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    • 53. 发明授权
    • Transition metal catalyst composition for olefin polymerization
    • 用于烯烃聚合的过渡金属催化剂组合物
    • US5021595A
    • 1991-06-04
    • US487695
    • 1990-03-02
    • Sudhin Datta
    • Sudhin Datta
    • C07F7/28B01J31/16B01J31/18B01J31/22C07F7/00C07F9/00C07F11/00C08F4/06C08F4/60C08F4/639C08F4/68C08F10/00
    • B01J31/223B01J31/181B01J31/1825C07F11/005C07F7/006C07F9/005C08F10/00B01J2531/46B01J2531/56B01J2531/62
    • This invention relates to bidentate transition metal catalyst compositions useful for coordination polymerization of alpha olefin monomers. The novel catalyst compounds are prepared by:(1) reacting a transition trihalide, a transition metal trialkoxide or mixed tri(halide/alkoxide), or the adducts of these materials with Lewis bases, with two equivalents of a bidentate chelating ligand; or(2) reacting two equivalents of the same or different transition metal (+3) tris chelates with one equivalent of a transition metal trihalide or its adduct with Lewis bases.The invention chelating ligands are those which contain at least two, and preferably not more than two, hetero atoms such as O, N, P, or S, separated by a hydrocarbon radical providing sufficient chain length so as to allow both hetero atoms to chelate the same metal atom. The chelating ligand must have at least one easily removable positive ion which is lost on chelation to afford a uninegative, bidentate ligand.
    • 本发明涉及可用于α-烯烃单体的配位聚合的二齿过渡金属催化剂组合物。 通过以下方法制备新型催化剂化合物:(1)使过渡三卤化物,过渡金属三醇盐或混合的三(卤化物/醇盐)或这些物质的加合物与路易斯碱反应,与两当量的二齿螯合配体反应; 或(2)使两当量的相同或不同的过渡金属(+3)三螯合物与一当量的过渡金属三卤化物或其与路易斯碱的加合物反应。 本发明螯合配体是含有至少两个,优选不多于两个杂原子如O,N,P或S的那些,由烃基分离,提供足够的链长以便允许两个杂原子螯合 相同的金属原子。 螯合配体必须具有至少一种容易除去的正离子,其在螯合时损失,以提供无定形的双齿配体。