Process for Producing Water-Absorbing Polymer Particles with Low Caking Tendency and High Absorption under Pressure
    32.
    发明申请
    Process for Producing Water-Absorbing Polymer Particles with Low Caking Tendency and High Absorption under Pressure 有权
    生产具有低结块倾向和高压吸收的吸水聚合物颗粒的方法

    公开(公告)号:US20130187089A1

    公开(公告)日:2013-07-25

    申请号:US13792529

    申请日:2013-03-11

    Applicant: BASF SE

    CPC classification number: B01J20/321 C08F220/06 C08F222/1006 C08J3/24

    Abstract: A process for producing water-absorbing polymer particles with low caking tendency and high absorption under pressure, comprising polymerization of a monomer solution or suspension, drying of the resulting polymer gel, grinding, classifying, thermal surface postcrosslinking and coating with silicon dioxide, wherein the water-absorbing polymer particles have been coated, before, during or after the surface postcrosslinking with aluminum cations.

    Abstract translation: 一种生产具有低结块倾向和高压吸收的吸水聚合物颗粒的方法,包括单体溶液或悬浮液的聚合,所得聚合物凝胶的干燥,研磨,分级,热表面后交联和用二氧化硅涂覆,其中 吸水聚合物颗粒在与铝阳离子的后交联之前,期间或之后已被涂覆。

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