Improved process for preparation of butyl rubber utilizing...

Details Improved process for preparation of butyl rubber utilizing... Improved process for preparation of butyl rubber utilizing...

C - Chemistry, Metallurgy

08

F

C08F 4/14 (2006.01) C08F 210/12 (2006.01)

Patent

CA 2252295

A process for preparing a butyl polymer having a weight average molecular weight of at least about 400,000. The process comprises the step of contacting a C4 to C8 monoolefin monomers with a C4 to C14 multiolefin monomer at a temperature in the range of from about -100°C to about +50°C in the presence of an aliphatic hydrocarbon diluent and a catalyst mixture comprising a major amount of a dialkylalumium halide, a minor amount of a monoalkylaluminum dihalide, and a minute amount of at least one of a member selected from the group comprising water, aluminoxane and mixtures thereof.

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