Patent ID: 6380390
Filing Date: 2002-04-30
Classification: C07F,C08F,Y10S

Abstract:
A process for producing an olefin polymer, which comprises contacting at least one olefin monomer under polymerization conditions with a catalyst composition comprising: a) a catalyst precursor having a formula selected from the group consisting of: and wherein M is a metal selected from the group consisting of Group 3 to 10 and Lanthanide series elements; each X is a monovalent or bivalent anion; o is 0, 1, 2, or 3 depending on the valence of M; each R1, R2, R3, and R4 is a hydrocarbon group containing 1 to 20 carbon atoms and two or more adjacent R1, R2, R3, or R4 groups may be joined to form an aliphatic or aromatic ring; and each m is independently from 0 to 4; and b) an activating cocatalyst.