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    POLYMER AND LIGHT CONTROL DEVICE
    5.
    发明公开
    POLYMER AND LIGHT CONTROL DEVICE 审中-实审

    公开(公告)号：EP4389779A1

    公开(公告)日：2024-06-26

    申请号：EP22858243.3

    申请日：2022-07-21

    申请人： National Institute of Information and Communications Technology

    发明人： OTOMO, Akira ,  TANAKA, Kouichi ,  YAMADA, Toshiki ,  YAMADA, Chiyumi ,  KAMADA, Shun ,  UEDA, Rieko

    IPC分类号： C08F8/00 ,  C08F20/36 ,  G02F1/061 ,  G02F1/361

    CPC分类号： C08F20/36 ,  C08F8/00 ,  G02F1/361 ,  G02F1/061

    摘要： Provided is a polymer capable of being suitably used for an optical control element useful in shorter wavelength bands than the C band. A polymer represented by the formula (1).

    [In the formula (1), RA1 and RA2 are each independently an alkyl group having 1 to 10 carbon atoms, an aryl group having 6 to 12 carbon atoms, or an alkyl aryl group having 7 to 15 carbon atoms, hydrogen atoms contained in the alkyl group, the aryl group, and the alkyl aryl group are optionally substituted with halogen atoms, and RA1 and RA2 are optionally linked to each other to form a 3- to 12-membered saturated alicyclic structure together with a carbon atom to which they are bonded. X represents a phenylene group, an ethylene group, or a phenylenevinylene group, RD1 represents an alkanediyl group having 1 to 10 carbon atoms, RD2 represents an alkyl group having 1 to 10 carbon atoms, and any carbon atoms contained in RD1 and RD2 are optionally linked to each other to form a 3- to 12-membered saturated heterocyclic structure together with a nitrogen atom to which RD1 and RD2 are bonded. Y represents a linking group. Po represents a polymer structure].

    FLUORINE-CONTAINING COPOLYMER
    10.
    发明公开
    FLUORINE-CONTAINING COPOLYMER 审中-公开

    公开(公告)号：EP4299621A1

    公开(公告)日：2024-01-03

    申请号：EP22759877.8

    申请日：2022-02-28

    申请人： Daikin Industries, Ltd.

    发明人： ISAKA, Tadaharu ,  ZENKE, Yumi ,  YAMAMOTO, Yukari

    IPC分类号： C08F8/00 ,  C08F214/26 ,  H01B7/02 ,  C08J7/12

    摘要： 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 10.4 to 11.5% by mass with respect to the whole of the monomer units, a content of perfluoro(propyl vinyl ether) unit of 0.5 to 1.6% by mass with respect to the whole of the monomer units, a melt flow rate at 372°C of 7.0 to 9.9 g/10 min, and a total number of - CF 2 H, carbonyl group-containing terminal groups, -CF=CF 2 and - CH 2 OH of 90 or less per 10 6 main-chain carbon atoms.