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1. 发明专利

AU634884B2 SUPPORTED POLYMERIZATION CATALYST 未知
公开(公告)号：AU634884B2
公开(公告)日：1993-03-04
申请号：AU7663891
申请日：1991-03-25
申请人： QUANTUM CHEMICAL CORPORATION
发明人： CHARLES K. BUEHLER , DOUGLAS D. KLENDWORTH
IPC分类号： C08F4/642 , C08F4/60 , C08F4/685 , C08F10/00
摘要： A catalyst useful in the polymerization of olefins is disclosed. The catalyst is produced by initially treating an inert inorganic compound to remove surface hydroxy groups. The thus treated inorganic compound is contacted with a hydrocarbon soluble magnesium compound in a second step. The product of this second step is contacted with a modifying compound selected from the group consisting of silicon halides, boron halides, aluminum halides, alkyl silicon halides, hexaalkyl disilazanes and mixtures thereof in a third step. The product of this third step is contacted a vanadium compound having the structured formula V(O)sX14-s, where X1 is halogen; and s is 0 or 1, a first titanium-containing compound having the structural formula Ti(OR2)nX2m, where R2 is hydrocarbyl; X2 is halogen; n is an integer of 1 to 4; and m is 0 or an integer of 1 to 3, with the proviso that the sum of n and m is 4, and a second titanium-containing compound having the structural formula TiX3(OR3)q, where X3 is halogen; R3 is hydrocarbyl; p is an integer of 1 to 4; and q is 0 or an integer of 1 to 3, with the proviso that the sum of p and q is 4 and that the first and the second titanium-containing compounds are not identical. A process for polymerizing olefins, using the catalyst of this disclosure is also provided.

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