Polymerization of chloroprene with xanthates and dithiocarbamates
    74.
    发明授权
    Polymerization of chloroprene with xanthates and dithiocarbamates 失效
    氯丁二烯与二硫代氨基甲酸酯的聚合

    公开(公告)号:US4814401A

    公开(公告)日:1989-03-21

    申请号:US161990

    申请日:1988-02-29

    CPC分类号: C08F36/18

    摘要: An improved process for the preparation of polychloroprene by the emulsion (co)polymerization of chloroprene and optionally other monomers capable of copolymerization with chloroprene, using a peroxo activator, and subsequent working up of the product by stopping the reaction, stabilizing, degassing and isolating the product, characterized in that polymerization is carried out in the presence of dithiocarbamates and/or xanthates and 0 to 0.5% by weight of sodium .beta.-anthraquinone sulphonate.

    摘要翻译: 通过氯丁二烯和任选的其它能够与氯丁二烯共聚合的单体(使用过氧化氢活化剂)的乳液(共)聚合,以及随后通过停止反应,稳定化,脱气和分离来处理产物来改进制备聚氯丁二烯的改进方法 产物,其特征在于聚合在二硫代氨基甲酸盐和/或黄原酸盐和0至0.5重量%的β-蒽醌磺酸钠存在下进行。

    Nitrile rubbers which optionally contain alkylthio terminal groups and which are optionally hydrogenated
    77.
    发明授权
    Nitrile rubbers which optionally contain alkylthio terminal groups and which are optionally hydrogenated 有权
    任选地含有烷硫基端基并且任选被氢化的丁腈橡胶

    公开(公告)号:US08664315B2

    公开(公告)日:2014-03-04

    申请号:US12864381

    申请日:2009-01-16

    申请人: Werner Obrecht

    发明人: Werner Obrecht

    IPC分类号: C08K5/09

    CPC分类号: C08C1/15 C08F236/12 C08F2/24

    摘要: An improved polymerization and processing method allows the production of special nitrile rubbers which are characterized by a specific cation content which leads to an excellent storage stability and particularly good vulcanization rate and moreover results in vulcanized materials that have advantageous properties.

    摘要翻译: 通过改进的聚合和加工方法,可以生产以特定阳离子含量为特征的特殊丁腈橡胶,其具有优异的储存稳定性和特别好的硫化速率,并且还产生具有有利特性的硫化材料。