Improved processability butyl rubber and process for...

Details Improved processability butyl rubber and process for... Improved processability butyl rubber and process for...

C - Chemistry, Metallurgy

08

F

C08F 210/12 (2006.01) C08F 210/04 (2006.01) C08F 212/36 (2006.01) C08F 232/06 (2006.01) C08F 236/02 (2006.01)

Patent

CA 2316741

A butyl polymer having improved processability is described, together with a process for production thereof. The butyl polymer derived from a reaction mixture which contains: (i) a monomer mixture comprising a C4 to C7 monoolefin monomer (preferably isobutylene) and a C4 to C14 multiolefin monomer (preferably isoprene); (ii) a multiolefin cross-linking agent (preferably divinyl benzene); and (iii) a chain transfer agent (preferably diisobutylene (2,4,4-trimethyl-1-pentene)). The subject butyl polymer has an improved balance of cold flow, filler dispersion, extrusion rate and die swell.

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