Catalyst composition for preparing olefin polymers

Details Catalyst composition for preparing olefin polymers Catalyst composition for preparing olefin polymers

2005-08-16

2005-08-16

Rabago, Roberto (Department: 1713)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S134000, C526S161000, C526S172000, C526S281000, C526S308000, C526S943000

Reexamination Certificate

active

06930157

ABSTRACT:
A catalyst composition for preparing olefin polymers. The catalyst composition includes a metallocene compound and an activating cocatalyst. In the metallocene compound, two cyclopentadienyl groups are bridged by X (carbon, silicon, germanium or tin) in a ring structure. The bite angle θ formed by the two cyclopentadienyl rings and X is equal to or greater than 100 degrees. The obtained olefin polymer has high cycloolefin conversion and a high glass transition temperature. In addition, the catalyst composition can still maintain relatively high activity at high temperature reaction conditions.

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