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1. (WO2017149255) AZEOTROPIC OR QUASI-AZEOTROPIC COMPOSITION COMPRISING TRIFLUOROPROPYNE

Pub. No.:    WO/2017/149255    International Application No.:    PCT/FR2017/050475
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Sat Mar 04 00:59:59 CET 2017
IPC: C07C 17/383
C07C 21/18
C07C 21/22
Applicants: ARKEMA FRANCE
Inventors: BABA-AHMED, Abdelatif
COLLIER, Bertrand
DEUR-BERT, Dominique
WENDLINGER, Laurent
Title: AZEOTROPIC OR QUASI-AZEOTROPIC COMPOSITION COMPRISING TRIFLUOROPROPYNE
Abstract:
The invention relates to an azeotropic or quasi-azeotropic composition comprising hydrochloric acid and trifluoropropyne. The invention also relates to a method for separating 2,3,3,3-tetrafluoropropene and trifluoropropyne from a composition A containing 2,3,3,3-tetrafluoropropene and trifluoropropyne, said method comprising the steps of bringing said composition A into contact with an inorganic compound in order to form a composition B; and distilling composition B in order to from a first flow B1 containing trifluoropropyne and the inorganic compound, and a second flow B2 containing 2,3,3,3-tetrafluoropropene.