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US 10,428,091 B2Granted
Catalyst systems containing low valent titanium-aluminum complexes and polymers produced therefrom
AssigneeChevron Phillips Chemical Company LP
InventorsCarlos A. Cruz, Jared L. Barr
Life of this patent
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Abstract
Disclosed herein are methods for synthesizing low valence, titanium-aluminum complexes from half-metallocene titanium compounds and alkylaluminum compounds. The titanium-aluminum complexes can be used as components in catalyst systems for the polymerization of olefins.
Claims20
A method of making a titanium-aluminum complex having the formula:
- the method comprising:
- contacting a half-metallocene titanium compound having the formula:
- with an alkylaluminum compound having the formula Al(RX)(RY)(RZ) to form a mixture comprising the titanium-aluminum complex having formula (A);
- wherein:
- X1 and X2 independently are a halide;
- R1, R2, and R3 independently are H or a halide, C1 to C36 hydrocarbyl group, C1 to C36 halogenated hydrocarbyl group, C1 to C36 hydrocarboxy group, or C1 to C36 hydrocarbylsilyl group;
- Cp is a substituted or unsubstituted cyclopentadienyl, indenyl, or fluorenyl group;
- and
- RX, RY, and RZ independently are a C1 to C10 alkyl group.
6 more elements
A titanium-aluminum complex having the formula:
- wherein:
- X1 and X2 independently are a halide;
- R1, R2, and R3 independently are H or a halide, C1 to C36 hydrocarbyl group, C1 to C36 halogenated hydrocarbyl group, C1 to C36 hydrocarboxy group, or C1 to C36 hydrocarbylsilyl group;
- Cp is a substituted or unsubstituted cyclopentadienyl, indenyl, or fluorenyl group;
- and
- RY and RZ independently are a C1 to C10 alkyl group.
3 more elements
A catalyst composition comprising a titanium-aluminum complex, an activator, and an optional co-catalyst, wherein the titanium-aluminum complex has the formula:
- wherein:
- X1 and X2 independently are a halide;
- R1, R2, and R3 independently are H or a halide, C1 to C36 hydrocarbyl group, C1 to C36 halogenated hydrocarbyl group, C1 to C36 hydrocarboxy group, or C1 to C36 hydrocarbylsilyl group;
- Cp is a substituted or unsubstituted cyclopentadienyl, indenyl, or fluorenyl group;
- and
- RY and RZ independently are a C1 to C10 alkyl group.
3 more elements
Dependencies are inferred from the claim text.