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, 2020
Filed:
Jul. 14, 2016
Mexichem Fluor S.a. DE C.v., San Luis Potosi, MX;
Emma Jayne Hodgson, Cheshire, GB;
Claire Elizabeth McGuinness, Cheshire, GB;
Clive Robert Giddis, Cheshire, GB;
James Henry Murray, Cheshire, GB;
Clare Mary Skae, Cheshire, GB;
Gary Lloyd, Cheshire, GB;
MEXICAN FLUOR S.A. DE C.V., San Luis Potosi, MX;
Abstract
The present invention provides a process for preparing 3,3,3-trifluoropropene (1243zf), the process comprising: (a)fluorinating CClCHCHCI (250fb) to produce a reaction product comprising CFCHCHCI (253fb) in the liquid phase in a first reactor, using HF as the fluorinating agent; and (b)(i) dehydrohalogenating 253fb to produce 1243zf in the vapour phase in the presence of a catalyst in a second reactor; or (b)(ii) dehydrohalogenating 253fb to produce 1243zf in a second reactor, wherein the reaction product comprising 253fb produced in step (a) has subjected to one or more purification steps before step (b). The present invention also provides an azeotropic or near-azeotropic composition comprising HF and 253fb.