Process for the preparation of chemically homogeneous...

C - Chemistry – Metallurgy – 08 – F

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C08F 232/00 (2006.01) C07F 17/00 (2006.01) C08F 10/00 (2006.01) C08F 210/02 (2006.01) C08F 232/04 (2006.01) C08F 232/08 (2006.01) C08F 4/639 (2006.01) C08F 4/6392 (2006.01) C08F 4/659 (2006.01)

Patent

CA 2062201

Process for the preparation of chemically homogeneous cycloolefin copolymers Chemically homogeneous cycloolefin copolymers of polycyclic olefins, such as, for example, norbornene or tetracyclododecene, with cycloolefins and/or acyclic olefins are obtained without ring opening and in a high space-time yield if a catalyst system is used which comprises an aluminoxane and a stereorigid metallocene compound of an element from groups IVb to VIb, of the formula (See formula I) the part of the metallocene molecule formed by M1 and the substituents R16-R17 having C1-symmetry or being in the meso-form.

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