Carbocationic catalysts and process for using said catalysts
AssigneeExxon Chemical Patents Inc.
InventorTimothy D. Shaffer
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Abstract
A carbocationic catalyst composition comprising an initiator of water, a tertiary alkyl or aralkyl halide, ester, ether, carboxylic acid, acid halide or a polymeric halide and a co-initiator of an alkoxy metal halide, is used to produce narrow molecular weight distribution olefin polymers particularly isobutylene/para-methyl-styrene copolymers.
Claims21
A catalyst composition comprising:
- an initiator comprising one or more of water, tertiary alkyl halides, tertiary aralkyl halides, tertiary alkyl esters, tertiary aralkyl esters, tertiary alkyl ethers, tertiary aralkyl ethers, tertiary alkyl carboxylic acids, tertiary aralkyl carboxylic acids, tertiary alkyl acid halides, tertiary aralkyl acid halides, wherein each alkyl is independently a linear, branched or cyclic chain alkyl and each aralkyl may be substituted or unsubstituted;
- and
- a co-initiator of alkoxy metal halide, wherein the metal is selected from the group consisting of aluminum, boron, gallium, vanadium, chromium, manganese, iron, cobalt, nickle, copper, zinc, tin, indium.
A catalyst composition comprising:
- an initiator of tertiary alkyl halide or tertiary aralkyl halide;
- and
- a co-initiator of an alkoxy aluminum halide.
A catalyst system comprising initiator of water, a co-initiator of alkoxy metal halide wherein the metal is selected from the group consisting of aluminum, boron, gallium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, zinc, tin, indium;
- and, optionally, an amine.
Dependencies are inferred from the claim text.