PROCESS FOR PREPARING FLUORINE-CONTAINING POLYMER
    2.
    发明申请
    PROCESS FOR PREPARING FLUORINE-CONTAINING POLYMER 审中-公开
    制备含氟聚合物的方法

    公开(公告)号:US20080255331A1

    公开(公告)日:2008-10-16

    申请号:US12015865

    申请日:2008-01-17

    IPC分类号: C08F214/22

    摘要: The present invention provides a process for preparing a fluorine-containing polymer having few branched chains and little weight change in high temperatures, which is a new process wherein composition distribution substantially does not occur. The fluorine-containing polymer is prepared by a batch copolymerization process conducted under conditions of reduced temperature of at least 0.95 and reduced pressure of at least 0.80 of the critical constant calculated from critical temperature, critical pressure and composition ratio of each monomer in the gaseous phase of the reaction vessel using the Peng-Robinson formula.

    摘要翻译: 本发明提供一种制备具有很少支链和在高温下重量变化小的含氟聚合物的方法,这是其中组合物分布基本上不发生的新方法。 含氟聚合物是通过间歇共聚方法制备的,所述间歇共聚方法是在降低至少0.95的温度和至少0.80的关键常数的减压条件下进行的,该临界常数由气相中各单体的临界温度,临界压力和组成比计算 的反应容器使用Peng-Robinson公式。