Process for making fluoropolymers
    32.
    发明授权
    Process for making fluoropolymers 失效
    制备含氟聚合物的方法

    公开(公告)号:US5639837A

    公开(公告)日:1997-06-17

    申请号:US658676

    申请日:1996-06-04

    CPC classification number: C08F14/18

    Abstract: Disclosed herein is a process in which fluorine containing olefins are polymerized using an initiation system which is a combination of a fluoroaliphatic sulfinate or sulfinic acid and chlorate, bromate or hypochlorite ions. The resulting polymer contains fewer deleterious end groups and is more stable and/or easier to process. The polymers produced are useful as thermoplastics and elastomers.

    Abstract translation: 本文公开的是使用作为氟代脂族亚磺酸盐或亚磺酸与氯酸盐,溴酸盐或次氯酸盐离子的组合的引发体系聚合含氟烯烃的方法。 所得聚合物含有较少有害的末端基团并且更稳定和/或更容易加工。 所生产的聚合物可用作热塑性塑料和弹性体。

    Curable fluoroelastomer composition
    35.
    发明授权
    Curable fluoroelastomer composition 有权
    可固化含氟弹性体组合物

    公开(公告)号:US08765876B2

    公开(公告)日:2014-07-01

    申请号:US13420719

    申请日:2012-03-15

    CPC classification number: C08F224/00 C08F220/42 C08G65/007 C08L27/12 C08L71/00

    Abstract: Fluoroelastomer compositions comprising fluoroelastomers having copolymerized units of a nitrile-containing cure site monomer are cured with certain hydrazide curatives. The hydrazide is of the general formula R1(C(O))nNHNHR2, wherein n is 1 or 2; R1 is NH2, NHNH2, NHR3, NR32, NHNHC(O)NH2, NHNHC(O)NHNH2, NHNHR2, or NHC(O)NHNH2; R2 is H, alkyl, aryl, heterocycle, CO2R3, C(O)R3, CH2R4, or C(O)R4; R3 is alkyl, aryl, heterocycle, or CH2R4; and R4 is a fluoroalkyl group.

    Abstract translation: 包含具有含腈固化部位单体的共聚单元的含氟弹性体的含氟弹性体组合物用某些酰肼固化剂固化。 酰肼为通式R 1(C(O))nNHNHR 2,其中n为1或2; R1是NH2,NHNH2,NHR3,NR32,NHNHC(O)NH2,NHNHC(O)NHNH2,NHNHR2或NHC(O)NHNH2; R 2是H,烷基,芳基,杂环,CO 2 R 3,C(O)R 3,CH 2 R 4或C(O) R3是烷基,芳基,杂环或CH2R4; R4为氟代烷基。

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