Modifying organoaluminum co-catalysts for improved performance
AssigneeSabic Global Technologies B.V.
InventorsSebastiano Lucciulli, Roland Schmidt
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Abstract
Processes of making catalyst compositions are provided. In an exemplary embodiment, the processes include modifying an organoaluminum compound with a modifier that decreases the initial reducing strength of the organoaluminum compound, where the modifier can be an ether, an anhydride, an amine, an amide, a silicate, a silyl ether, a siloxane, an ester, a carbonate, a urea, a carbamate, a sulfoxide, a sulfone, a phosphoramide, or a combination thereof. The processes further include adding a transition metal complex to the mixture of the organoaluminum compound and the modifier; and obtaining a catalyst composition including the organoaluminum compound and the transition metal complex.
Claims19
A process of making a catalyst composition, comprising:
- treating an organoaluminum compound with a modifier that decreases the initial reducing strength of the organoaluminum compound, wherein the modifier is selected from the group consisting of ethers, anhydrides, amines, amides, silicates, silyl ethers, siloxanes, esters, carbonates, ureas, carbamates, sulfoxides, sulfones, phosphoramides, silanes, and acetals;
- adding a transition metal complex to the mixture of the organoaluminum compound and the modifier;
- and
- obtaining a catalyst composition comprising the organoaluminum compound and the transition metal complex;
- wherein the molar ratio of the organoaluminum compound to the modifier is about 1:10 to about 1:2.
Dependencies are inferred from the claim text.