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    PROCESS FOR THE MANUFACTURING OF ALKANESULFONIC ACIDS
    1.
    发明申请
    PROCESS FOR THE MANUFACTURING OF ALKANESULFONIC ACIDS 有权

    公开(公告)号：US20210094908A1

    公开(公告)日：2021-04-01

    申请号：US16963748

    申请日：2019-01-30

    Applicant: BASF SE

    Inventor： Frieder BORGMEIER ,  Jan SPIELMANN ,  Michael ZEILINGER ,  Juergen WORTMANN

    IPC: C07C303/14 ,  C07C303/44

    Abstract: A process for manufacturing of an alkanesulfonic acid, and an alkanesulfonic acid manufactured by the process. Aspects of the process may involve manufacturing an alkanesulfonic acid by reaction of an initiator composition with an alkane and sulfur trioxide by preparing an initiator composition by reacting aqueous hydrogen peroxide with alkanesulfonic acid and/or H2SO4; and reacting the initiator composition with sulfur trioxide and alkane to form an alkanesulfonic acid, wherein an alkane with a purity of at least 98.0 mol-% is used.

    PROCESS FOR PURIFYING ALKANESULFONIC ACIDS
    4.
    发明申请
    PROCESS FOR PURIFYING ALKANESULFONIC ACIDS 审中-公开

    公开(公告)号：US20180319739A1

    公开(公告)日：2018-11-08

    申请号：US15774847

    申请日：2016-11-08

    Applicant: BASF SE

    Inventor： Jan SPIELMANN ,  Michael KOCH ,  Juergen WORTMANN ,  Feelly RUETHER ,  Sabine WEIGUNY ,  Frieder BORGMEIER

    IPC: C07C303/44 ,  B01D9/00 ,  B01D3/00 ,  B01D3/14

    Abstract: The invention relates to a process for purifying alkanesulfonic acids which comprises the steps of: (a) distilling a melt comprising crude alkanesulfonic acid (1) to completely or partly remove low boilers, wherein the low boilers are drawn off at the top of a distillation column (3) or of a one-stage evaporation apparatus and a material stream (7) comprising alkanesulfonic acid, high boilers and residual low boilers is withdrawn at the bottom of the distillation column (3) or of the one-stage evaporation apparatus, (b) sending the stream (7) comprising alkanesulfonic acid, high boilers and residual low boilers into a melt crystallization (9) as the starting melt to form crystals of the alkanesulfonic acid, of hydrates of the alkanesulfonic acid or of a mixture of both suspended in mother liquor, (c) performing a solid-liquid separation to remove the crystals from the mother liquor, (d) optionally washing the crystals to remove mother liquor adhering to the crystals.

    PROCESS FOR PRODUCING ALKYL SULFONIC ACID
    5.
    发明申请
    PROCESS FOR PRODUCING ALKYL SULFONIC ACID 有权

    公开(公告)号：US20250162984A1

    公开(公告)日：2025-05-22

    申请号：US18839587

    申请日：2023-02-15

    Applicant: BASF SE

    Inventor： Brigitte ZEPP ,  Christian DIENES ,  Frieder BORGMEIER ,  Simon REIFEGERSTE ,  Jan SPIELMANN

    IPC: C07C303/16

    Abstract: The invention relates to a process for producing alkyl sulfonic acid in a reaction apparatus (41) which contains a liquid phase comprising aqueous nitric acid, wherein dialkyl disulfide is fed into the liquid phase in the reaction apparatus (41) and a crude reaction product is formed in the reaction apparatus (41) by chemical reaction of the dialkyl disulfide with the nitric acid, wherein feeding the dialkyl disulfide comprises at least one of: the liquid dialkyl disulfide is fed into the reaction apparatus (41) through an orifice (28, 29; 33) having a hydraulic diameter of less than 5 mm; the liquid dialkyl disulfide is fed into the reaction apparatus (41) with an inlet velocity of at least 0.6 m/s.

    PROCESS FOR THE MANUFACTURING OF METHANE SULFONIC ACID
    6.
    发明申请
    PROCESS FOR THE MANUFACTURING OF METHANE SULFONIC ACID 审中-公开

    公开(公告)号：US20200216388A1

    公开(公告)日：2020-07-09

    申请号：US16614599

    申请日：2018-05-23

    Applicant: BASF SE

    Inventor： Jan SPIELMANN ,  Michael ZEILINGER ,  Juergen WORTMANN ,  Frieder BORGMEIER

    IPC: C07C303/06 ,  C07C309/04 ,  C07C303/44

    Abstract: The present invention relates to a process for the manufacturing of methane sulfonic acid (MSA) by reaction of a radical initiator composition with methane and sulfur trioxide comprising the steps (a) preparation of the intiator composition by reacting aqueous hydrogen peroxide with the components methane sulfonic acid and methane sulfonic acid anhydride and (b) reaction of the initiator composition from step (a) with sulfur trioxide and methane to form methane sulfonic acid. The invention further relates to the use of methane sulfonic acid anhydride (MSA anhydride) in said process and to methane sulfonic acid manufactured by said process.

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