Method for preparing a supported catalyst system and its use in a polymerization process
AssigneeUnivation Technologies, LLC
InventorsAgapios K. Agapiou, Chi-I Kuo
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Abstract
The present invention relates to a composition of carboxylate metal salt and a flow improver useful in combination with a polymerization catalyst to improve the flowability and bulk density of the catalyst. The invention also relates to a polymerization process using the catalyst.
Claims11
A catalyst composition comprising, in combination, a polymerization catalyst comprising a supported bulky ligand metallocene-type catalyst, a carboxylate metal salt and a flow improver.
A method for making a catalyst composition, the method comprising the steps of:
- (a) forming a polymerization catalyst comprising supported a bulky ligand metallocene-type catalyst;
- (b) adding a carboxylate metal salt;
- and
- (c) adding at least one flow improver.
A continuous process for polymerizing olefin monomer(s) in a reactor under polymerization conditions, the process comprising the steps of:
- introducing olefin monomer(s) to the reactor;
- (i) introducing a polymerization catalyst comprising supported a bulky ligand metallocene-type catalyst (ii) a carboxylate metal salt;
- and (iii) a flow improver;
- and
- withdrawing a polymer product from the reactor.
Dependencies are inferred from the claim text.