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:
Aug. 03, 1999
Filed:
Nov. 06, 1996
Applicant:
Inventors:
Bernard Cheminal, 69530 Brignais, FR;
Eric Lacroix, 69008, Lyon, FR;
Andre Lantz, 69390 Vernaison, FR;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
570168 ; 570169 ;
Abstract
The invention relates to catalytic fluorination of perchloroethylene or of pentachloroethane in the gas phase by means of hydrofluoric acid. A mixed catalyst is employed, made up of nickel and chromium oxides, halides and/or oxyhalides deposited on a support consisting of aluminium fluoride or of a mixture of aluminium fluoride and alumina.