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1. (WO2018085512) PROCESS FOR REDUCING 3,3,3-TRIFLUOROPROPYNE IN 2,3,3,3-TETRAFLUOROPROPENE

Pub. No.:    WO/2018/085512    International Application No.:    PCT/US2017/059679
Publication Date: Sat May 12 01:59:59 CEST 2018 International Filing Date: Fri Nov 03 00:59:59 CET 2017
IPC: C07C 17/42
C07C 21/185
C07C 21/22
Applicants: HONEYWELL INTERNATIONAL INC.
Inventors: WANG, Haiyou
TUNG, Hsueh Sung
PEREZ, Willie Josue
ZHAI, Yian
BOROWSKI, Ralph John
TU, Fang Huang
LABUDA, Lucas Peter
WELCH, John L.
Title: PROCESS FOR REDUCING 3,3,3-TRIFLUOROPROPYNE IN 2,3,3,3-TETRAFLUOROPROPENE
Abstract:
The invention relates to a process for reducing the concentration of a fluorinated alkyne impurity, such as 3,3,3-trifluoropropyne (TFPY), in 2,3,3,3-tetrafluoropropene (HFO-1234yf) which comprises contacting such a mixture with a caustic material, such as sodium hydroxide (NaOH), under conditions effective to reduce the concentration of the fluorinated alkyne impurity, including in some practices reducing the concentration by at least about 50%.