The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 23, 2024
Filed:
Dec. 10, 2021
Arlanxeo Singapore Pte. Ltd., Singapore, SG;
Kai Cao, London, CA;
Gregory J. E. Davidson, London, CA;
ARLANXEO SINGAPORE PTE. LTD., Singapore, SG;
Abstract
A process for producing a halogenated isoolefin copolymer involves contacting an unsaturated isoolefin copolymer cement, the cement comprising an unsaturated isoolefin copolymer dissolved in an organic solvent, under halogenation conditions with a halogenating agent and an aqueous solution of a potassium salt-based oxidant to form a two-phase reaction medium comprising an organic phase and an aqueous phase, the oxidant capable of converting hydrogen halide to free halogen. The process provides improved halogen recovery, is less sensitive to the presence of water, and makes use of more stable and less environmentally damaging oxidants.