Patent ID: 11919977
Assignee: ARLANXEO SINGAPORE PTE. LTD.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A process for the preparation of a chlorinated copolymer comprising at least the steps of:
polymerizing a copolymer from a reaction medium comprising:
an aliphatic medium including at least 50 weight percent of one or more aliphatic hydrocarbons, and
a monomer mixture comprising at least one isoolefin monomer and at least one multiolefin monomer,
in the presence of an initiator to form a product comprising the copolymer, the aliphatic medium, and residual monomers of the monomer mixture;

removing the residual monomer to obtain an organic phase comprising the copolymer and the aliphatic medium;
contacting the organic phase with hypochloric acid, dichlorine oxide, or an aqueous phase containing hypochloric acid or dichlorine oxide; and
reacting the copolymer in the organic phase
with hypochloric acid and or dichlorine oxide.