Process for preparing a highly selective fluorinated anion exchange
membrane
    4.
    发明授权
    Process for preparing a highly selective fluorinated anion exchange membrane 失效
    制备高选择性氟化阴离子交换膜的方法

    公开(公告)号:US4900420A

    公开(公告)日:1990-02-13

    申请号:US177844

    申请日:1988-03-28

    IPC分类号: C08J5/22

    CPC分类号: C08J5/2237 C08J2327/12

    摘要: A process for preparing an anion exchange membrane, which comprises subjecting a carboxylate membrane made of a copolymer having repeating units of the formula: ##STR1## wherein X is F or CF.sub.3, l is an integer of from 0 to 5, m is 0 or 1, n is an integer of from 1 to 5, and p/q is from 4 to 16, and R is an alkyl group, to an acid or base treatment, and then introducing anion exchange groups thereinto.

    摘要翻译: 一种制备阴离子交换膜的方法,包括使由具有下式的重复单元的共聚物制成的羧酸盐膜:其中X为F或CF 3,I为0至5的整数,m为0或 1,n为1〜5的整数,p / q为4〜16,R为烷基,进行酸或碱处理,然后向其中引入阴离子交换基团。

    Process for preparing dihalovinylcyclopropanecarboxylic acids
    6.
    发明授权
    Process for preparing dihalovinylcyclopropanecarboxylic acids 失效
    二卤乙烯基环丙烷羧酸的制备方法

    公开(公告)号:US4500733A

    公开(公告)日:1985-02-19

    申请号:US466182

    申请日:1983-02-14

    CPC分类号: A01N53/00

    摘要: A cyclopropanecarboxylic acid of the formula ##STR1## is prepared by the reaction of a compound of the formula ##STR2## with an alkali metal hydroxide or alkaline earth metal hydroxide in an ether type solvent. R.sup.1, R.sup.2, and R.sup.4 each independently is hydrogen or a hydrocarbon residue, R.sup.3 is hydrogen or lower alkyl, X is halogen, and A is --CH.sub.2 --CX, 3 or --CH.dbd.CX.sub.2.

    摘要翻译: 通过式(Ia)化合物与碱金属氢氧化物或碱土金属氢氧化物在醚类溶剂中的反应来制备式“IMAGE”的环丙烷羧酸。 R1,R2和R4各自独立地是氢或烃残基,R3是氢或低级烷基,X是卤素,A是-CH2-CX3或-CH = CX2。