Process for the preparation of an olefin polymer

Details Process for the preparation of an olefin polymer Process for the preparation of an olefin polymer

C - Chemistry, Metallurgy

08

F

C08F 2/00 (2006.01) C07C 45/28 (2006.01) C07C 45/46 (2006.01) C07C 49/67 (2006.01) C07F 17/00 (2006.01) C08F 4/60 (2006.01) C08F 10/00 (2006.01) C08F 4/659 (2006.01) C08F 4/6592 (2006.01) C08F 110/06 (2006.01)

Patent

CA 2076775

A very effective catalyst system for olefin polymeriza- tion consists of a cocatalyst, preferably an aluminoxane, and a metallocene of the formula (I) Image in which, preferably, M1 is Zr, R1 and R2 are alkyl or halogen, R3 to R6 are alkyl, -(CR8R9)m-R7-(CR8R9)n- is a chain having one or more members, in which R7 can also be a (substituted) hetero atom, and m+n is zero or 1. The catalyst system leads to polymers of variable molecular weight and stereotacticity, depending on the substituents R3 to R6 chosen, at polymerization temperatures which are relevant in industry.

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