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US 6,632,901 B2Granted
Polymerization process using an improved bulky ligand metallocene-type catalyst system
AssigneeUnivation Technologies, LLC
InventorLaughlin G. McCullough
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Abstract
The present invention relates to a polymerization process in the presence of a bulky ligand metallocene-type catalyst compound having an abstractable fluoride or fluorine containing leaving group.
Claims22
A process of polymerizing olefins comprising contacting:
- (a) ethylene and at least one comonomer selected from the group consisting of C4 to C8 alpha olefins;
- and
- (b) a supported catalyst system comprising a metallocene catalyst compound, the metallocene catalyst compound consisting of a bridged bis-cyclopentadienyl zirconocene catalyst compound comprising at least one fluoride or fluorine containing leaving group;
- wherein the polymerization process is a continuous gas phase process conducted at a temperature of greater than 70° C. in a reactor capable of producing polymer at a rate of greater than 227 Kg/hr.
1 more element
Dependencies are inferred from the claim text.