POWDER COATING MATERIAL COMPOSITION
    3.
    发明公开

    公开(公告)号:US20240141195A1

    公开(公告)日:2024-05-02

    申请号:US18409155

    申请日:2024-01-10

    CPC classification number: C09D127/18 B05D1/04 C09D7/48

    Abstract: A powder coating material composition including a tetrafluoroethylene-based copolymer, wherein the tetrafluoroethylene-based copolymer is a copolymer of 9.0 to 13.0 mass % of hexafluoropropylene, 0.8 to 3.0 mass % of a perfluoroalkyl vinyl ether, and tetrafluoroethylene, having a melt flow rate of 13 to 26 g/10-min, a melting point of 240 to 270° C., an average particle size of 5 to 500 μm and an apparent density of 0.5 to 1.1 g/ml. Also disclosed is a film that is formed from the powder coating material composition, a laminate including the film, a coated article wherein the film of the powder coating material composition is provided on a metal substrate, and a film-forming method which includes forming a primer film on an object to be coated, and forming a film on a surface of the primer film using the powder coating material composition.

    POWDER COATING COMPOSITION, COATING FILM, FLUORORESIN LAMINATE, AND ARTICLE

    公开(公告)号:US20240309237A1

    公开(公告)日:2024-09-19

    申请号:US18673507

    申请日:2024-05-24

    CPC classification number: C09D127/18 C09D5/031 C09D5/1668

    Abstract: A powder coating composition for a primer for a fluororesin layer and providing strong adhesion. The composition including an amide group-containable polymer compound (A), polyphenylene sulfide (B), and perfluorinated fluororesin (C), where the polymer compound (A) is an amide group-containing polymer (a1) having an amide group and an aromatic ring and/or an amide group-containing polymer precursor (a2) that changes to the amide group-containing polymer (a1) during sintering when forming the composition into a film, a content of the polyphenylene sulfide (B) is 1-50 mass % of a total of the polymer compound (A) and the polyphenylene sulfide (B), the perfluorinated fluororesin (C) includes tetrafluoroethylene in a range of 85.0-99.5 mol % and has a MFR in a range of 5-30 (g/10 min), and a content of the perfluorinated fluororesin (C) is 50.0-95.0 mass % of a total of the polymer compound (A), the polyphenylene sulfide (B), and the perfluorinated fluororesin (C).

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