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:
Mar. 05, 2024
Filed:
Dec. 12, 2019
Applicant:
Arlanxeo Singapore Pte. Ltd., Singapore, SG;
Inventors:
Gregory J. E. Davidson, London, CA;
Kuruppu Jayatissa, London, CA;
Assignee:
ARLANXEO SINGAPORE PTE. LTD., Singapore, SG;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08C 19/12 (2006.01); C08F 8/20 (2006.01); C08F 210/12 (2006.01);
U.S. Cl.
CPC ...
C08C 19/12 (2013.01); C08F 8/20 (2013.01); C08F 210/12 (2013.01); C08F 2800/10 (2013.01); C08F 2810/50 (2013.01);
Abstract
The invention relates to an energy efficient, fast and environmentally favourable process for the preparation of chlorinated butyl rubbers, that uses hypochlorous acid (HOCl) and/or dichlorine monoxide (ClO) as halogenating agent. The process comprises reacting a copolymer with hypochlorous acid and/or dichlorine oxide. The copolymer comprises units derived from an isoolefin monomer and units derived from a multiolefin monomer. A preferred isoolefin is isobutene and a preferred multiolefin is isoprene.