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    FLUORINE-CONTAINING COPOLYMER
    1.
    发明申请
    FLUORINE-CONTAINING COPOLYMER 有权

    公开(公告)号：US20250019477A1

    公开(公告)日：2025-01-16

    申请号：US18895522

    申请日：2024-09-25

    Applicant: DAIKIN INDUSTRIES, LTD.

    Inventor： Tadaharu ISAKA ,  Yumi ZENKE ,  Yukari YAMAMOTO

    IPC: C08F214/26 ,  C09D127/18 ,  H01B3/44

    Abstract: There is provided a fluorine-containing copolymer comprising tetrafluoroethylene unit, hexafluoropropylene unit and perfluoro(propyl vinyl ether) unit, wherein the copolymer has a content of hexafluoropropylene unit of 9.5 to 11.4% by mass with respect to the whole of the monomer units, a content of perfluoro(propyl vinyl ether) unit of 0.8 to 1.7% by mass with respect to the whole of the monomer units, a melt flow rate at 372° C. of 9.0 to 14.0 g/10 min, and a total number of a carbonyl group-containing terminal group, —CF═CF2 and —CH2OH per 106 main-chain carbon atoms of 100 or less.

    FLUORINE-CONTAINING COPOLYMER
    4.
    发明公开
    FLUORINE-CONTAINING COPOLYMER 审中-公开

    公开(公告)号：US20230399436A1

    公开(公告)日：2023-12-14

    申请号：US18452075

    申请日：2023-08-18

    Applicant: DAIKIN INDUSTRIES, LTD.

    Inventor： Tadaharu ISAKA ,  Yumi ZENKE ,  Yukari YAMAMOTO

    IPC: C08F214/26 ,  C08F214/28 ,  H01B3/44

    CPC classification number: C08F214/262 ,  C08F214/282 ,  H01B3/445

    Abstract: There is provided a fluorine-containing copolymer containing tetrafluoroethylene unit, hexafluoropropylene unit, and a perfluoro(propyl vinyl ether) unit, wherein the copolymer has a content of hexafluoropropylene unit of 9.5 to 12.2% by mass with respect to the whole of the monomer units, a content of perfluoro(propyl vinyl ether) unit of 0.5 to 1.4% by mass with respect to the whole of the monomer units, a melt flow rate at 372° C. of 0.8 to 4.0 g/10 min, and a number of —CF2H of more than 50 per 106 main-chain carbon atoms.

    INJECTION-MOLDED BODY AND PRODUCTION METHOD THEREFOR
    8.
    发明公开
    INJECTION-MOLDED BODY AND PRODUCTION METHOD THEREFOR 审中-公开

    公开(公告)号：US20230390981A1

    公开(公告)日：2023-12-07

    申请号：US18453810

    申请日：2023-08-22

    Applicant: DAIKIN INDUSTRIES, LTD.

    Inventor： Hayato TSUDA ,  Tadaharu ISAKA ,  Yumi ZENKE ,  Yukari YAMAMOTO ,  Yasuyuki YAMAGUCHI ,  Hiroyuki HAMADA

    IPC: B29C45/00 ,  B29C45/78

    CPC classification number: B29C45/0001 ,  B29C45/78 ,  B29K2027/18

    Abstract: Provided an injection molded article obtained by injection molding a copolymer using a mold provided with a gate, wherein the copolymer contains tetrafluoroethylene (TFE) unit and a fluoro(alkyl vinyl ether) (PAVE) unit, the content of the fluoro(alkyl vinyl ether) unit of the copolymer is 3.5 to 4.7% by mass with respect to the whole of the monomer units, the melt flow rate at 372° C. of the copolymer is 22.0 to 35.0 g/10 min, the number of functional groups of the copolymer is 20 or less per 106 main-chain carbon atoms, and the injection molded article has a gate section corresponding to the gate of the mold, and the ratio of the maximum flow length from the gate section of the injection molded article (a) to the average value of the product thickness on the maximum flow length (b), ((a)/(b)), is 80 to 200.

    FLUORINE-CONTAINING COPOLYMER
    9.
    发明公开
    FLUORINE-CONTAINING COPOLYMER 审中-公开

    公开(公告)号：US20230382026A1

    公开(公告)日：2023-11-30

    申请号：US18448501

    申请日：2023-08-11

    Applicant: DAIKIN INDUSTRIES, LTD.

    Inventor： Tadaharu ISAKA ,  Yumi ZENKE ,  Yukari YAMAMOTO

    IPC: B29C45/00 ,  C08F246/00

    CPC classification number: B29C45/0001 ,  B29K2027/12 ,  C08F246/00

    Abstract: There is provided a fluorine-containing copolymer comprising tetrafluoroethylene unit, hexafluoropropylene unit, and a perfluoro(propyl vinyl ether) unit, wherein the copolymer has a content of the hexafluoropropylene unit of 10.3 to 11.5% by mass with respect to the whole of the monomer units, a content of the perfluoro(propyl vinyl ether) unit of 0.8 to 1.6% by mass with respect to the whole of the monomer units, and a melt flow rate at 372° C. of 10.0 to 13.0 g/10 min.

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