METHOD OF REPROCESSING ALKANESULFONIC ACID
    2.
    发明申请

    公开(公告)号:US20180327352A1

    公开(公告)日:2018-11-15

    申请号:US15774722

    申请日:2016-11-08

    Applicant: BASF SE

    CPC classification number: C07C303/44 C07C309/04

    Abstract: The invention relates to a method of reprocessing alkanesulfonic acid employed in a chemical process as an agent, catalyst or solvent and comprising the steps of: (a) removing an alkanesulfonic acid-comprising stream from a reaction mixture generated in the chemical process, (b) feeding the alkanesulfonic acid-comprising stream into a melt crystallization 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, (e) recycling the washed or unwashed crystals removed from the mother liquor into the chemical process.

    PROCESS FOR PURIFYING ALKANESULFONIC ACIDS
    3.
    发明申请

    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

    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apparatus and a material stream (7) comprising alkanesulfonic acid, high boilers and residual low boilers is withdrawn at the bottom of the distillation column (3) or of the one-stage evaporation apparatus, (b) sending the stream (7) comprising alkanesulfonic acid, high boilers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 THE MANUFACTURING OF METHANE SULFONIC ACID

    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

    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.

    PROCESS FOR THE MANUFACTURING OF ALKANESULFONIC ACIDS

    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

    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 THE OXIDATION OF SULFOXIDES
    10.
    发明申请
    PROCESS FOR THE OXIDATION OF SULFOXIDES 审中-公开
    硫氧化物氧化过程

    公开(公告)号:US20160122296A1

    公开(公告)日:2016-05-05

    申请号:US14894432

    申请日:2014-05-28

    Applicant: BASF SE

    CPC classification number: C07C315/02 B01J29/89 C07C315/06 C07C317/14

    Abstract: The present invention relates to a process for oxidizing a sulfoxide to the respective sulfone, said process comprising reacting the sulfoxide with hydrogen peroxide in the presence of a catalyst, obtaining a mixture (M) comprising the sulfone and the catalyst, wherein the catalyst comprises a porous titanium-containing silicate as a catalytically active material.

    Abstract translation: 本发明涉及将亚砜氧化成各种砜的方法,所述方法包括在催化剂存在下使亚砜与过氧化氢反应,得到包含砜和催化剂的混合物(M),其中催化剂包含 多孔含钛硅酸盐作为催化活性材料。

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