EP 3655382 A1 20200527 - METHOD FOR THE PRODUCTION OF 2,3,3,3-TETRAFLUOROPROPENE
Title (en)
METHOD FOR THE PRODUCTION OF 2,3,3,3-TETRAFLUOROPROPENE
Title (de)
VERFAHREN ZUR HERSTELLUNG VON 2,3,3,3-TETRAFLUORPROPEN
Title (fr)
PROCEDE POUR LA PRODUCTION DE 2,3,3,3-TETRAFLUOROPROPENE
Publication
Application
Priority
- FR 1756728 A 20170717
- FR 2018051797 W 20180716
Abstract (en)
[origin: WO2019016458A1] The invention relates to a method for producing 2,3,3,3-tetrafluoropropene, comprising the following steps: i) in a first reactor, contacting 2-chloro-3,3,3-trifluoropropene with gas-phase hydrofluoric acid in the presence of a catalyst to produce a stream A comprising 2,3,3,3-tetrafluoropropene, HF and unreacted 2-chloro-3,3,3-trifluoropropene; ii) and, in a second reactor, contacting in gas phase, and optionally in the presence of a catalyst, hydrofluoric acid with at least one chlorinated compound selected from the group consisting of 1,1,1,2,3-pentachloropropane, 2,3-dichloro-1,1,1-trifluoropropane and,1,2,3-tetrachloropropene to produce a stream B comprising 2-chloro-3,3,3-trifluoropropene; characterised in that the stream A obtained in step i) feeds the second reactor used for step ii); and in that step i) is carried out at a temperature not exceeding the temperature at which step ii) is carried out.
IPC 8 full level
C07C 17/20 (2006.01); C07C 17/25 (2006.01); C07C 21/18 (2006.01)
CPC (source: EP US)
C07C 17/206 (2013.01 - EP US); C07C 17/25 (2013.01 - EP)
Citation (search report)
See references of WO 2019016458A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2019016458 A1 20190124; CN 110914227 A 20200324; EP 3655382 A1 20200527; FR 3068969 A1 20190118; FR 3068969 B1 20190726; US 10927060 B2 20210223; US 2020131104 A1 20200430
DOCDB simple family (application)
FR 2018051797 W 20180716; CN 201880046993 A 20180716; EP 18773791 A 20180716; FR 1756728 A 20170717; US 201816625809 A 20180716