METHOD FOR PURIFICATION OF ISOSORBIDE
    1.
    发明申请

    公开(公告)号:WO2021032519A1

    公开(公告)日:2021-02-25

    申请号:PCT/EP2020/072356

    申请日:2020-08-10

    Applicant: BASF SE

    Abstract: The invention relates to a process for purifying a crude isosorbide, in which the crude isosorbide is melted and converted, by cooling, into a crude isosorbide melt suspension consisting of isosorbide crystals and residual melt, the amount by weight of impurities in the isosorbide crystals being less than the amount by weight of impurities in the residual melt, optionally a part of the residual melt is separated off mechanically from the crude isosorbide suspension, further the isosorbide crystals in the melt isosorbide suspension are purified from residual melt by washing with a washing isosorbide melt, the amount by weight of impurities in the washing isosorbide melt being less than the amount by weight of impurities in the residual melt.

    POLYARYLENE ETHER SULFONE
    6.
    发明申请

    公开(公告)号:WO2020053077A1

    公开(公告)日:2020-03-19

    申请号:PCT/EP2019/073783

    申请日:2019-09-06

    Applicant: BASF SE

    Abstract: A polyarylene ether sulfone comprising in polymerized form A) isosorbide, isomannide, isoidide or a mixture thereof and B) at least one at least one nonsulfonated dihalodiaryl sulfone (compound B) and C) at least one sulfonated dihalodiaryl sulfone (compound C), a process for its preparation and its use in the preparation of coatings, films, fibers, foams, membranes or molded articles.

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