Process for the preparation of a polyolefin

C - Chemistry – Metallurgy – 08 – F

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402/570, 402/643

C08F 4/622 (2006.01) C08F 10/00 (2006.01) C08F 4/659 (2006.01) C08F 4/6592 (2006.01)

Patent

CA 2023559

Process for the preparation of a polyolefin Olefins of the formula R11-CH=CH-R12 (R11, R12 = H or C1-C14-alkyl) are polymerized in the presence of a catalyst consisting of at least one metallocene of the formula I Image (M = zirconium or hafnium) and an aluminoxane. Polymers having a high molecular weight are obtained in a high yield.

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