Method for preparing functionalized hydrocarbon polymers

Details Method for preparing functionalized hydrocarbon polymers Method for preparing functionalized hydrocarbon polymers

C - Chemistry, Metallurgy

08

F

400/2044, 23/376

C08F 287/00 (2006.01) C08F 8/46 (2006.01) C08F 291/00 (2006.01)

Patent

CA 1326103

A B S T R A C T METHOD FOR PREPARING FUNCTIONALIZED HYDROCARBON POLYMERS A process for incorporating carboxyl and/or carboxyl derivative functionality into a hydrocarbon polymer which is substantially free of ethylenic unsaturation. The functionalization is accomplished by contacting the functionalizing agent or agents with the polymer in the presence of a free radical initiator in a blending apparatus capable of imparting high mechanical energy into the reaction medium. The blending apparatus is preferably an extruder and most preferably a non-intermeshing twin screw extruder. The amount of degradation resulting from the presence of a free radical initiator and the high mechanical shear at the elevated temperatures employed during the contact- ing is reduced by effecting the contacting in a suit- able diluent. Similarly, the amount of polymer cross- linking and/or coupling is reduced through the use of a suitable diluent. The polymer is maintained in the molten phase during the reaction.

603890

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