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    Catalysts for the production of polyolefins
    37.
    发明授权
    Catalysts for the production of polyolefins 失效
    用于生产聚烯烃的催化剂

    公开(公告)号：US5527752A

    公开(公告)日：1996-06-18

    申请号：US412964

    申请日：1995-03-29

    申请人： Walter T. Reichle ,  Frederick J. Karol ,  Gregory T. Whiteker

    发明人： Walter T. Reichle ,  Frederick J. Karol ,  Gregory T. Whiteker

    IPC分类号： C08F4/64 ,  C07F7/30 ,  C07F17/00 ,  C08F4/42 ,  C08F4/60 ,  C08F4/642 ,  C08F4/659 ,  C08F4/6592 ,  C08F10/00 ,  C08F10/02 ,  C08F110/02 ,  C08F210/16

    CPC分类号： C08F10/02 ,  C08F10/00 ,  C08F110/02 ,  C08F210/16 ,  C08F4/65912 ,  C08F4/65916 ,  C08F4/6592 ,  C08F4/65925

    摘要： A catalyst precursor is provided which is useful, when combined with a cocatalyst, in the manufacture of polyolefins. The catalyst precursor is of the formula: ##STR1## where M is a transition metal, preferably Zr or Hf; L is a substituted or unsubstituted, .pi. bonded ligand coordinated to M, preferably a cyclopentadienyl-type ligand; Q can be the same or different and is independently selected from the group consisting of --O, --NR, --CR.sub.2 and --S; Y is either C or S; Z is selected from the group consisting of --OR, --NR.sub.2, --CR.sub.3, --SR, --SiR.sub.3, --PR.sub.2 or H; n is 1 or 2; A is a univalent anionic group when n is 2 or W is a divalent anionic group when n is 1; R can be the same or different and is independently a group containing carbon, silicon, nitrogen, oxygen, and/or phosphorus where one or more R groups may be attached to the L substituent, preferably R is a hydrocarbon group containing from 1 to 20 carbon atoms, most preferably an alkyl, cycloalkyl or an aryl group and one or more may be attached to the L substituent; B is a bridging group selected from the group consisting of an alkylene or arylene group containing from 1 to 10 carbon atoms, germanium, silicon and alkyl phosphine; and m is 1 to 7, preferably 2 to 6, most preferably 2 or 3.

    摘要翻译： 提供了催化剂前体，当与助催化剂组合时，其可用于制备聚烯烃。 催化剂前体具有下式：其中M是过渡金属，优选Zr或Hf; L是与M配位的取代或未取代的π键合的配体，优选环戊二烯基型配体; Q可以相同或不同，并且独立地选自-O，-NR，-CR 2和-S; Y是C或S; Z选自-OR，-NR2，-CR3，-SR，-SiR3，-PR2或H; n为1或2; 当n为2时，A为一价阴离子基团，当n为1时，A为二价阴离子基团; R可以相同或不同，并且独立地是含有碳，硅，氮，氧和/或磷的基团，其中一个或多个R基团可以连接到L取代基上，优选R是含有1至20个 碳原子，最优选烷基，环烷基或芳基，一个或多个可以连接到L取代基上; B是选自含有1至10个碳原子的亚烷基或亚芳基，锗，硅和烷基​​膦的桥基; m为1〜7，优选为2〜6，最优选为2或3。