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:
Sep. 18, 2012
Filed:
May. 09, 2007
Bertrand Collier, Saint-genis-laval, FR;
Géraldine Cavallini, Saint-symphorien d'ozon, FR;
Béatrice Boussand, Sainte foy les Lyon, FR;
Bertrand Collier, Saint-genis-laval, FR;
Géraldine Cavallini, Saint-symphorien d'ozon, FR;
Béatrice Boussand, Sainte foy les Lyon, FR;
Arkema France, Colombes, FR;
Abstract
The invention relates to a method for producing pentafluoroethane, and especially to a method comprising (i) a step during which perchloroethylene and optionally 2,2-dichloro-1,1,1-trifluoroethane and/or 2-chloro-1,1,1,2-tetrafluoroethane react(s) with hydrofluoric acid in a gaseous phase in the presence of a catalyst in an adiabatic multi-stage reactor, and optionally (ii) a step of separating the flow produced in step (i) in order to obtain a fraction of light products and a fraction of heavy products.