PRODUCING POLYOLEFIN PRODUCTS
    10.
    发明公开

    公开(公告)号:EP3805278A1

    公开(公告)日:2021-04-14

    申请号:EP20209922.2

    申请日:2015-02-10

    IPC分类号: C08F210/16 C08F4/6592

    摘要: Catalyst systems and methods for making and using the same. A method of polymerizing olefins to produce a polyolefin polymer with a multimodal composition distribution, includes contacting ethylene and a comonomer with a catalyst system. The catalyst system includes a first catalyst compound and a second catalyst compound that are co-supported to form a commonly supported catalyst system. The first catalyst compound includes a compound with the general formula (C 5 H a R 1 b )(C 5 H c R 2 d )HfX 2 . The second catalyst compound comprises the following formula:

    wherein each R 3 or R 4 is independently H, a hydrocarbyl group, a substituted hydrocarbyl group, or a heteroatom group, wherein each R 3 or R 4 may be the same or different, and each X is independently a leaving group selected from a labile hydrocarbyl, a substituted hydrocarbyl, a heteroatom group, or a divalent radical that links to an R 3 group.