Removal of catalyst remnants from ethene/co copolymers

Details Removal of catalyst remnants from ethene/co copolymers Removal of catalyst remnants from ethene/co copolymers

C - Chemistry, Metallurgy

08

G

402/7.1

C08G 67/02 (2006.01) C08F 6/02 (2006.01) C08F 6/24 (2006.01)

Patent

CA 1275532

A B S T R A C T REMOVAL OF CATALYST REMNANTS FROM ETHENE/CO COPOLYMERS Process for removing the catalyst remnants from polymers of carbon monoxide with ethene and optionally also one or more other olefinically unsaturated hydrocarbons, which polymers have been prepared in the presence of an organic palladium phosphine catalyst, characterized in that a suspension of the polymer in an organic liquid is contacted with at least 0.25 mol of a bidentate ligand phosphine par gram atom of palladium present in the polymers, which phosphine has the general formula R1R2-P-R-P-R3R4, wherein R1, R2, R3 and R4 represent hydrocarbon groups which may or may not be substituted with polar groups and R represents a bivalent organic bridging group containing at least two carbon atoms in the bridge.

522030

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