Metallocenes, and their use as catalysts

Organic compounds -- part of the class 532-570 series – Organic compounds – Heavy metal containing

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502103, 502117, 502152, 526160, 526943, 534 15, 556 12, 556 20, 556 28, 556 43, 556 53, 556 54, 556 58, C07F 1700, C07F 728, B01J 3100

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057102970

ABSTRACT:
The present invention relates to a stereorigid metallocene compound containing, as ligands, at least two substituted or unsubstituted cyclopentadienyl groups which are bonded to one another via a monocyclic or polycyclic ring system, where at least one cyclopentadienyl group is fused to the monocyclic or polycyclic ring system, and to a process for the preparation of a cycloolefin copolymer. The cycloolefin copolymers obtained in this way have high tear strengths and are suitable for the production of extrusion parts and injection moldings.

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