Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
July 21, 2009
Patent Application Number
11202311
Date Filed
August 11, 2005
Patent Primary Examiner
Patent abstract
The present invention is directed to the use of aluminum alkyl activators and co-catalysts to improve the performance of chromium-based catalysts. The aluminum alkyls allow for the variable control of polymer molecular weight, control of side branching while possessing desirable productivities, and may be applied to the catalyst directly or separately to the reactor. Adding the alkyl aluminum compound directly to the reactor (in-situ) eliminates induction times.
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