Catalyst activator
AssigneeNOVA Chemicals (International) S.A.
InventorWei Xu
Life of this patent
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Abstract
A two component catalyst activator comprises: 1) a Lewis acidic organoboron (or an orgonoaluminum) component; and 2) a component defined by the formula AOSO2R wherein A is a pseudo cationic group and R is a hydrocarbyl or substituted hydrocarbyl. The catalyst activator is used in combination with a transition metal catalyst for the polymerization of olefins. The catalyst activator provides improved catalyst activities. It is especially useful in solution polymerizations because of desirable solubility characteristics in comparison to the borate salts used in prior activators.
Claims20
A catalyst activator for olefin polymerization catalysis comprising:
- 1) a Lewis acid defined by the formula:
- ML1L2L3
- wherein M is a metal selected from the group consisting of boron and aluminum;
- each of L1 and L2 is independently selected from the groups consisting of hydrocarbyl, substituted hydrocarbyl, hydrocarboxylide and substituted hydrocarboxylide;
- and L3 is selected from the group consisting of hydrocarbyl, substituted hydrocarbyl, hydrocarboxylide, substituted hydrocarboxylide, halide, amino, phosphido, siloxy and sulfido;
- and
- 2) a second component defined by the formula:
- AOSO2R
- wherein A is a pseudo cationic group and R is selected from the group consisting of hydrocarbyl and substituted hydrocarbyl.
A catalyst system for olefin polymerization comprising:
- A) a group 3-10 metal complex;
- and
- B) a catalyst activator comprising:
- 1) a Lewis acid defined by the formula:
- ML1L2L3
- wherein M is a metal selected from the group consisting of boron and aluminum;
- each of L1 and L2 is independently selected from the groups consisting of hydrocarbyl, substituted hydrocarbyl, hydrocarboxylide and substituted hydrocarboxylide;
- and L3 is selected from the group consisting of hydrocarbyl, substituted hydrocarbyl, hydrocarboxylide, substituted hydrocarboxylide, halide, amino, phosphido, siloxy and sulfido;
- and
- 2) a second component defined by the formula:
- AOSO2R
- wherein A is a pseudo cationic group and R is selected from the group consisting of hydrocarbyl and substituted hydrocarbyl.
Dependencies are inferred from the claim text.