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. 06, 1990
Filed:
Feb. 08, 1985
Applicant:
Inventors:
Hubert Blancou, Montpellier, FR;
Auguste Commeyras, Clapiers, FR;
Robert Teissedre, Montpellier, FR;
Assignee:
Atochem, Courbevoie, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09F / ; C11C / ;
U.S. Cl.
CPC ...
260408 ; 562541 ; 570135 ; 570153 ;
Abstract
A process for preparing perfluoroalkanecarboxylic acids, wherein a perfluoroiodoalkane, R.sub.F I, is reacted with trichloroethylene in an acidic solvent in the presence of zinc, and the 2-perfluoroalkyl-1,1-dichloroethylene thus obtained is oxidized with the aid of permanganate, R.sub.F representing a straight chain or branched perfluoro radical containing one to 20 carbon atoms, together with certain novel perfluoroalkyldichloroethylenes having four or more carbon atoms so obtained.