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:
Nov. 26, 2013
Filed:
Sep. 26, 2012
Applicant:
E I Du Pont DE Nemours and Company, Wilmington, DE (US);
Inventor:
Robert D Lousenberg, Wilmington, DE (US);
Assignee:
E I du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 209/86 (2006.01); C07C 41/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
Disclosed are processes for reacting a perfluorinated olefin with an alcohol, an alkali metal hydroxide, and water in the presence of a phase transfer catalyst to form a reaction product mixture that separates into an aqueous phase and an organic phase. Alcohol may be present in an effective amount sufficient to form a third phase comprising at least 50% of the phase transfer catalyst. The third phase can be separated from the organic phase. Also disclosed are methods for recovering and recycling the phase transfer catalyst used in the reaction.