Process for the production of fluoroethane and use of the same

Organic compounds -- part of the class 532-570 series – Organic compounds – Halogen containing

Reexamination Certificate

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C570S178000

Reexamination Certificate

active

07074974

ABSTRACT:
A process comprising fluorinating tetrachloroethylene to obtain a crude pentafluoroethane containing impurities and bringing the crude pentafluoroethane containing impurities into contact with oxygen and/or an oxygen-containing compound in the presence of a catalyst. There can be obtained high-purity pentafluoroethane which can be used as a low-temperature refrigerant or an etching gas or as a starting material for the production of high-purity hexafluoroethane.

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Yoshinaga, Masami et al. “Purification of hydrochlorofluorocarbons and hydrofluorocarbons.” Chemical Abstracts, May 10, 1993, vol. 118, No. 19, Columbus, Ohio.
Database WPI, Section Ch, Week 199734, Derwent Publications Ltd., London, GB, AN 1997-367579.
Foreign Office Action (with completed English translation).

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