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    Process for producing 4,4′-dichlorodiphenyl sulfoxide
    13.
    发明授权
    Process for producing 4,4′-dichlorodiphenyl sulfoxide 有权

    公开(公告)号：US12168642B2

    公开(公告)日：2024-12-17

    申请号：US17429210

    申请日：2020-02-06

    Applicant: BASF SE

    Inventor： Jun Gao ,  Indre Thiel ,  Christian Schuetz ,  Lukas Metzger ,  Oliver Bey ,  Stefan Blei

    IPC: C07C315/00 ,  C07C315/02 ,  C07C315/06

    Abstract: The invention relates to a process for producing 4,4′-dichlorodiphenyl sulfoxide comprising: (I) reacting thionyl chloride, chlorobenzene and aluminum chloride in a molar ratio of thionyl chloride:chlorobenzene:aluminum chloride of 1:(6 to 9):(1 to 1.5) at a temperature in the range from 0 to below 20° C., forming an intermediate reaction product and hydrogen chloride; (II) mixing aqueous hydrochloric acid and the intermediate reaction product at a temperature in the range from 70 to 110° C. to obtain an organic phase comprising 4,4′-dichlorodiphenyl sulfoxide and an aqueous phase; (III) cooling the organic phase comprising the 4,4′-dichlorodiphenyl sulfoxide to a temperature below the saturation point of 4,4′-dichlorodiphenyl sulfoxide to obtain a suspension comprising crystallized 4,4′-dichlorodiphenyl sulfoxide; (IV) solid-liquid-separation of the suspension to obtain a residual moisture containing solid 4,4′-dichlorodiphenyl sulfoxide comprising crystallized 4,4′-dichlorodiphenyl sulfoxide and mother liquor.

    Process for the manufacturing of a polymer with urethane groups
    15.
    发明授权
    Process for the manufacturing of a polymer with urethane groups 有权

    公开(公告)号：US11780964B2

    公开(公告)日：2023-10-10

    申请号：US16639204

    申请日：2018-08-07

    Applicant: BASF SE

    Inventor： Peter Rudolf ,  Hans-Josef Thomas ,  Indre Thiel ,  Hannes Blattmann

    IPC: C08G71/04 ,  C07D327/04

    CPC classification number: C08G71/04 ,  C07D327/04

    Abstract: Process for the manufacturing of a polymer with urethane groups, wherein in a first alternative a compound A) with at least two five-membered cyclic monothiocarbonate groups and a compound B) with at least two amino groups, selected from primary or secondary amino groups and optionally a compound C) with at least one functional group that reacts with a group —SH are reacted or wherein in a second alternative a compound A) with at least two five-membered cyclic monothiocarbonate groups or a mixture of a compound A) with a compound A1) with one five-membered cyclic monothiocarbonate group and a compound B) with at least two amino groups, selected from primary or secondary amino groups or a compound B1) with one amino group selected from primary or secondary amino groups or mixtures of compounds B) and B1) and a compound C) with at least two functional groups that react with a group —SH or in case of a carbon-carbon triple bond as functional group that react with a group —SH, a compound C) with at least one carbon-carbon triple bond. are reacted.

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