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

Claim 16:
17. A process for the preparation of a chlorinated copolymer comprising at least the step of reacting a copolymer comprising
i) structural units derived from at least one isoolefin monomer and
ii) structural units derived from at least one multiolefin monomer
with hypochloric acid and or dichlorine oxide;
wherein the multi-olefin includes isoprene;
wherein the chlorinated copolymer comprises 1-(1-chloromethylethenyl)-2,2,4,4-tetramethylcyclohexane (C1-C13) and 1,1,5,5-tetramethyl-2-(1-chloromethylethenyl)-3-(2,2,4-trimethylpentyl)-cyclohexane (C1-C21) in a ratio (C1-C13)/(C1-C21) of 0.60 or more.