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:
Jun. 23, 2015
Filed:
Sep. 20, 2012
Anne Pigamo, Francheville, FR;
Nicolas Doucet, Lyons, FR;
Laurent Wendlinger, Soucieu en Jarrest, FR;
Anne Pigamo, Francheville, FR;
Nicolas Doucet, Lyons, FR;
Laurent Wendlinger, Soucieu en Jarrest, FR;
Arkema France, Colombes, FR;
Abstract
The present invention relates to a method for manufacturing 2,3,3,3-tetrafluoropropene from halopropanes having the formula CXCHCICHX and halopropenes having the formulas CXCCI═CHCCIXCCI═CHand CX═CCICHX, where X is independently a fluorine or chlorine atom. The invention specifically relates to a method including at least one step during which 2-chloro-3,3,3-trifluoro-1-propene, optionally mixed with at least one halopropane having the formula CXCHCICHX and/or at least one halopropene having the formulas CCIXCCI═CHand CX═CCICHX, where X is independently a fluorine or chlorine atom, reacts with HF in the gaseous phase in the presence of a fluoridation catalyst at a temperature of between 320 and 420° C. with a molar ratio of oxygen to 2-chloro-3,3,3-trifluoro-1-propene of more than 1 but no more than 2.5, and a molar ratio of HF to the total amount of organic compounds to be reacted of between 5 and 40.