Olefin polymerization catalysts containing amine derivatives
AssigneeEquistar Chemicals, LP
InventorsSandor Nagy, Bradley P. Etherton, Ramesh Krishnamurti, John A. Tyrell
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Abstract
Olefin polymerization is performed in the presence of a catalyst comprising a compound of the formula wherein M is a Group 3-10 transition metal; A is O, S, N—R″, or P—R″; L is an anionic ligand; X is hydride, halide, C1-C20 alkoxy, siloxy, hydrocarbyl, or dialkylamido; R, R′, and R″, which are the same or different, are selected from the group consisting of hydrogen and C1-C20 hydrocarbyl; and m+n equals the valency of M minus 1; and an activator.
Claims20
A method which comprises polymerizing an olefin in the presence of a catalyst comprising:
- (a) a compound of the formula:
- wherein M is a Group 3-10 transition metal;
- A is O, S, N—R″, or P—R″;
- L is an anionic ligand;
- X is hydride, halide, C1-C20 alkoxy, siloxy, hydrocarbyl, or dialkylamido;
- R, R′, and R″, which are the same or different, are selected from the group consisting of hydrogen and C1-C20 hydrocarbyl;
- and m+n equals the valency of M minus 1;
- and
- (b) an activator.
A method which comprises polymerizing an olefin in the presence of a catalyst comprising:
- (a) a compound of the formula:
- wherein M is a Group 4-6 transition metal;
- L is an anionic ligand;
- X is hydride, halide, methyl, phenyl, benzyl, neopentyl, or a C1-C20 alkoxy, siloxy, or dialkylamido;
- R, R′, and R″, which are the same or different, are selected from the group consisting of hydrogen and C1-C20 hydrocarbyl;
- and
- m+n equals the valency of M minus 1;
- and
- (b) an activator.
A method which comprises polymerizing an olefin in the presence of a catalyst comprising:
- (a) a compound of the formula:
- wherein M is a Group 3-10 transition metal;
- A is O, S, N—R″, or P—R″;
- L is an anionic ligand;
- X is hydride, halide, C1-C20 alkoxy, siloxy, hydrocarbyl, or dialkylamido;
- R, R′, and R″, which are the same or different, are selected from the group consisting of hydrogen and C1-C20 hydrocarbyl;
- and
- m+n equals the valency of M minus 1;
- and
- (b) an activator.
Dependencies are inferred from the claim text.