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

2007-08-14

2007-08-14

Teskin, Fred (Department: 1713)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S226000, C526S236000, C526S237000

Reexamination Certificate

active

10726455

ABSTRACT:
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 copolymerization 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, and hafnium hallogenides.

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