PROCESS FOR PRODUCING SURFACE POSTCROSSLINKED WATER-ABSORBING POLYMER PARTICLES
    6.
    发明申请
    PROCESS FOR PRODUCING SURFACE POSTCROSSLINKED WATER-ABSORBING POLYMER PARTICLES 审中-公开
    生产表面后交联水吸收聚合物颗粒的方法

    公开(公告)号:US20130299739A1

    公开(公告)日:2013-11-14

    申请号:US13863738

    申请日:2013-04-16

    Applicant: BASF SE

    CPC classification number: B01J20/3287 C08J3/245 C08J2333/02

    Abstract: The invention relates to a process for producing surface postcrosslinked water-absorbing polymer particles, wherein the water-absorbing polymer particles are coated, before, during or after the surface postcrosslinking, with at least one basic salt of a trivalent metal cation and a monovalent carboxylic acid anion, wherein the basic salt is applied in the form of a solution that is stabilized by a vicinal diol and/or an amide of the formula R1—CO—NR2R3 where R1 is not H and in which R1 is not H2N— if both R2 and R3 are H. Further, the invention relates to solutions of at least one basic salt that are stabilized by a vicinal diol and/or an amide of the formula R1—CO—NR2R3 where R1 is not H and in which R1 is not H2N— if both R2 and R3 are H.

    Abstract translation: 本发明涉及一种生产表面后交联吸水性聚合物颗粒的方法,其中吸水性聚合物颗粒在表面后交联之前,期间或之后用三价金属阳离子和一价羧酸的至少一种碱式盐 酸性阴离子,其中所述碱性盐以由式R 1 -CO-NR 2 R 3的连位二醇和/或酰胺稳定的溶液的形式施用,其中R 1不是H并且其中R 1不是H 2 N-,如果两者都是 R2和R3为H.此外,本发明涉及至少一种碱性盐的溶液,其由式R 1 -CO-NR 2 R 3的连位二醇和/或酰胺稳定,其中R1不是H并且其中R1不是H H2N-如果R2和R3都是H.

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