Metallocenes as catalysts in the preparation of cycloolefin copolymers
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United States of America Patent
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Nov 23, 1999
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N/A
app pub date -
Dec 26, 1996
filing date -
Dec 21, 1993
priority date (Note) -
Expired
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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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