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    METHOD FOR DRYING AND PURIFYING LiFSI
    82.
    发明申请
    METHOD FOR DRYING AND PURIFYING LiFSI 有权

    公开(公告)号：US20210323823A1

    公开(公告)日：2021-10-21

    申请号：US17358819

    申请日：2021-06-25

    申请人： Arkema France

    发明人： Grégory SCHMIDT ,  Rémy TEISSIER

    IPC分类号： C01B21/086 ,  B01D1/22 ,  H01M10/0525 ,  H01M10/0568 ,  C01B21/093

    摘要： A method for drying and purifying a lithium bis(fluorosulfonyl)imide salt in solution in an organic solvent S1, the method including the following steps: a) adding deionised water to dissolve and extract the lithium bis(fluorosulfonyl)imide salt, forming an aqueous solution of the salt; b) extracting the lithium bis(fluorosulfonyl)imide salt from the aqueous solution, using an organic solvent S2, the step being repeated at least once; c) concentrating the lithium bis(fluorosulfonyl)imide salt by evaporating the organic solvent S2 and the water, in a short-path thin-film evaporator, under the following conditions: temperature of 30° C. to 95° C., pressure of 10−3 mbar abs to 5 mbar abs, residence time no longer than 15 min; and d) optionally crystallising the lithium bis(fluorosulfonyl)imide salt. Also, a composition made of lithium bis(fluorosulfonyl)imide salt, and the uses thereof in Li-ion batteries.

    Lithium salt mixture and uses thereof as a battery electrolyte
    84.
    发明授权
    Lithium salt mixture and uses thereof as a battery electrolyte 有权

    公开(公告)号：US11139508B2

    公开(公告)日：2021-10-05

    申请号：US16500011

    申请日：2018-04-03

    申请人： Arkema France

    发明人： Grégory Schmidt

    IPC分类号： H01M10/0567 ,  H01M10/0569 ,  H01M4/02

    摘要： A lithium salt mixture comprising: from 85% to 99.9 mol % of lithium bis(fluorosulfonyl)imidide; and from 0.1% to 15 mol % of lithium 2-trifluoromethyl-4,5-dicyano-imidazolate. Also, an electrolyte composition containing same and to the uses thereof. Also, an electrochemical cell including a negative electrode, a positive electrode and the electrolyte composition interposed between the negative electrode and the positive electrode. Also, a battery containing at least one electrochemical cell with the electrolyte composition.

    Integrated electrode separator assemblies for lithium ion batteries
    85.
    发明授权
    Integrated electrode separator assemblies for lithium ion batteries 有权

    公开(公告)号：US11133562B2

    公开(公告)日：2021-09-28

    申请号：US14410674

    申请日：2013-11-01

    申请人： Arkema Inc.

    发明人： John Schmidhauser ,  Scott R. Gaboury ,  Ramin Amin-Sanayei ,  Christophe Roger ,  Wensheng He ,  Rosemary Heinze

    IPC分类号： H01M50/46 ,  H01G11/52 ,  H01M50/403 ,  H01M50/411 ,  H01M50/449 ,  H01M50/446

    摘要： The invention relates to integrated electrode separators (IES), and their use in lithium ion batteries as replacements for free standing separators. The IES results from coating an electrode with a fluoropolymer aqueous-based emulsion or suspension, and drying the coating to produce a tough, porous separator layer on the electrodes. The aqueous fluoropolymer coating may optionally contain dispersed inorganic particles and other additives to improve electrode performance such as higher ionic conduction or higher temperature use. The IES provides several advantages, including a thinner, more uniform separator layer, and the elimination of a separate battery component (separator membrane) for a simpler and cost-saving manufacturing process. The aqueous separator coating can be used in combination with a solvent cast electrode as well as an aqueous cast electrode either in two separate process steps, or in a one-step process.

    Method for preparing methyl mercaptan
    88.
    发明授权
    Method for preparing methyl mercaptan 有权

    公开(公告)号：US11104642B2

    公开(公告)日：2021-08-31

    申请号：US16869826

    申请日：2020-05-08

    申请人： Arkema France

    发明人： Georges Fremy ,  Patrice Barre ,  Jean-Michel Raymond

    IPC分类号： C07C319/06 ,  C07C319/24 ,  C07C319/02 ,  C01B32/75

    摘要： The present invention relates to a method for preparing methyl mercaptan, in batches or continuously, preferably continuously, said method including at least the following steps: a) reacting at least one hydrocarbon feedstock in the presence of hydrogen sulphide (H2S) and optionally sulphur (S) such as to form carbon disulphide (CS2) and hydrogen (H2); b) reacting said carbon disulphide (CS2) by hydrogenation in the presence of said hydrogen (H2) obtained in step a) such as to form methyl mercaptan (CH3SH), hydrogen sulphide (H2S) and possibly hydrogen (H2); c) optionally recirculating said hydrogen sulphide (H2S) formed during step b) to step a); and d) recovering the methyl mercaptan.

    METHOD FOR PRODUCING A COPOLYMER FOAM WITH POLYAMIDE BLOCKS AND POLYETHER BLOCKS
    89.
    发明申请
    METHOD FOR PRODUCING A COPOLYMER FOAM WITH POLYAMIDE BLOCKS AND POLYETHER BLOCKS 有权

    公开(公告)号：US20210261745A1

    公开(公告)日：2021-08-26

    申请号：US17256721

    申请日：2019-07-02

    申请人： Arkema France

    发明人： Clio COCQUET ,  Helena CHEMINET ,  Yves DEYRAIL ,  Audrey DURIN ,  Marc MIRALLES

    IPC分类号： C08J9/00 ,  C08J9/12 ,  B29C44/02 ,  B29C44/04 ,  B29C44/34

    摘要： The invention relates to a process for manufacturing a copolymer foam containing polyamide blocks and polyether blocks, comprising the following steps: mixing the copolymer melt with a blowing agent, said copolymer having a coefficient of thermal diffusivity a and a crystallization temperature Tc; providing a mold of thickness h at a temperature Tm; injecting the mixture of the copolymer and of the blowing agent at a temperature Tp, into the closed mold; foaming the mixture by opening the mold; in which the maintenance time between the injection of the mixture of the copolymer and of the blowing agent into the closed mold and the opening of the mold is within the range extending from (topt−25%) to (topt+25%), topt being expressed in seconds and obtained by equation (I): t opt = - 1 π 2 ⁢ h 2 a ⁢ ln ⁡ ( π 4 ⁢ T m - T c T m - T p ) , ( I ) in which a is expressed in m2/s, h is expressed in m and Tm, Tc and Tp are expressed in ° C.

    METHOD FOR PRODUCING 2-CHLORO-3,3,3-TRIFLUOROPROPENE AND FACILITY FOR IMPLEMENTING SAME
    90.
    发明申请
    METHOD FOR PRODUCING 2-CHLORO-3,3,3-TRIFLUOROPROPENE AND FACILITY FOR IMPLEMENTING SAME 有权

    公开(公告)号：US20210261486A1

    公开(公告)日：2021-08-26

    申请号：US16973192

    申请日：2019-06-06

    申请人： ARKEMA FRANCE

    发明人： Bertrand COLLIER ,  Dominique DEUR-BERT ,  Anne PIGAMO ,  Audrey RIEHL ,  Laurent WENDLINGER

    IPC分类号： C07C17/25 ,  C07C17/35 ,  B01J19/02 ,  C07C17/20

    摘要： The present invention relates to a process for producing 2-chloro-3,3,3-trifluoropropene, comprising the steps: i) providing a stream A comprising at least one chlorinated compound selected from the group consisting of 2,3-dichloro-1,1,1-trifluoropropane, 1,1,1,2,3-pentachloropropane, 1,1,2,3-tetrachloropropene and 2,3,3,3-tetrachloropropene; and ii) in an adiabatic reactor comprising a fixed bed composed of an inlet and an outlet, bringing said stream A into contact, in the presence or absence of a catalyst, with HF in order to produce a stream B comprising 2-chloro-3,3,3-trifluoropropene, characterized in that the temperature at the inlet of the fixed bed of said adiabatic reactor is between 300° C. and 400° C. and the longitudinal temperature difference between the inlet of the fixed bed and the outlet of the fixed bed of said reactor is less than 20° C.