1.
    发明专利
    未知

    公开(公告)号:DE2614260A1

    公开(公告)日:1977-10-27

    申请号:DE2614260

    申请日:1976-04-02

    Applicant: HOECHST AG

    Abstract: An improved process for concentrating and dewatering of mineral suspensions by filtration which comprises adding to the suspension prior to the filtration as filter aid a composition containing a sulfosuccinate of the formula I wherein R1 and R2 each are an alkyl radical having about 6 to 12 carbon atoms and Me is an alkali metal, and an aliphatic amine having at least 5 carbon atoms.

    9.
    发明专利
    未知

    公开(公告)号:DE2646595A1

    公开(公告)日:1978-04-20

    申请号:DE2646595

    申请日:1976-10-15

    Applicant: HOECHST AG

    Abstract: Powdery molding compositions capable of being sintered made from polyvinyl chloride, which are especially suitable for the manufacture of separator plates for electric cells, and which substantially consist of a suspension polyvinyl chloride, from 0.003 to 0.45 weight %, relative to the molding composition, of free sulfonic acids selected from the group of alkylarylsulfonic acids and/or alkylsulfonic acids, and 1/9 to 7/3 of said 0.003 to 0.45 weight % of anions of said sulfonic acids, in the form of their salts with organic cations, selected from the group of quaternary ammonium cations.

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