Process for exhaustively decontaminating perfluoropolyethereal o

Details Process for exhaustively decontaminating perfluoropolyethereal o Process for exhaustively decontaminating perfluoropolyethereal o

1985-03-13

1986-05-27

Castel, Benoit

Liquid purification or separation

Processes

Utilizing electrical or wave energy directly applied to...

210750, 210753, 210754, 210758, 210908, 568677, C02F 132, C02F 176

Patent

active

045914443

ABSTRACT:
A process for fully removing from the perfluoropolyethers having a minimum vapor tension, the organic polluting matters containing group --OH and/or bonds ##STR1## consisting in treating the perfluoropolyether with oxygen, or chlorine or fluorine, at a high temperature and in the presence of ultraviolet radiations, in order to convert the impurities to volatile degradation products easily removable by degassing.

REFERENCES:
patent: 3901806 (1975-08-01), Murchison
patent: 4012321 (1977-03-01), Koubek
patent: 4118398 (1978-10-01), Martini
patent: 4201876 (1980-05-01), Griffin
patent: 4402836 (1983-09-01), Fochtman et al.

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