Process for the purification of 1,1,1,2-tetrafluoroethane

A method for reducing the 1-chloro-2,2-difluoroethylene content of a mixture thereof with 1,1,1,2-tetrafluoroethane comprising heating the mixture with hydrogen fluoride in the liquid phase at a temperature in the range 50-180 DEG C and in the substantial absence of a fluorination catalyst. The mixt...

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Bibliographische Detailangaben
1. Verfasser:	SHIELDS, CHARLES JOHN
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS APPARATUS THEREFOR CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY GENERAL METHODS OF ORGANIC CHEMISTRY METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	A method for reducing the 1-chloro-2,2-difluoroethylene content of a mixture thereof with 1,1,1,2-tetrafluoroethane comprising heating the mixture with hydrogen fluoride in the liquid phase at a temperature in the range 50-180 DEG C and in the substantial absence of a fluorination catalyst. The mixture which is heated may be the product stream obtained by reaction of hydrogen fluoride with trichloroethylene and/or 1-chloro-2,2,2-trifluoroethane.