Improved cationic polymerization process and catalyst system...

Details Improved cationic polymerization process and catalyst system... Improved cationic polymerization process and catalyst system...

C - Chemistry, Metallurgy

08

F

C08F 210/10 (2006.01) C08F 2/38 (2006.01) C08F 210/12 (2006.01) C08F 210/14 (2006.01) C08F 232/00 (2006.01)

Patent

CA 2257701

A process for producing a copolymer of an isoolefin and at least one other comonomer comprising the step of polymerizing a reaction mixture comprising an isoolefin, a catalyst and at least one of a cycloconjugated multiolefin and an unconjugated cyclic olefin in the presence of an activator comprising a carbo cation producing species, a silica cation producing species and mixtures thereof. The process can be practiced using a solution polymerization approach or a slurry polymerization approach. One of the main benefits achieved with the present invention is the conversion of the monomers over a shorter period of time and higher percent conversion than when the activator is not used.

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