Method for preparing a supported catalyst system and its use in a polymerization process
AssigneeUnivation Technologies, LLC
InventorsChi-I Kuo, Agapios K. Agapiou, Steven K. Ackerman, Simon X. Zhang
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Abstract
The present invention relates to a composition of a carboxylate metal salt in combination with a heated polymerization catalyst to improve the flowability and operability of the catalyst. The invention also relates to methods for preparing the catalyst composition and to its use in a polymerization process.
Claims20
A composition of matter comprising a combination of a heated polymerization catalyst and a carboxylate metal salt.
A catalyst composition comprising, in combination, a heated polymerization catalyst comprising a bulky ligand metallocene catalyst compound and a carboxylate metal salt.
A method for making a catalyst composition, the method comprising the steps of:
- (a) heating a polymerization catalyst to a temperature greater than 30° C. to form a heated polymerization catalyst;
- and
- (b) combining the heated polymerization catalyst with a carboxylate metal salt.
A continuous process for polymerizing olefin monomer(s) in a reactor under polymerization conditions, the process comprising the steps of:
- (a) introducing olefin monomer(s) to the reactor;
- (b) heating a polymerization catalyst to a temperature greater than room temperature;
- (b) adding a carboxylate metal salt to the heated polymerization catalyst to form a catalyst composition;
- (c) introducing the catalyst composition to the reactor;
- and
- (d) withdrawing a polymer product from the reactor.
Dependencies are inferred from the claim text.