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1. (WO2018060576) METHOD FOR PRODUCING 1-CHLORO-2,2-DIFLUOROETHANE

Pub. No.:    WO/2018/060576    International Application No.:    PCT/FR2017/052559
Publication Date: Fri Apr 06 01:59:59 CEST 2018 International Filing Date: Tue Sep 26 01:59:59 CEST 2017
IPC: C07C 17/20
C07C 19/12
Applicants: ARKEMA FRANCE
Inventors: GARRAIT, Dominique
HERDT, Charlotte
SCHERPEREEL, Camille
Title: METHOD FOR PRODUCING 1-CHLORO-2,2-DIFLUOROETHANE
Abstract:
The invention relates to a method for producing 1-chloro-2,2-difluoroethane from 1,1,2-trichloroethane, comprising at least one step of separating 1-chloro-2,2-difluoroethane from the organic phase produced during the method; said step comprising a) purification of the organic phase obtained in step (iii) so as to form a first stream comprising 1-chloro-difluoroethane and hydrofluoric acid and a second stream comprising 1,1,2-trichloroethane; b) the elimination of the hydrofluoric acid from said first stream in order to form a third stream comprising 1-chloro-difluoroethane; and c) a purification of said third stream comprising 1-chloro-difluoroethane.