Patent ID: 6153550
Filing Date: 2000-11-28
Classification: B01J,C08F,Y10S

Abstract:
A catalyst composition for polymerization of alpha-olefins comprisingthe contact product of a metallocene complex of a transition metal of the formula Cp.sub.x MA.sub.y D.sub.z supported on an inert porous supportwherein x is 1 or 2; M is titanium, zirconium or hafnium; Cp is a cyclopentadienyl group, a substituted cyclopentadienyl group, a cyclopentadienyl group that is a part of a bicyclic or a tricyclic moiety or, when x is 2, the two cyclopentadienyl groups are optionally bridged to each other;and each of A and D is selected from the group consisting of a halogen atom, a hydrogen atom, an alkyl group, and combinations thereof; providing that x+y+z is equal to the valence of M; anda cocatalyst with perfluorinated phenyl groups of the general formula --[Al(R)O].sub.p --[Al(EC.sub.6 F.sub.5)O].sub.q --, wherein R is an alkyl group, E is a sulfur atom or an NH group; and the p:q ratio varies from 10:1 to 0:1.