Title:
METHOD FOR PRODUCING 2, 3, 3, 3-TETRAFLUOROPROPENE
Document Type and Number:
WIPO Patent Application WO/2017/119273
Kind Code:
A1
Abstract:
Provided is a production method by which 2, 3, 3, 3-tetrafluoropropene is stably produced for a long time, while suppressing deactivation of a catalyst.
A method for producing 2, 3, 3, 3-tetrafluoropropene, which comprises (d) a step d for causing 2-chloro-3, 3, 3-trifluoropropene to react with hydrogen fluoride in the presence of a catalyst, (e) a step e for subjecting the reaction mixture obtained in the step d to distillation, thereby separating the reaction mixture into a first stream that is mainly composed of 2, 3, 3, 3-tetrafluoropropene and a second stream that is mainly composed of an organic material containing unreacted 2-chloro-3, 3, 3-trifluoropropene and unreacted hydrogen fluoride, and (f) a step f for recycling the second stream separated in the step e for the reaction in the step d. In this method, distillation in the step e is carried out under conditions that satisfy a specific relational expression.
Inventors:
TAKAKUWA TATSUYA (JP)
TAKAHASHI KAZUHIRO (JP)
KARUBE DAISUKE (JP)
CHAKI TAKEHIRO (JP)
KISHIMOTO MASAYUKI (JP)
KOMATSU YUZO (JP)
TAKAHASHI KAZUHIRO (JP)
KARUBE DAISUKE (JP)
CHAKI TAKEHIRO (JP)
KISHIMOTO MASAYUKI (JP)
KOMATSU YUZO (JP)
Application Number:
PCT/JP2016/087804
Publication Date:
July 13, 2017
Filing Date:
December 19, 2016
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
International Classes:
C07C17/383; C07C17/25; C07C21/18; C07B61/00
Domestic Patent References:
| WO2016009774A1 | 2016-01-21 | |||
| WO2008002499A2 | 2008-01-03 |
Foreign References:
| JP2014500858A | 2014-01-16 | |||
| US20110160497A1 | 2011-06-30 | |||
| JP2013510075A | 2013-03-21 | |||
| JP2011513227A | 2011-04-28 | |||
| JP2015522521A | 2015-08-06 | |||
| US2996555A | 1961-08-15 |
Other References:
See also references of EP 3401297A4
Attorney, Agent or Firm:
SAEGUSA & PARTNERS (JP)
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