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    Color-stable superabsorber
    10.
    发明授权
    Color-stable superabsorber 有权
    色稳超吸收器

    公开(公告)号：US08815770B2

    公开(公告)日：2014-08-26

    申请号：US13395051

    申请日：2010-09-14

    申请人： Mark Elliott ,  Thomas Daniel ,  Norbert Herfert

    发明人： Mark Elliott ,  Thomas Daniel ,  Norbert Herfert

    IPC分类号： B01J20/26 ,  C08K5/098 ,  C08K5/00

    CPC分类号： C08K5/098 ,  A61L2400/10 ,  C08K5/0025 ,  C08K5/005 ,  C08L33/02

    摘要： A superabsorbent produced by polymerizing a monomer mixture which comprises at least one ethylenically unsaturated monomer bearing at least one acid group, at least 0.1% by weight and at most 20% by weight, based on the total amount of ethylenically unsaturated monomers bearing at least one acid group (calculated as the free acid), of at least one alkaline earth metal salt (calculated without water of crystallization) selected from the salts of calcium, strontium or barium having been added before or during the polymerization and/or, if the polymerization is followed by a separate drying step, to the polymer before the drying, exhibits improved stability to discoloration in the course of storage under elevated temperatures and/or elevated air humidity.

    摘要翻译： 通过聚合单体混合物而制备的超吸收剂，其包含至少一种具有至少一个酸基团的烯键式不饱和单体，至少0.1重量％至多20重量％，基于具有至少一个 酸性基团（以游离酸计算）至少一种选自在聚合之前或聚合过程中加入的钙，锶或钡盐的碱土金属盐（不结晶水计算）和/或如果聚合 然后在干燥之前对聚合物进行单独的干燥步骤，在高温和/或高空气湿度下储存过程中显示改善的变色稳定性。