Polymerisation Catalysts
    1.
    发明申请
    Polymerisation Catalysts 审中-公开
    聚合催化剂

    公开(公告)号:US20090215972A1

    公开(公告)日:2009-08-27

    申请号:US11884653

    申请日:2006-02-15

    IPC分类号: C08F4/18 C08F4/00 C08F4/42

    摘要: A process for the polymerisation of ethylene or the copolymerisation of ethylene and alpha-olefins in the presence of a catalyst system comprising—as components (a) a transition metal compound, (b) a non-aluminoxane activator, and (c) optionally a support, comprises the use of a prepolymer prepared by contact of the catalyst components with ethylene and/or one of more alpha-olefins at a temperature in the range 60° C. to 100° C. The prepolymer may be isolated or used in situ for the polymerisation of ethylene or the copolymerisation of ethylene and alpha-olefins in particular 1-hexene. By use of the process thermal stability of the catalyst is improved leading to increased activity without any deterioration in polymer morphology.

    摘要翻译: 一种催化剂体系存在下乙烯聚合或乙烯与α-烯烃的共聚合方法,该催化剂体系包括:(a)过渡金属化合物,(b)非铝氧烷活化剂,和(c)任选的 载体包括使用通过催化剂组分与乙烯和/或其中一种α-烯烃在60℃至100℃的温度下接触而制备的预聚物。预聚物可以原位分离或使用 用于乙烯的聚合或乙烯和α-烯烃特别是1-己烯的共聚合。 通过使用该方法,催化剂的热稳定性得到改善,导致活性增加而聚合物形态没有任何劣化。