Modified lewis acid catalyzed polymerization

Details Modified lewis acid catalyzed polymerization Modified lewis acid catalyzed polymerization

C - Chemistry, Metallurgy

08

F

402/458

C08F 4/52 (2006.01) C08F 10/00 (2006.01) C08F 10/04 (2006.01) C08F 110/10 (2006.01)

Patent

CA 1238145

ABSTRACT OF THE DISCLOSURE Protection against molecular weight depres- sion in the polymerization reaction producing polyiso- butylene rubber or butyl rubber is achieved through ad- dition of minor amounts of certain metal alkyls, particu- larly the lower alkyl aluminum compounds or lower alkyl aluminum hydrides which function as buffering, neutral- izing or complexing agents against polymerization poisons and extraneous catalyst activators.

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