Method for dimerizing an .alpha.-olefin
    41.
    发明授权
    Method for dimerizing an .alpha.-olefin 失效
    二烯化α-烯烃的方法

    公开(公告)号:US5625106A

    公开(公告)日:1997-04-29

    申请号:US570331

    申请日:1995-12-11

    摘要: A new class of olefin dimerization catalysts and an efficient method for their preparation is disclosed. B (C.sub.6 F.sub.5).sub.3 reacts quantitatively with Group 4 metallocene type catalysts to yield highly reactive cationic complexes as follows:(L.sub.2 MR.sup.2).sup.+ X.sup.- whereL=R.sub.2 (C.sub.5 H.sub.3); R=CR'.sub.3 ; R.sup.2 =alkyl group (C=1.ltoreq.20);M=Ti, Zr, Hf;X.sup.- =RB(C.sub.6 F.sub.5).sub.3.sup.-, or methylalumoxane.These complexes are potent catalysts and may be used in the dimerization of .alpha.-olefins.

    摘要翻译: 公开了一类新的烯烃二聚催化剂及其制备方法。 B(C6F5)3与第4族金属茂型催化剂定量反应,得到高反应性阳离子络合物如下:(L2MR2)+ X-,其中L = R2(C5H3); R = CR'3; R2 =烷基(C = 1〜20); M = Ti,Zr,Hf; X = RB(C 6 F 5)3 - 或甲基铝氧烷。 这些配合物是有效的催化剂,可用于α-烯烃的二聚。

    Homogeneous catalysts for stereoregular olefin polymerization
    44.
    发明授权
    Homogeneous catalysts for stereoregular olefin polymerization 失效
    用于立体规则烯烃聚合的均相催化剂

    公开(公告)号:US5455317A

    公开(公告)日:1995-10-03

    申请号:US373869

    申请日:1995-01-17

    摘要: The synthesis, and use as precatalysts of chiral organozirconium complexes for olefin polymerization are disclosed, having the structure (C.sub.5 R'.sub.4-x R*.sub.x) A (C.sub.5 R".sub.4-y R"'.sub.y) M Q.sub.p, where x and y represent the number of unsubstituted locations on the cyclopentadienyl ring; R', R", R"', and R* represent substituted and unsubstituted alkyl groups having 1-30 carbon atoms and R* is a chiral ligand; A is a fragment containing a Group 13, 14, 15, or 16 element of the Periodic Table; M is a Group 3, 4, or 5 metal of the Periodic Table; and Q is a hydrocarbyl radical, or halogen radical, with 3.ltoreq.p.ltoreq.o. Related complexes may be prepared by alkylation of the corresponding dichorides. In the presence of methylalumoxane or triarylborane cocatalysts, these complexes form "cation-like" species which are highly active for olefin polymerization. In combination with a Lewis acid cocatalyst, propylene or other .alpha.-olefin polymerization can be effected with very high efficiency and isospecificity.

    摘要翻译: 公开了具有结构(C5R'4-xR * x)A(C5R''4-yR“'y)M Qp的合成和用作烯烃聚合的手性有机锆络合物的预催化剂,其中x和y表示 环戊二烯基环上未取代位置的数目; R',R“,R”'和R *表示取代和未取代的具有1-30个碳原子的烷基,R *是手性配体; A是含有元素周期表第13,14,15或16族元素的片段; M是元素周期表的第3,4或5族金属; 且Q为烃基或卤素基团,其中3≤n≤0。 相关络合物可以通过相应的二氯化碳的烷基化来制备。 在甲基铝氧烷或三芳基硼烷助催化剂存在下,这些络合物形成对于烯烃聚合具有高活性的“阳离子”物质。 与路易斯酸助催化剂组合,丙烯或其它α-烯烃聚合可以以非常高的效率和特异性实现。

    Olefin and cycloalkene polymerization with organolanthanide catalysts
    47.
    发明授权
    Olefin and cycloalkene polymerization with organolanthanide catalysts 失效
    烯烃和烯烃与有机镧系元素催化剂的聚合

    公开(公告)号:US4801666A

    公开(公告)日:1989-01-31

    申请号:US029697

    申请日:1987-05-14

    摘要: The reaction of the organolanthanide complexes [.eta..sup.5 --(CH.sub.3).sub.5 C.sub.5 ].sub.2 MCl.sub.2.sup.- Li((C.sub.2 H.sub.5).sub.2 O).sub.2.sup.+, M=La, Nd, Sm, Lu, with LiCH[Si(CH.sub.3).sub.3 ].sub.2 provides a straight-forward route to ether-free and halide- free bis(pentamethylcyclopentadienyl) lanthanide alkyls, (.eta..sup.5 (CH.sub.3).sub.5 C.sub.5).sub.2 MCH--[Si(CH.sub.3).sub.3 ].sub.2. The (.eta..sup.5 (CH.sub.3).sub.5 C.sub.5).sub.2 NdCH[Si(CH.sub.3).sub.3 ].sub.2 complexes react with H.sub.2 under mild conditions to yield the corresponding hydrides [(.eta..sup.5 (CH.sub.3).sub.5 C.sub.5).sub.2 MH].sub.2. These complexes have been found to be extremely active homogeneous olefin polymerization catalysts, as well as catalysts for olefin and acetylene hydrogenation.

    摘要翻译: 有机镧系元素络合物[η5(CH3)5C5] 2MCl2-Li((C2H5)2O)2+,M = La,Nd,Sm,Lu与LiCH [Si(CH3)3] 2的反应提供了直链 (五甲基环戊二烯基)镧系元素烷基,(η5(CH 3)5 C 5)2 MCH- [Si(CH 3)3] 2。 (eta 5(CH3)5C5)2NdCH [Si(CH3)3] 2络合物在温和条件下与H 2反应,得到相应的氢化物[(η5(CH 3)5 C 5)2MH] 2。 已经发现这些络合物是非常活跃的均相烯烃聚合催化剂,以及用于烯烃和乙炔氢化的催化剂。

    Organolanthanide catalysts
    48.
    发明授权
    Organolanthanide catalysts 失效
    有机镧系催化剂

    公开(公告)号:US4668773A

    公开(公告)日:1987-05-26

    申请号:US715927

    申请日:1985-03-25

    摘要: The reaction of the organolanthanide complexes [.eta..sup.5 --(CH.sub.3).sub.5 C.sub.5 ].sub.2 MCl.sub.2.sup.- Li((C.sub.2 H.sub.5).sub.2 O).sub.2.sup.+, M=La, Nd, Sm, Lu, with LiCH[Si(CH.sub.3).sub.3 ].sub.2 provides a straight-forward route to ether-free and halide-free bis(pentamethylcyclopentadienyl) lanthanide alkyls, (.eta..sup.5 (CH.sub.3).sub.5 C.sub.5).sub.2 MCH--[Si(CH.sub.3).sub.3 ].sub.2. The (.eta..sup.5 (CH.sub.3).sub.5 C.sub.5).sub.2 NdCH[Si(CH.sub.3).sub.3 ].sub.2 complexes react with H.sub.2 under mild conditions to yield the corresponding hydrides [(.eta..sup.5 (CH.sub.3).sub.5 C.sub.5).sub.2 MH].sub.2. These complexes have been found to be extremely active homogeneous olefin polymerization catalysts, as well as catalysts for olefin and acetylene hydrogenation.

    摘要翻译: 有机镧系元素络合物[η5(CH3)5C5] 2MCl2-Li((C2H5)2O)2+,M = La,Nd,Sm,Lu与LiCH [Si(CH3)3] 2的反应提供了直链 (五甲基环戊二烯基)镧系元素烷基,(η5(CH 3)5 C 5)2 MCH- [Si(CH 3)3] 2。 (eta 5(CH3)5C5)2NdCH [Si(CH3)3] 2络合物在温和条件下与H 2反应,得到相应的氢化物[(η5(CH 3)5 C 5)2MH] 2。 已经发现这些络合物是非常活跃的均相烯烃聚合催化剂,以及用于烯烃和乙炔氢化的催化剂。