Process for the purification of saturated hydrofluorocarbons

Details Process for the purification of saturated hydrofluorocarbons Process for the purification of saturated hydrofluorocarbons

1997-06-05

1998-09-01

Chang, Ceila

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

Organic compounds

Halogen containing

C07C 1720

Patent

active

058012940

ABSTRACT:
In order to remove olefinic impurities present in a hydrofluorocarbon such as pentafluoroethane (R-125), the impure hydrofluorocarbon is treated with oxygen in the absence of catalyst or of active charcoal.
The process is well suited to the purification of fluoroethanes and, more particularly, to that of pentafluoroethane.

REFERENCES:
patent: 3004908 (1961-10-01), Haszeldine
patent: 5001287 (1991-03-01), Fernanadez
patent: 5326918 (1994-07-01), Correia et al.
patent: 5430205 (1995-07-01), Cheminal et al.
French Search Report dated Jan. 22, 1997.

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