Process for the purification of olefin polymerizates

Details Process for the purification of olefin polymerizates Process for the purification of olefin polymerizates

C - Chemistry, Metallurgy

08

F

402/583, 402/588

C08F 6/24 (2006.01) C08F 6/06 (2006.01) C08F 110/00 (2006.01)

Patent

CA 1060146

A B S T R A C T A process for the purification of an olefin polymer obtained by polymerizing one or more olefins with the aid of a catalyst comprising a titanium halide and an organo aluminium compound, which process comprises (a) contacting a slurry of the polymer in a liquid hydrocarbon medium with from 0.01 to 20 % w (based on the liquid phase) of an alcohol and with at least 0.1 mole of oxygen, or an equivalent amount of a peroxide, per gram atom of titanium present in the slurry, and (b) washing the polymer with a liquid hydrocarbon medium in the presence or 0.1 to 20 % w (based on the wash liquid) of an alcohol.

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