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:
Nov. 06, 2012
Filed:
May. 14, 2009
Akihiro Ishii, Kawagoe, JP;
Manabu Yasumoto, Kawagoe, JP;
Akihiro Ishii, Kawagoe, JP;
Manabu Yasumoto, Kawagoe, JP;
Central Glass Company, Limited, Ube-shi, JP;
Abstract
Halogenated α-fluoroethers (or bis-derivatives thereof) can be produced by reacting a halogenated hemiacetal (or bis-derivative thereof) with sulfuryl fluoride (SOF) in the presence of an organic base. The reaction is conducted preferably in the presence of 'a salt or complex of an organic base with hydrogen fluoride', whereby the objective dehydroxyfluorination can proceed extremely favorably. It is still preferable to use as the starting substrate a halogenated hemiacetal prepared from fluoral or 3,3,3-trifluoropyruvic acid ester. Thus, industrially important halogenated α-fluoroethers can be industrially produced with high selectivity and in high yield.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile