MOLDED ARTICLE HAVING COOLING-LIQUID-CONTACT SURFACE

    公开(公告)号:US20210024664A1

    公开(公告)日:2021-01-28

    申请号:US17043353

    申请日:2019-03-26

    Abstract: A molded product having a surface that is to be in contact with a coolant, the surface being formed of a crosslinked product of an amorphous fluorine-containing elastomer having a glass transition temperature of 25° C. or less, the fluorine-containing elastomer being a copolymer of: vinylidene fluoride; a fluorine-containing monomer represented by formula (1) below: CHXa═CXbRf  (1) wherein one of Xa and Xb is H, the other thereof is F, and Rf is a linear or branched fluoroalkyl group having 1 to 12 carbon atoms; and another monomer copolymerizable therewith, wherein a molar ratio of units of the vinylidene fluoride to units of the fluorine-containing monomer is 87/13 to 20/80, and units of the other monomer account for 0 to 50 mol % based on all monomer units.

    COMPOSITION, CROSSLINKED RUBBER MOLDED ARTICLE AND FLUORINE-CONTAINING POLYMER

    公开(公告)号:US20210292450A1

    公开(公告)日:2021-09-23

    申请号:US17265830

    申请日:2019-07-22

    Abstract: A composition including a fluorine-containing polymer and a cross-linking agent, wherein the fluorine-containing polymer contains a vinylidene fluoride unit, a unit of a fluorine-containing monomer (1) represented by the following general formula (1): CHX1═CX2Rf   (1) wherein one of X1 and X2 is H, the other is F, and Rf is a linear or branched fluoroalkyl group having 1 to 12 carbon atoms, and a unit of a monomer providing a crosslinking site. The monomer providing a crosslinking site is a monomer having at least one crosslinkable group selected from a cyano group, a carboxyl group, an alkoxycarbonyl group and a hydroxyl group. Also disclosed is a crosslinked rubber molded article obtained by crosslinking the composition.

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