Preparation of syndiotactic 1, 2-polybutadiene using a chromium-containing catalyst system
    1.
    发明授权
    Preparation of syndiotactic 1, 2-polybutadiene using a chromium-containing catalyst system 失效
    使用含铬催化剂体系制备间同立构1,2-聚丁二烯

    公开(公告)号:US06201080B1

    公开(公告)日:2001-03-13

    申请号:US08996656

    申请日:1997-12-23

    IPC分类号: C08F469

    摘要: The instant invention teaches a method for forming a syndiotactic 1,2-polybutadiene product having a syndiotacticity of more than 66.5% and a melting temperature of more than about 100° C. The method includes polymerizing 1,3-butadiene in solution with a solvent, in the presence of catalytically effective amounts of: (a) an organomagnesium compound; (b) a chromium compound; and, (c) a dihydrocarbyl hydrogen phosphite. The present invention also contemplates a product of the method and an article made from the product.

    摘要翻译: 本发明教导了一种间同立构1,2-聚丁二烯产物的形成方法,其间同立构规整度大于66.5%,熔融温度大于约100℃。该方法包括使溶液中的1,3-丁二烯与溶剂聚合 在有催化有效量的情况下:(a)有机镁化合物; (b)铬化合物; 和(c)亚磷酸氢二烃基酯。 本发明还考虑了由该产品制成的方法和制品的产品。