Process for preparing a terpolymer of tetrafluoroethylene, ethylene and
a third monomer
    2.
    发明授权
    Process for preparing a terpolymer of tetrafluoroethylene, ethylene and a third monomer 失效
    制备四氟乙烯,乙烯和第三单体三元共聚物的方法

    公开(公告)号:US4678847A

    公开(公告)日:1987-07-07

    申请号:US846795

    申请日:1986-04-01

    摘要: The present invention relates to the process for preparing terpolymer of tetrafluoroethylene (TFE), ethylene (E), and a third monomer. According to the present invention, dicarbonate peroxide is used as initiator, 1,1,2-trichloro-1,2,2-trifluoro-ethane as the reaction medium and compounds of molecular formula C.sub.n R.sub.2n+2, wherein, n=0,1, or 2;R=H, Cl or F, are gaseous chain telomeric agents to control the average molecular weight of copolymers, the formula of third monomer is CF.sub.2 XCOCF.sub.2 X' or ##STR1## wherein X=X'=Cl or F, R.sub.1 =CF.sub.3 or CH.sub.3,R.sub.2 =CF.sub.3, CH.sub.3 or H, and R.sub.3 =H or F, usually the molar ratio of TFE to E is from 60:40 to 40:60 with the content of the third monomer being from 0.1% to 10%, based on the total molar amount of TFE and E.

    摘要翻译: 本发明涉及制备四氟乙烯(TFE),乙烯(E)和第三单体三元共聚物的方法。 根据本发明,使用二碳酸过氧化物作为引发剂,1,1,2-三氯-1,2,2-三氟乙烷作为反应介质和分子式CnR2n + 2的化合物,其中n = 0,1 或2; R = H,Cl或F是用于控制共聚物的平均分子量的气态链端粒剂,第三单体的式为CF 2 XCOCF 2 X'或其中X = X'= Cl或F,R 1 = CF3或CH3,R2 = CF3,CH3或H,R3 = H或F,通常TFE与E的摩尔比为60:40至40:60,第三单体的含量为0.1%至10 %,基于TFE和E的总摩尔量。