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    Method for the production of 2,3,3,3-tetrafluoropropene
    2.
    发明授权
    Method for the production of 2,3,3,3-tetrafluoropropene 有权

    公开(公告)号：US10927060B2

    公开(公告)日：2021-02-23

    申请号：US16625809

    申请日：2018-07-16

    Applicant: Arkema France

    Inventor： Bertrand Collier ,  Dominique Deur-Bert ,  Anne Pigamo ,  Laurent Wendlinger

    IPC: C07C17/20

    Abstract: The present invention relates to a process for the production of 2,3,3,3-tetrafluoropropene comprising the stages:
    i) in a first reactor, bringing 2-chloro-3,3,3-trifluoropropene into contact with hydrofluoric acid in the gas phase in the presence of a catalyst, in order to produce a stream A comprising 2,3,3,3-tetrafluoropropene, HF and unreacted 2-chloro-3,3,3-trifluoropropene; and ii) in a second reactor, bringing hydrofluoric acid into contact, in the gas phase in the presence or absence of a catalyst, 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 1,1,2,3-tetrachloropropene, in order to produce a stream B comprising 2-chloro-3,3,3-trifluoropropene, characterized in that the stream A obtained in stage i) feeds said second reactor used for stage ii); and in that stage i) is carried out at a temperature which is lower than or equal to the temperature at which stage ii) is carried out.

    Method for the production and purification of 2,3,3,3-tetrafluoropropene
    3.
    发明授权
    Method for the production and purification of 2,3,3,3-tetrafluoropropene 有权

    公开(公告)号：US10766837B2

    公开(公告)日：2020-09-08

    申请号：US16606783

    申请日：2018-04-20

    Applicant: Arkema France

    Inventor： Dominique Deur-Bert ,  Anne Pigamo ,  Laurent Wendlinger

    IPC: C07C17/20 ,  C07C17/383

    Abstract: The invention refers to a process for the production of 2,3,3,3-tetrafluoropropene carried out starting from a starting composition comprising the stages of bringing the starting composition into contact, in the presence of a catalyst, with HF in order to produce a composition A comprising 2,3,3,3-tetrafluoropropene (HFO-1234yf), intermediate products B consisting of 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf), 1,1,1,2,2-pentafluoropropane (HFC-245cb), and byproducts C consisting of E-1-chloro-3,3,3-trifluoro-1-propene (HCFO-1233zdE), trans-1,3,3,3-tetrafluoro-1-propene (HFO-1234zeE) and 1,1,1,3,3-pentafluoropropane (HFC-245fa); recovery of said composition A and purification of the latter in order to form and recover a first gas stream G1 comprising HCl, 2,3,3,3-tetrafluoropropene (HFO-1234yf), a part of the unreacted HF, a part of the intermediate products B and a part of the byproducts C; and a stream, which is preferably liquid, L1 comprising a part of the unreacted HF, a part of the intermediate products B and a part of the byproducts C.

    Method for producing and purifying 2,3,3,3-tetrafluoro-1-propene
    5.
    发明授权
    Method for producing and purifying 2,3,3,3-tetrafluoro-1-propene 有权

    公开(公告)号：US10479746B2

    公开(公告)日：2019-11-19

    申请号：US16064013

    申请日：2016-12-14

    Applicant: Arkema France

    Inventor： Abdelatif Baba-Ahmed ,  Bertrand Collier ,  Dominique Deur-Bert ,  Laurent Wendlinger

    IPC: C07C17/386 ,  C07C17/25 ,  B01D3/40 ,  C09K5/04

    Abstract: The present invention concerns a method for purifying 2,3,3,3-tetrafluoro-1-propene (1234yf) from a first composition comprising 2,3,3,3-tetrafluoro-1-propene and at least one of the compounds chosen from the group consisting of 1,1-difluoroethane (152a), chloropentafluoroethane (115), and trans-1,3,3,3-tetrafluoro-1-propene (1234ze-E) said method comprising the steps consisting of: a) bringing said first composition into contact with at least one organic extractant 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 extractant and said at least one of the compounds chosen from the group consisting of 1,1-difluoroethane (152a) chloropentafluoroethane (115), and trans-1,3,3,3-tetrafluoro-1-propene (1234ze-E); and ii) a stream comprising 2,3,3,3-tetrafluoro-1-propene. The invention also concerns a method for producing and purifying 2,3,3,3-tetrafluoro-1-propene.

    Process for the preparation of 2,3,3,3-tetrafluoropropene
    6.
    发明授权
    Process for the preparation of 2,3,3,3-tetrafluoropropene 有权

    公开(公告)号：US10329227B2

    公开(公告)日：2019-06-25

    申请号：US16039447

    申请日：2018-07-19

    Applicant: Arkema France

    Inventor： Dominique Deur-Bert ,  Bertrand Collier ,  Laurent Wendlinger

    IPC: C07C17/20 ,  C07C17/25 ,  C07C17/383 ,  C01B7/19 ,  B01J37/12 ,  B01J37/24 ,  B01J37/26 ,  B01J23/26 ,  B01J23/86 ,  B01J27/132 ,  C07C17/38

    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).

    Composition comprising HF and 2,3,3,3-tetrafluoropropene
    7.
    发明授权
    Composition comprising HF and 2,3,3,3-tetrafluoropropene 有权

    公开(公告)号：US10252913B2

    公开(公告)日：2019-04-09

    申请号：US14772950

    申请日：2014-02-21

    Applicant: ARKEMA FRANCE

    Inventor： Philippe Bonnet ,  Bertrand Collier ,  Dominique Deur-Bert ,  Laurent Wendlinger

    IPC: C01B7/19 ,  C07C19/08 ,  C07C21/18

    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.

    Compositions containing 1,1,1,3,3-pentachloropropane
    8.
    发明授权
    Compositions containing 1,1,1,3,3-pentachloropropane 有权

    公开(公告)号：US10207969B2

    公开(公告)日：2019-02-19

    申请号：US15518607

    申请日：2015-10-07

    Applicant: Arkema France

    Inventor： Anne Pigamo ,  Dominique Deur-Bert ,  Laurent Wendlinger ,  Bertrand Collier

    IPC: C07C17/20 ,  C07C19/01

    Abstract: The invention first relates to a composition comprising at least 99 wt. % of 1,1,1,3,3-pentachloropropane and at least one compound selected from a list of additional compounds consisting of dichloropropanes, trichloropropanes, tetrachloropropanes, pentachloropropanes different from 1,1,1,3,3-pentachloropropane, hexachloropropanes, heptachloropropanes, chloropropenes, dichloropropenes, trichloropropenes, tetrachloropropenes, pentachloropropenes and hexachloropropene, the weight content of said compound in the composition being lower than or equal to 500 ppm.

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