Process for the preparation of a high molecular weight...

Details Process for the preparation of a high molecular weight... Process for the preparation of a high molecular weight...

C - Chemistry, Metallurgy

08

F

C08F 2/00 (2006.01) C08F 4/60 (2006.01) C08F 10/00 (2006.01) C08F 10/06 (2006.01) C08F 32/04 (2006.01) C08F 110/06 (2006.01) C08F 4/659 (2006.01) C08F 4/6592 (2006.01) C08F 110/02 (2006.01) C08F 210/06 (2006.01)

Patent

CA 2055216

Process for the preparation of a high molecular weight olefin polymer A very active catalyst system for olefin polymerization is composed of an aluminoxane and a metallocene of the formula I (see formula I) wherein preferably M1 is Zr or Hf, R1 and R2 are alkyl or halogen, R3 and R4 are hydrogen, R5 and R6 are alkyl or haloalkyl, -(CR8R9)m-R7-(CR8R9)n- is a single-membered or multimembered chain in which R7 may also be a (sub- stituted) hetero atom, and m+n is zero or 1. The catal- yst system gives polymers having a high molecular weight and high stereospecificity.

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