Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Plural component system comprising a - group i to iv metal...
Patent
1988-07-15
1990-01-09
Garvin, Patrick P.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Plural component system comprising a - group i to iv metal...
502117, 502103, 556 43, 556 53, 556 58, 526160, C08F 462, C08F 464, C08F 468
Patent
active
048928518
ABSTRACT:
The invention provides a metallocene catalyst for use in preparing syndiotactic polyolefins. The catalyst comprises a bridged metallocene in which one of the cyclopentadienyl rings is substituted in a substantially different manner from the other ring. It was discovered that this type of catalyst is highly syndiospecific, and it also produces a polymer with a novel microstructure. The invention further includes the use of one or more of the catalysts in a polymerization process. The catalyst is generally described by the formula
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Ewen John A.
Razavi Abbas
Abokhair John K.
Cheairs M. Norwood
Fina Technology, Inc.
Garvin Patrick P.
Watt Stuart L.
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