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:
Dec. 26, 2006
Filed:
Dec. 21, 2001
Applicants:
Andrew Paul Sharratt, Cheshire, GB;
Lee Colin Draper, Flintshire, GB;
Inventors:
Andrew Paul Sharratt, Cheshire, GB;
Lee Colin Draper, Flintshire, GB;
Assignee:
Ineos Fluor Holdings Limited, Runcorn, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 3/34 (2006.01); C07C 41/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process for the purification of fluoromethyl hexafluoroisopropyl ether which comprises contacting a crude composition comprising fluoromethyl hexafluoroisopropyl ether and hexafluoroisopropyl alcohol with a modifier in the presence of which the vapor pressure of the ether and/or the alcohol is modified whereby the difference in vapor pressure of the ether and the alcohol increases relative to the difference in vapor pressure of the ether and alcohol in the absence of the modifier and separating the ether from the alcohol.