Process for the manufacture of halogenated polymers

Details Process for the manufacture of halogenated polymers Process for the manufacture of halogenated polymers

C - Chemistry, Metallurgy

08

F

402/3, 402/399,

C08F 8/20 (2006.01) C08C 19/12 (2006.01)

Patent

CA 1247791

IMPROVED PROCESS FOR THE MANUFACTURE OF HALOGENATED POLYMERS ABSTRACT OF THE DISCLOSURE In a process for the continuous halogena- tion of polymers by contacting polymer and halogenating agent in a continuous flow device in which the polymer and halogenating agent are subjected to deformation during reaction and in which means are provided for disengaging reaction by-products and unreacted halogenating agent from the reaction mixture, a significant process improvement is realized by injecting an inert gas into the halogenated polymers immediately after reaction in order to neutralize the product. In a preferred embodiment the process is carried out in an extruder-reactor and an optional, supplementary inert gas scrubbing zone is included. The process is amenable to saturated and unsaturated polymers.

450975

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