Metallocene compound and polymerization catalyst comprising heterocyclic group
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United States of America Patent
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Oct 22, 2002
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Sep 14, 2000
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Jan 28, 1999
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Abstract
Disclosed are compounds of the following core structure, and their use as polymerization catalysts: ##STR1## wherein M.sup.1 is a group lVb transition metal, R.sup.5 is a substituted aryl group, and R.sup.a forms a heteroatom-containing ring fused to the cyclopentadienyl ring.
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