Process for obtaining a purified hydrofluoroalkane

Details Process for obtaining a purified hydrofluoroalkane Process for obtaining a purified hydrofluoroalkane

2007-01-03

2008-12-23

Sullian, Daniel M (Department: 1621)

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

Organic compounds

Halogen containing

C570S178000

Reexamination Certificate

active

07468467

ABSTRACT:
Process for obtaining a hydrofluoroalkane which is purified of organic impurities, according to which the hydrofluoroalkane containing organic impurities is subjected to at least one purification treatment chosen from(a) a treatment with chlorine in the presence of a initiator(b) a reaction with hydrogen fluoride(c) a distillation in which the purified hydrofluoroalkane is removed from the top of the distillation column or from the side(d) an extractive distillation(e) an adsorption onto a solid adsorbent(f) a reaction with a compound containing oxygen, and(g) a reaction with a compound containing oxygen and a gas-phase reaction with a reagent capable of reacting with at least some of the organic impurities, with the exception of a reaction with elemental chlorine.

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