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    • 1. 发明授权
    • Process for producing fluorine-containing graft copolymer
    • 含氟接枝共聚物的制造方法
    • US06124404A
    • 2000-09-26
    • US203423
    • 1998-12-02
    • Takashi EnokidaHideo AokiOkimasa YamadaYasunori Yanai
    • Takashi EnokidaHideo AokiOkimasa YamadaYasunori Yanai
    • C09K3/10C08F255/02C08F259/08C08K5/14C08L51/00
    • C08F255/02C08F259/08
    • A fluorine-containing graft copolymer produced by copolymerizing at least two kinds of monomers selected from the group consisting of fluorinated monomers and propylene in the presence of a saturated iodine-containing compound or an iodine and bromine-containing compound, and further graft copolymerizing the resulting copolymer with tetrafluoroethylene and polyfluorovinyl ether represented by the general formula:CF.sub.2 .dbd.CFOCX.sub.2 (CF.sub.2).sub.p Y(where X is H or F, Y is H or F and p is 0-3), where an unsaturated iodine-containing compound or an unsaturated bromine-containing compound may be used together with the saturated iodine-containing compound or iodine and bromine-containing compound. The resulting fluorine-containing graft copolymer is a thermoplastic fluorine-containing copolymer elastomer capable of giving molding products having a distinguished compression set in a high temperature region such as about 280.degree. C. or higher and thus is suitably used as molding materials for sealing materials, etc.
    • 通过在饱和含碘化合物或碘和含溴化合物的存在下共聚选自氟化单体和丙烯中的至少两种单体,并进一步使所得到的含氟接枝共聚合制备的含氟接枝共聚物 由CF2 = CFOCX2(CF2)pY(其中X为H或F,Y为H或F且p为0-3)表示的四氟乙烯和多氟乙烯基醚的共聚物,其中不饱和含碘化合物或不饱和的 含溴化合物可以与饱和含碘化合物或碘和含溴化合物一起使用。 所得到的含氟接枝共聚物是一种热塑性含氟共聚物弹性体,能够在约280℃以上的高温区域赋予具有显着压缩永久变形的成型体,因此适合用作密封材料的成型材料 等等