Method for preparation of copolymers of isobutylene, which...

Details Method for preparation of copolymers of isobutylene, which... Method for preparation of copolymers of isobutylene, which...

C - Chemistry, Metallurgy

08

F

402/460

C08F 8/20 (2006.01) C08F 210/10 (2006.01)

Patent

CA 1103846

CASE 991 METHOD FOR THE PREPARATION OF COPOLYMERS OF ISOBUTYLENE WHICH CONTAIN UNSATURATIONS AND REACTIVE HALOGEN ATOMS. Abstract of the Disclosure Vulcanizable copolymers of isobutylene with linear trienes are prepared by halogenation of a previously prepared isobutylene-triene copolymer, The reaction is carried out preferably at subzero temperatures and in the dark due to the high react- ivity of certain halogenating agents: among these, even Haloid acids can be used, that which was impos- sible with the prior art procedures. The novel halogenated copolymers have a better behaviour when sulphur cured than the conventional chlorobutyl rubbers.

283718

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