Method for purifying a fluorinated hydroxyl compound

Details Method for purifying a fluorinated hydroxyl compound Method for purifying a fluorinated hydroxyl compound

2005-08-16

2005-08-16

Price, Elvis O. (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

C568S841000

Reexamination Certificate

active

06930212

ABSTRACT:
The present invention has an object to provide a method for purifying a fluorinated hydroxyl compound of the formula 1 safely in a high yield under industrially practical conditions. Namely, a mixture containing a fluorinated hydroxyl compound of Rf—CR1R2—OH (Formula 1, wherein Rfis a C1-20polyfluoroalkyl group, and each of R1and R2is a hydrogen atom or a C1-3alkyl group) such as 2,2,3,3-tetrafluoropropanol, and a compound having an unshared electron pair, is distilled by heating in the presence of a solid acid catalyst such as a cation exchange resin catalyst, or by adding a proton source such as water.

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Derwent Publications, AN-1994-347078, XP-00222048, JP 6-271495 (Patent copy was filed on Feb. 20, 2002, submitting English Abstracts only).

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