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US 6,806,326 B2Granted
Constrained geometry addition polymerization catalysts
AssigneeThe Dow Chemical Company
InventorsJames C. Stevens, Robert K. Rosen, Peter N. Nickias, David R. Wilson
Life of this patent
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Abstract
Metal complexes having constrained geometry and a process for preparation thereof, addition polymerization catalysts formed therefrom, processes for preparation of such addition polymerization catalysts, methods of use, and novel polymers formed thereby, including EIPE resins and pseudo-random copolymers, are disclosed and claimed.
Claims6
A catalyst composition for olefin polymerization comprising:
- (A) a metal coordination complex of the formula:
- (a) M is titanium;
- (b) Cp* is selected from the group consisting of cyclopentadienyl and R″m-substituted cyclopentadienyl, bound in an η5 bonding mode to M, wherein R″ is independently selected from the group consisting of alkyl of up to 20 carbon atoms and aryl of up to 20 carbon atoms and two adjacent R″ groups may join to form a ring and m is 1 to 4;
- (c) Z is selected from the group consisting of CR′2, CR′2CR′2, SiR′2, and SiR′2SiR′2, wherein each R′ is independently selected from the group consisting of alkyl of up to 20 carbon atoms, aryl of up to 20 carbon atoms, and mixtures thereof of up to 20 carbon atoms;
- (d) Y is NR or PR, wherein R is selected from the group consisting of alkyl of up to 20 carbon atoms, aryl of up to 20 carbon atoms, and mixtures thereof of up to 20 carbon atoms;
- (e) X is, independently each occurrence, selected from the group consisting of hydride, halide, alkyl of up to 30 carbon atoms, aryl of up to 30 carbon atoms, aryloxy of up to a total of 30 carbon and oxygen atoms, alkoxy of up to a total of 30 carbon and oxygen atoms, cyanide, azide, acetylacetonate, norbornyl, and benzyl;
- and
- (f) n is 2;
- and
- (B) an activating cocatalyst selected from the group consisting of noninterfering oxidizing agents, mixtures thereof, and mixtures of one or more noninterfering oxidizing agents with one or more aluminum alkyls, aluminum halides, aluminum alkylhalides, alkylaluminoxanes, Lewis acids, or ammonium salts.
7 more elements
A catalyst composition for olefin polymerization comprising:
- (A) a metal coordination complex of the formula:
- (a) M is titanium;
- (b) Cp* is selected from the group consisting of indenyl, tetrahydorindenyl, fluorenyl, octahydrofluorenyl, cyclopentadienyl, and R″m-substituted cyclopentadienyl, bound in an η5 bonding mode to M, wherein R″ is independently selected from the group consisting of alkyl of up to 20 carbon atoms and aryl of up to 20 carbon atoms;
- (c) Z is selected from the group consisting of CR′2, CR′2CR′2, SiR′2, and SiR′2SiR′2, wherein each R′ is independently selected from the group consisting of alkyl of up to 20 carbon atoms, aryl of up to 20 carbon atoms, and mixtures thereof of up to 20 carbon atoms;
- (d) Y is NR or PR, wherein R is selected from the group consisting of alkyl of up to 20 carbon atoms, aryl of up to 20 carbon atoms, and mixtures thereof of up to 20 carbon atoms;
- (e) X is, independently each occurrence, selected from the group consisting of hydride, halide, alkyl of up to 30 carbon atoms, aryl of up to 30 carbon atoms, aryloxy of up to a total of 30 carbon and oxygen atoms, alkoxy of up to a total of 30 carbon and oxygen atoms, cyanide, azide, acetylacetonate, norbornyl, and benzyl;
- and
- (f) n is 2;
- and
- (B) an activating cocatalyst selected from the group consisting of noninterfering oxidizing agents, mixtures thereof, and mixtures of one or more noninterfering oxidizing agents with one or more aluminum alkyls, aluminum halides, or aluminum alkylhalides.
7 more elements
A catalyst composition for olefin polymerization comprising:
- (A) a metal coordination complex of the formula:
- M is titanium;
- R each occurrence is independently selected from the group consisting of alkyl and aryl of up to 10 carbons;
- Y is nitrogen;
- and
- X independently each occurrence is halo, alkyl, aryl, or alkoxy of up to 10 carbons;
- and
- (B) an activating cocatalyst selected from the group consisting of noninterfering oxidizing agents, mixtures thereof, and mixtures of one or more noninterfering oxidizing agents with one or more aluminum alkyls, aluminum halides, aluminum alkylhalides, alkylaluminoxanes, Lewis acids, or ammonium salts.
5 more elements
Dependencies are inferred from the claim text.