Process for production of high-isoprene butyl rubber

Details Process for production of high-isoprene butyl rubber Process for production of high-isoprene butyl rubber

C - Chemistry, Metallurgy

08

F

C08F 210/10 (2006.01) C08F 36/08 (2006.01) C08F 110/10 (2006.01) C08F 210/12 (2006.01)

Patent

CA 2413611

The present invention relates to a process for producing polymers comprising repeating units derived from at least one isoolefin monomer, at least one multiolefin monomer and optionally further copolymerizable monomers in the presence of at least one organic nitro compound and AlCl3/water wherein the process is conducted in the absence of compounds selected from the group consisting of vanadium compounds, zirconium halogenid, hafnium halogenides. Preferably the polymers have a multiolefin content of greater than 2.5 mol%, and a molecular weight M w of greater than 240 kg/mol.

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