 11117993
    Abstract: To provide a fluorinated elastic copolymer having a low content of metal elements and being excellent in crosslinkability. This fluorinated elastic copolymer has iodine atoms and has units a based on tetrafluoroethylene, units b based on a monomer having one polymerizable unsaturated bond (but excluding tetrafluoroethylene), and units c based on a fluorinated monomer having at least two polymerizable unsaturated bonds, wherein the metal content is at least 0.3 ppm by mass and at most 20.0 ppm by mass.
    Type: Grant
    Filed: December 2, 2019
    Date of Patent: September 14, 2021
    Assignee: AGC Inc.
    Inventors: Yukiko Hattori, Takehiro Kose
  • Publication number: 20210163648
    Abstract: To provide a fluorinated copolymer excellent in low temperature properties and crosslinking property as a fluororubber, and a method for producing it. A fluorinated copolymer which has units based on tetrafluoroethylene, units based on propylene and units based on a compound represented by the following formula 1, and which has either one or both of iodine atoms and bromine atoms: CF2?CFO(Rf1O)nRf2??formula 1 wherein Rf1 is a C1-3 perfluoroalkylene group, Rf2 is a C1-6 perfluoroalkyl group, n is an integer of from 1 to 4, and in a case where n is from 2 to 4, a plurality of Rf1 may be the same or different.
    Type: Application
    Filed: February 11, 2021
    Publication date: June 3, 2021
    Applicant: AGC Inc.
    Inventors: Satoko YASUDA, Takehiro KOSE, Yukiko HATTORI, Toshikazu YONEDA
  • Publication number: 20200255567
    Abstract: To provide a fluorinated elastic copolymer excellent in adhesion, processability, mechanical properties, heat resistance and chemical resistance. A fluorinated elastic copolymer having units based on a monomer (a), units based on a monomer (b) and optionally units based on a monomer (c), which has an iodine atom bonded to a terminal of a molecular chain and the unit based on the monomer (b) adjacent to the iodine atom, and which has a proportion of the units based on the monomer (b) of from 0.09 to 2.0 mol % to all units. Monomer (a): monomer selected from the group consisting of tetrafluoroethylene, hexafluoropropylene, vinylidene fluoride, chlorotrifluoroethylene, a perfluoro(alkyl vinyl ether) and 2,3,3,3-tetrafluoropropene; monomer (b): a monomer having at least one type of functional group selected from the group consisting of an epoxy group, a hydroxy group, a carbonyl group-containing group and an isocyanate group; monomer (c): a monomer selected from the group consisting of ethylene and propylene.
    Type: Application
    Filed: April 29, 2020
    Publication date: August 13, 2020
    Applicant: AGC Inc.
    Inventors: Satoko YASUDA, Keisuke Yagi, Takehiro Kose, Yukiko Hattori, Toshikazu Yoneda
  • Publication number: 20200109226
    Abstract: To provide a fluorinated elastic copolymer composition whereby it is possible to obtain a crosslinked rubber article which is excellent in low temperature characteristics and which has sufficient hardness; and a crosslinked rubber article which is excellent in low temperature characteristics and which has sufficient hardness. The fluorinated elastic copolymer composition comprises a fluorinated elastic copolymer having units based on tetrafluoroethylene and units based on CF2?CFORf1 (wherein Rf1 is a C1-10 perfluoroalkyl group), and an organic silicon compound which has a perfluoropolyether chain and at least two polymerizable unsaturated bonds.
    Type: Application
    Filed: December 5, 2019
    Publication date: April 9, 2020
    Applicant: AGC Inc.
    Inventors: Yukiko Hattori, Takeshi Yamada, Takehiro Kose
  • Publication number: 20200109227
    Abstract: To provide a fluorinated elastic copolymer and a fluorinated elastic copolymer composition, whereby it is possible to obtain a crosslinked rubber article which has practically sufficient rubber physical properties and which is, at the same time, excellent in low-temperature characteristics; a crosslinked rubber article; and a method for producing a fluorinated elastic copolymer. The fluorinated elastic copolymer comprises units based on tetrafluoroethylene, units based on CF2?CFORf1 (Rf1 is a C1-10 perfluoroalkyl group), units based on CF2?CF(OCF2CF2)n—(OCF2)m?OR f2 (Rf2 is a C1-4 perfluoroalkyl group, n is an integer of from 0 to 3, m is an integer of from 0 to 4, and n+m is an integer of from 1 to 7), and units based on a fluorinated monomer having at least two polymerizable unsaturated bonds.
    Type: Application
    Filed: December 6, 2019
    Publication date: April 9, 2020
    Applicant: AGC Inc
    Inventors: Yukiko HATTORI, Takeshi YAMADA, Takehiro KOSE
  • Publication number: 20200102409
    Abstract: To provide a fluorinated elastic copolymer in which the contents of metal elements and chloride ions are low, and a method for producing a fluorinated elastic copolymer, whereby it is possible to obtain a fluorinated elastic copolymer in which the contents of metal elements and chloride ions are low. A fluorinated elastic copolymer in which the content of metal elements is at most 20.0 ppm by mass and the content of chloride ions is at most 1 ppm by mass; and a method for producing a fluorinated elastic copolymer, which comprises coagulating a fluorinated elastic copolymer in a latex containing the fluorinated elastic copolymer by using an acid containing no metal elements or no chloride ions, and washing the coagulated fluorinated elastic copolymer with a liquid medium having a content of metal elements of at most 2.0 ppm by mass and a content of chloride ions of at most 2 ppm by mass.
    Type: Application
    Filed: December 2, 2019
    Publication date: April 2, 2020
    Applicant: AGC Inc.
    Inventors: Yukiko Hattori, Takehiro Kose
  • Publication number: 20200102411
    Abstract: To provide a fluorinated elastic copolymer having a low content of metal elements and being excellent in crosslinkability. This fluorinated elastic copolymer has iodine atoms and has units a based on tetrafluoroethylene, units b based on a monomer having one polymerizable unsaturated bond (but excluding tetrafluoroethylene), and units c based on a fluorinated monomer having at least two polymerizable unsaturated bonds, wherein the metal content is at least 0.3 ppm by mass and at most 20.0 ppm by mass.
    Type: Application
    Filed: December 2, 2019
    Publication date: April 2, 2020
    Applicant: AGC Inc.
    Inventors: Yukiko Hattori, Takehiro Kose
  • Patent number: 10023671
    Abstract: To provide a perfluoroelastomer, which is excellent in low temperature properties, which does not lose value as a rubber and which is free from a decrease of the productivity, a perfluoroelastomer composition, a crosslinked rubber product, and a method for producing a perfluoroelastomer. A perfluoroelastomer comprising structural units (a) derived from tetrafluoroethylene, structural units (b) derived from a perfluoroalkyl vinyl ether represented by the formula (1) (such as perfluoromethyl vinyl ether) and structural units (c) derived from a perfluorooxaalkyl vinyl ether represented by the formula (2) (such as CF2?CFOCF2CF2OCF2CF2OCF2CF3).
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: July 17, 2018
    Assignee: Asahi Glass Company, Limited
    Inventors: Mizuna Toyoda, Hiroki Nagai, Akira Onodera, Takeshi Yamada, Yukiko Hattori
  • 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
  • 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: 20160208033
    Abstract: To provide a perfluoroelastomer, which is excellent in low temperature properties, which does not lose value as a rubber and which is free from a decrease of the productivity, a perfluoroelastomer composition, a crosslinked rubber product, and a method for producing a perfluoroelastomer. A perfluoroelastomer comprising structural units (a) derived from tetrafluoroethylene, structural units (b) derived from a perfluoroalkyl vinyl ether represented by the formula (1) (such as perfluoromethyl vinyl ether) and structural units (c) derived from a perfluorooxaalkyl vinyl ether represented by the formula (2) (such as CF2?CFOCF2CF2OCF2CF2OCF2CF3).
    Type: Application
    Filed: March 30, 2016
    Publication date: July 21, 2016
    Applicant: Asahi Glass Company, Limited
    Inventors: Mizuna TOYODA, Hiroki NAGAI, Akira Onodera, Takeshi Yamada, Yukiko HATTORI
  • Publication number: 20140080930
    Abstract: To provide 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 e.g. electrolysis of the alkali chloride aqueous solution. A process for producing a fluorinated copolymer, which comprises a step of washing a fluorinated copolymer of a fluorinated monomer having a carboxylic acid type functional group with a fluorinated olefin, by 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: Application
    Filed: November 15, 2013
    Publication date: March 20, 2014
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Shintaro FUKUNAGA, Yukiko HATTORI, Kazuo UMEMURA, Shigeru AIDA, Atsushi TSUJI, Toshinori TOMITA
  • Publication number: 20140073709
    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: Application
    Filed: November 18, 2013
    Publication date: March 13, 2014
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Yukiko Hattori, Shintaro Fukunaga, Kazuo Umemura, Shigeru Aida, Atsushi Tsuji, Toshinori Tomita