- Patent Title: Method for producing and purifying 2,3,3,3-tetrafluoro-1-propene
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Application No.: US16063712Application Date: 2016-12-14
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Publication No.: US10899688B2Publication Date: 2021-01-26
- Inventor: Abdelatif Baba-Ahmed , Bertrand Collier , Dominique Deur-Bert , Laurent Wendlinger
- Applicant: Arkema France
- Applicant Address: FR Colombes
- Assignee: Arkema France
- Current Assignee: Arkema France
- Current Assignee Address: FR Colombes
- Agency: NK Patent Law
- Priority: FR1563165 20151223
- International Application: PCT/EP2016/080945 WO 20161214
- International Announcement: WO2017/108519 WO 20170629
- Main IPC: C07C17/386
- IPC: C07C17/386 ; C07C17/383 ; C07C17/38 ; C07C21/18 ; C07C19/03 ; C07C19/08 ; C07C19/10 ; C09K5/04

Abstract:
The invention relates to a method for producing and purifying 2,3,3,3-tetrafluoro-1-propene using a first composition comprising 2,3,3,3-tetrafluoro-1-propene, 3,3,3-trifluoropropene (1243zf), and trans-1,3,3,3-tetrafluoro-1-propene (1234ze-E), said method comprising the steps of: (a) bringing said first composition into contact with at least one organic extraction agent in order to form a second composition; (b) extractive distillation of said second composition in order to form (i) a third composition comprising said organic extraction agent, 3,3,3-trifluoropropene (1243zf), and trans-1,3,3,3-tetrafluoro-1-propene (1234ze-E), and (ii) a stream comprising the 2,3,3,3-tetrafluoro-1-propene; and (c) recovery and separation of said third composition in order to form a stream comprising said organic extraction agent and a stream comprising 3,3,3-trifluoropropene (1243zf) and trans-1,3,3,3-tetra-fluoro-1-propene (1234ze-E).
Public/Granted literature
- US20200165180A1 METHOD FOR PRODUCING AND PURIFYING 2,3,3,3-TETRAFLUORO-1-PROPENE Public/Granted day:2020-05-28
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