PROCESS FOR PRODUCING HIGH-SWELLABILITY POLYMER COMPOSITES
    2.
    发明申请
    PROCESS FOR PRODUCING HIGH-SWELLABILITY POLYMER COMPOSITES 审中-公开
    生产高可膨胀聚合物复合材料的方法

    公开(公告)号:WO2014177488A1

    公开(公告)日:2014-11-06

    申请号:PCT/EP2014/058540

    申请日:2014-04-28

    申请人: BASF SE

    摘要: The present invention relates to a process for producing polymer composites suitable for absorbing and storing aqueous liquids and to the polymer composites obtainable by this process. The invention further relates to the use of these polymer composites. The process comprises free-radical polymerization of a monomer composition M which a) 50 to 100% by weight, based on the total amount of monomers A and B, of at least one monomer A having one ethylenic double bond and at least one neutralizable acid group, b) 0 to 50% by weight of optionally one or more comonomers B which are different than the monomers A and have one ethylenic double bond, and c) 0 to 10% by weight, based on the total amount of monomers A and B, of at least one crosslinker C, wherein the polymerization of the monomer composition is performed in an aqueous suspension of a water-insoluble particulate substance S comprising cellulose or lignocellulose, the weight ratio of the monomer composition M to the substance S being in the range from 9:1 to 1:9; and wherein the monomers A used for polymerization are present in the aqueous suspension in neutralized, i.e. anionic, form to an extent of at least 10 mol%, frequently to an extent of at least 20 mol%, particularly to an extent of at least 30 mol% and especially to an extent of at least 35 mol%.

    摘要翻译: 本发明涉及适用于吸收和储存含水液体的聚合物复合材料的方法以及通过该方法可获得的聚合物复合材料。 本发明还涉及这些聚合物复合材料的用途。 该方法包括单体组合物M的自由基聚合,a)50至100重量%,基于单体A和B的总量,至少一种具有一个烯属双键的单体A和至少一种可中和酸 基团,b)0至50重量%的任选一种或多种与单体A不同的共聚单体B,并具有一个烯属双键,以及c)基于单体A和/或单体A的总量为0至10重量% B的至少一种交联剂C,其中单体组合物的聚合在包含纤维素或木质纤维素的水不溶性颗粒物质S的水悬浮液中进行,单体组合物M与物质S的重量比在 范围从9:1到1:9; 并且其中用于聚合的单体A以中和的,即阴离子的形式存在于水悬浮液中,其程度至少为10摩尔%,通常至少为20摩尔%,特别是至少为30重量% mol%,特别是至少35mol%的程度。