Methods of Forming Halobutyl Elastomers

Abstract

The present disclosure relates to methods of forming halobutyl rubber. In at least one embodiment, a method of forming a halobutyl elastomer includes polymerizing, in a first reactor, a C4 to C7 isomonoolefin, and at least one comonomer to obtain a C4 to C7 isomonoolefin derived elastomer. The method includes transferring, via a line, the C4 to C7 isomonoolefin derived elastomer to a second reactor. The method includes introducing the C4 to C7 isomonoolefin derived elastomer with about 20 ppm to about 400 ppm structure III stabilizer, based on the amount of C4 to C7 isomonoolefm derived elastomer and structure III stabilizer. The method includes introducing the C4 to C7 isomonoolefin derived elastomer with a halogenating agent to form the halobutyl elastomer.

Dependencies are inferred from the claim text.