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    VERZWEIGTE POLYESTER MIT SULFONATGRUPPEN
    56.
    发明公开
    VERZWEIGTE POLYESTER MIT SULFONATGRUPPEN 有权
    支化聚酯与磺酸

    公开(公告)号：EP2721090A1

    公开(公告)日：2014-04-23

    申请号：EP12728477.6

    申请日：2012-06-14

    Applicant: BASF SE

    Inventor： HABERECHT, Monika ,  DETERING, Jürgen ,  BRUCHMANN, Bernd ,  WITTELER, Helmut ,  WEBER, Heike ,  KOLTER, Karl

    IPC: C08G63/688 ,  C11D3/37

    CPC classification number: C11D3/3715 ,  C08G63/6888 ,  C08G63/918

    Abstract: The invention relates to branched polyesters with sulfonate groups. The polyesters can be obtained by reacting the components A, B, optionally C, and optionally D into branched polyesters, wherein the component A is selected from the group consisting of α,β-olefinically unsaturated dicarboxylic acids, the component B is selected from the group consisting of di- or higher-functional alcohols, the optional component C is selected from the group consisting of di- or higher-functional carboxylic acids and hydroxy carboxylic acids without α,β-olefinically unsaturated bonds, and the optional component D is selected from the compounds of formula CH
    3 (-O-CH
    2 -CH
    2 )
    n -OH, with the proviso that if only di-functional alcohols are selected as component B, the component C is present during the reaction and is selected from the group of the tri- or higher-functional carboxylic acids and the tri- or higher-functional hydroxy carboxylic acids without α,β-olefinically unsaturated bonds. The obtained branched polyesters are subsequently reacted with hydrogen sulfite, the molar quantity of hydrogen sulfite being at most 95 mol% with respect to the quantity of α,β-olefinically unsaturated dicarboxylic acids.

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