Purification process

Details Purification process Purification process

C - Chemistry, Metallurgy

07

C

C07C 17/38 (2006.01) C07C 17/08 (2006.01) C07C 17/21 (2006.01) C07C 17/395 (2006.01) C07C 19/08 (2006.01)

Patent

CA 2063697

QM 36281 ABSTRACT PURIFICATION PROCESS 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°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.

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