04892851 is referenced by 286 patents and cites 17 patents.

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

Title
Process and catalyst for producing syndiotactic polyolefins
Application Number
7/220007
Publication Number
4892851
Application Date
July 15, 1988
Publication Date
January 9, 1990
Inventor
Abbas Razavi
Seabrook
TX, US
John A Ewen
Houston
TX, US
Agent
M Norwood Cheairs
John K Abokhair
Stuart L Watt
Assignee
Fina Technology
TX, US
IPC
C08F 4/68
C08F 4/64
C08F 4/62
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