Patent number: 10407369
Abstract: The invention relates to a process for producing 2,3,3,3-tetrafluoropropene performed using a starting composition, comprising the steps of placing the starting composition in contact with HF, in the presence of a catalyst, to produce a composition A comprising 2,3,3,3-tetrafluoropropene (1234yf), intermediate products B consisting of 2-chloro-3,3,3-trifluoropropene (1233xf), 1,1,1,2,2-pentafluoropropane (245cb), and side products C consisting of E-1-chloro-3,3,3-trifluoro-1-propene (1233zdE), trans-1,3,3,3-tetrafluoro-1-propene (1234zeE) and 1,1,1,3,3-pentafluoropropane (245fa); recovery of said composition A and purification thereof to form and recover a first stream comprising 2,3,3,3-tetrafluoropropene (1234yf) and one or more streams comprising 2-chloro-3,3,3-trifluoropropene (1233xf) and/or 1,1,1,2,2-pentafluoropropane (245cb); recycling into step a) of said one or more streams comprising 2-chloro-3,3,3-trifluoropropene (1233xf) and/or 1,1,1,2,2-pentafluoropropane (245cb).
Type:
Grant
Filed:
December 14, 2016
Date of Patent:
September 10, 2019
Assignee:
ARKEMA FRANCE
Inventors:
Bertrand Collier, Dominique Deur-Bert, Joaquin Lacambra, Laurent Wendlinger
Patent number: 10343963
Abstract: An azeotropic or quasi-azeotropic composition including hydrogen fluoride, E-3,3,3-trifluoro-1-chloropropene and optionally one or more (hydro)halogen-carbon compounds including between 1 and 3 carbon atoms. Also, a preferred azeotropic or quasi-azeotropic composition including hydrogen fluoride, E-3,3,3-trifluoro-1-chloropropene, and optionally one or more compounds selected from among 1,1,1,2,2-pentafluoropropane, 2,3,3,3-tetrafluoropropene, 3,3,3-trifluoropropene, 3,3,3-trifluoro-2-chloropropene, 1,3,3,3-tetrafluoropropene, trifluoropropyne, 1,1,1,3,3-pentafluoropropane, 1,1,1,3,3-pentafluoropropane, 1,1,1,3,3-pentafluoropropene, 1,1,1,2,3-pentafluoropropene and 2-chloro,1,1,1,2-tetrafluoropropane.
Type:
Grant
Filed:
August 13, 2018
Date of Patent:
July 9, 2019
Assignee:
ARKEMA FRANCE
Inventors:
Philippe Bonnet, Bertrand Collier, Dominque Deur-Bert, Laurent Wendlinger
Patent number: 10329227
Abstract: The present invention provides a process for preparing 2,3,3,3-tetrafluoropropene from 1,1,1,2,3-pentachloropropane and/or 1,1,2,2,3-pentachloropropane, comprising the following steps: (a) catalytic reaction of 1,1,1,2,3-pentachloropropane and/or 1,1,2,2,3-pentachloropropane with HF into a reaction mixture comprising HCl, 2-chloro-3,3,3-trifluoropropene, 2,3,3,3-tetrafluoropropene, unreacted HF, and optionally 1,1,1,2,2-pentafluoropropane; (b) separating the reaction mixture into a first stream comprising HCl and 2,3,3,3-tetrafluoropropene and a second stream comprising HF, 2-chloro-3,3,3-trifluoropropene and optionally 1,1,1,2,2-pentafluoropropane; (c) catalytic reaction of the second stream into a reaction mixture comprising 2,3,3,3-tetrafluoropropene, HCl, unreacted 2-chloro-3,3,3-trifluoropropene, unreacted HF and optionally 1,1,1,2,2-pentafluoropropane and (d) feeding the reaction mixture of step (c) directly without separation to step (a).
Type:
Grant
Filed:
July 19, 2018
Date of Patent:
June 25, 2019
Assignee:
ARKEMA FRANCE
Inventors:
Dominique Deur-Bert, Bertrand Collier, Laurent Wendlinger
Publication number: 20190127303
Abstract: The present invention provides a process of manufacture of 2,3,3,3-tetrafluoropropene by fluorination of very high purity 1,1,1,2,3-pentachloropropane (HCC-240db) into product 2,3,3,3-tetrafluoropropene (HFO-1234yf), the process comprising the following steps: —step 3 of chlorination of 1,1,3-trichloropropene to produce 1,1,1,2,3-pentachloropropane, comprising: 3-a) contacting the 1,1,3-trichloropropene feedstock with chlorine in a reaction zone to produce a reaction mixture containing 1,1,1,2,3-pentachloropropane and 1,1,3-trichloropropene, the reaction zone being different from the dehydrochlorination zone, and 3-b) treating the reaction mixture obtained in step 3-a) to obtain a 1,1,1,2,3-pentachloropropane (HCC-240db) feedstock; —step 4 of producing 2,3,3,3-tetrafluoropropene (HFO-1234yf), comprising: 4-a) reacting the 1,1,1,2,3-pentachloropropane (HCC-240db) feedstock with HF in the presence or absence of catalyst to produce a reaction mixture comprising at least one compound chosen from HCI, HF, 1,1,1,2,
Type:
Application
Filed:
April 13, 2016
Publication date:
May 2, 2019
Applicant:
Arkema France
Inventors:
Zdenek ONDRUS, Pavel KUBICEK, Karel FILAS, Petr SLADEK, Dominique DEUR-BERT, Laurent WENDLINGER
Patent number: 10266465
Abstract: An azeotropic or quasi-azeotropic composition including hydrogen fluoride, 1,3,3,3-tetrafluoropropene and one or more (hydro)halogen-carbon compounds including between 1 and 3 carbon atoms. Also, a preferred azeotropic or quasi-azeotropic composition comprising hydrogen fluoride, 1,3,3,3-tetrafluoropropene, and one or more compounds selected from among 1,1,1,2,2-pentafluoropropane, 2,3,3,3-tetrafluoropropene, 3,3,3-trifluoropropene, 3,3,3-trifluoro-2-chloropropene, E-3,3,3-trifluoro-1-chloropropene, trifluoropropyne, 1,1,1,3,3-pentafluoropropane, 1,1,3,3-pentafluoropropane, 1,1,1,3,3-pentafluoropropene, 1,1,1,2,3-pentafluoropropene and 2-chloro, 1,1,1,2-tetrafluoropropane.
Type:
Grant
Filed:
July 6, 2018
Date of Patent:
April 23, 2019
Assignee:
ARKEMA FRANCE
Inventors:
Philippe Bonnet, Bertrand Collier, Dominque Deur-Bert, Laurent Wendlinger
Patent number: 10252913
Abstract: An azeotropic or quasi-azeotropic composition including hydrogen fluoride, 2,3,3,3-tetrafluoropropene and one or more (hydro)halogen-carbon compounds including between 1 and 3 carbon atoms. Also a azeotropic or quasi-azeotropic composition including hydrogen fluoride, 2,3,3,3-tetrafluoropropene, and one or more organic compounds selected from among 1,1,1,2,2-pentafluoropropane, E-1,3,3,3-tetrafluoropropene, Z-1,3,3,3-tetrafluoropropene, 3,3,3-trifluoropropene, 3,3,3-trifluoro-2-chloropropene, E-3,3,3-trifluoro-1-chloropropene, trifluoropropyne, 1,1,1,3,3-pentafluoropropane, 1,1,1,3,3-pentafluoropropene, Z-1,1,1,2,3-pentafluoropropene and 2-chloro,1,1,1,2-tetrafluoropropane.
Type:
Grant
Filed:
February 21, 2014
Date of Patent:
April 9, 2019
Assignee:
ARKEMA FRANCE
Inventors:
Philippe Bonnet, Bertrand Collier, Dominique Deur-Bert, Laurent Wendlinger