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. 01, 1997
Filed:
Nov. 17, 1995
Applicant:
Inventors:
Frederick E Behr, Woodbury, MN (US);
Yuri Cheburkov, Woodbury, MN (US);
Assignee:
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
562851 ;
Abstract
A process for preparing fluorocarboxylic acid halides comprises the steps of (a) forming a starting composition comprising (i) at least one fluorosulfonic acid halide comprising at least one halosulfonyldifluoromethyl group (--Cf.sub.2 SO.sub.2 X, wherein X is halogen); and (ii) at least one Group III or Group V Lewis acid; and (b) allowing the fluorosulfonic acid halide and the Lewis acid to react to form a product composition comprising at least one fluorocarboxylic acid halide. The process enables the preparation of even higher molecular weight fluorocarboxylic acid halides in good yield.