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:
Feb. 04, 2014
Filed:
Nov. 12, 2009
Applicants:
Maher Y. Elsheikh, Wayne, PA (US);
Philippe Bonnet, Lyons, FR;
John A. Wismer, Washington Crossing, PA (US);
Inventors:
Maher Y. Elsheikh, Wayne, PA (US);
Philippe Bonnet, Lyons, FR;
John A. Wismer, Washington Crossing, PA (US);
Assignee:
Arkema Inc., King of Prussia, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 17/20 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to a process for manufacturing 1,1,1,2-tetrafluoropropene (1234yf, CF—CF═CH) from 1,1,3,3-tetrachlororopropene (1230za, CCl═CH—CHCl) and/or 1,1,1,3,3-pentachloropropane (240fa, CClCHCHCl). The process comprises an isomerization step of 1-chloro-3,3,3 trifluoropropene (1233zd, CF—CH═CHCl) to 2-chloro-3,3,3 trifluoropropene (1233xf or CF—CCl═CH).