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:
Oct. 01, 1991
Filed:
Dec. 20, 1989
Applicant:
Inventors:
Bernard Cheminal, Brignais, FR;
Jean-Marie Cognion, Saint-Genis Laval, FR;
Dominique Guillet, Saint-Genis Laval, FR;
Assignee:
Societe Atochem, Puteaux, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
570176 ;
Abstract
The invention relates to the manufacture of chlorofluoroethanes of formula CF.sub.3 --CHF.sub.x Cl.sub.2-x, where x is equal to 0 or 1, by the catalytic hydrogenation of a perhaloethane of formula: CF.sub.3 --CF.sub.x Cl.sub.3-x. The use of a ruthenium-based catalyst deposited on a support enables the selectivity to be improved.