Process for the purification of fluoromethyl hexafluoroisopropyl ether
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United States of America Patent
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Dec 26, 2006
Grant Date -
Jul 1, 2004
app pub date -
Dec 21, 2001
filing date -
Dec 21, 2000
priority date (Note) -
Expired
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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.
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