Polymer production
    1.
    发明授权
    Polymer production 失效
    聚合物生产

    公开(公告)号:US5387649A

    公开(公告)日:1995-02-07

    申请号:US258807

    申请日:1994-06-13

    CPC分类号: C08F293/00 C08F8/42

    摘要: Novel metallated polyolefins are produced by contacting a polyolefin having a vinylidene group in the terminal portion with organoalkali metal compound in the presence of alkali metal t-alkoxide or tertiary amine. The metallated polyolefin is used to initiate the polymerization of polymerizable monomers to produce block copolymers of at least two blocks, at least one of which is saturated polyolefin.

    摘要翻译: 通过在碱金属叔醇盐或叔胺的存在下,将末端部分中具有亚乙烯基的聚烯烃与有机碱金属化合物接触来制备新的金属化聚烯烃。 金属化聚烯烃用于引发可聚合单体的聚合以产生至少两个嵌段的嵌段共聚物,其中至少一个是饱和聚烯烃。

    Anionic polymerization catalyst compositions
    4.
    发明授权
    Anionic polymerization catalyst compositions 失效
    阴离子聚合催化剂组合物

    公开(公告)号:US5064800A

    公开(公告)日:1991-11-12

    申请号:US604049

    申请日:1990-10-26

    摘要: A highly active anionic polymerization catalyst prepares butadiene polymers having a high 1,4-trans-dienyl content, the catalyst containing an organolithium compound, a barium, strontium or calcium compound, and trialkylaluminum compounds having at least 13 carbon atoms per molecule.

    摘要翻译: 高活性阴离子聚合催化剂制备具有高1,4-反式二烯基含量的丁二烯聚合物,含有有机锂化合物,钡,锶或钙化合物的催化剂和每分子具有至少13个碳原子的三烷基铝化合物。