Catalyst system and its use in a polymerization process
AssigneeUnivation Technologies, LLC
InventorMatthew W. Holtcamp
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Abstract
Disclosed are polymerization catalyst activator compositions which include a carbonium cation and an aluminum containing anion. These activator compositions are prepared by combining a carbonium or trityl source and with an aluminum containing complex, preferably a perfluorophenylaluminum compound. Also disclosed are polymerization catalyst systems including the activator composition of the invention, and processes for polymerizing olefins utilizing same.
Claims15
A process for polymerizing olefin(s) in the presence of a catalyst system comprising combining:
- a) a polymerization catalyst;
- and
- b) an activator complex comprising a perfluoropheyl aluminum compound and a trityl source, where the perfluorophenyl aluminum is represented by
- Al(C6F5)mRn
- where m+n=3;
- each R is independently selected from the group consisting of monoanionic ligand, hydrogen, a hydroxyl group, an alkyl group, and combinations thereof, where the trityl source is represented by the formula
- (C6H5)3COL
- where L is selected from the group consisting of a metal moiety, a metalloid moiety, a monoanionic ligand, hydrogen, a hydroxyl group, and an alkyl group.
A process for polymerizing olefin(s) in the presence of a catalyst system comprising combining:
- a) a polymerization catalyst;
- and
- b) an activator represented by the formula:
- {Al(C6F5)mRn}x{(C6H5)3COL}y.
- where x and y may or may not be integers and represent the ratio in which {Al(C6F5)mRn} and {(C6H5)3COL } are combined;
- m+n=3;
- R is independently selected from the group consisting of a monoanionic ligand, hydrogen, a hydroxyl group, an alkyl group and combinations thereof;
- and each L may independently be a metal moiety, a metalloid moiety, a monoanionic ligand, hydrogen, a hydroxyl group, or an alkyl group.
Dependencies are inferred from the claim text.