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US 5,703,183 AGranted
Carbocationic catalysts and process for using said catalysts
AssigneeExxon Chemical Patents Inc.
InventorTimothy Daniel 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, a co-initiator of organometal alkoxide halides, organometal phenoxide halides and/or organometal carboxyl halides is used to produce polymers particularly polyisobutylene and isobutylene/para-methyl-styrene copolymers.
Claims15
A process for producing a polymer comprising contacting under polymerization conditions one or more olefinic, iso-olefinic, di-substituted olefinic or styrenic monomers with a catalyst composition comprising:
- an initiator;
- and
- a Lewis acid co-initiator comprising one or more of organometal alkoxide mono halides, organometal phenoxide mono halides or organometal carboxyl mono halides wherein the metal is selected form the group consisting of aluminum, boron, gallium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, zinc, tin and indium.
Dependencies are inferred from the claim text.