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    • 6. 发明授权
    • Superabsorbent polymer containing clay, particulate, and method of making same
    • 含有粘土,颗粒的超吸收性聚合物及其制造方法
    • US08222477B2
    • 2012-07-17
    • US12254434
    • 2008-10-20
    • Michael M. AzadScott J. SmithMark JoyGeoffrey Wyatt BlakeMichael S. Jarman
    • Michael M. AzadScott J. SmithMark JoyGeoffrey Wyatt BlakeMichael S. Jarman
    • A61F13/15
    • A61L15/60A61F13/53A61L15/18A61L15/24A61L15/46C08J3/12C08J3/128C08J2300/14Y10T428/2982
    • A process for the preparation of superabsorbent polymer containing clay, the process including the steps of (I) polymerizing a polymerization mixture comprising: (a) one or more ethylenically unsaturated carboxyl-containing monomers, (b) one or more crosslinking agents, (c) optionally one or more comonomers copolymerizable with the carboxyl-containing monomer, (d) neutralizing agent to partially neutralize the polymer to from about 50% to about 99%, by weight, and (e) a polymerization medium, to form a crosslinked partially neutralized hydrogel, (II) admixing a clay with the crosslinked partially neutralized hydrogel to form partially neutralized superabsorbent polymer-clay hydrogel; (III) drying the crosslinked partially neutralized hydrogel at a temperature from about 190° C. to about 210° C. and for a time period of from about 15 minutes to about 120 minutes, and (IV) comminuting the dried partially neutralized superabsorbent polymer-clay hydrogel to particles.
    • 一种制备含有粘土的超吸收聚合物的方法,所述方法包括以下步骤:(I)聚合混合物,其包含:(a)一种或多种烯属不饱和羧酸单体,(b)一种或多种交联剂,(c )任选地一种或多种可与含羧基单体共聚的共聚单体,(d)中和剂以将聚合物部分中和至约50%至约99%(重量),和(e)聚合介质,以形成部分交联 中和的水凝胶,(II)将粘土与交联的部分中和的水凝胶混合以形成部分中和的超吸收聚合物 - 粘土水凝胶; (III)在约190℃至约210℃的温度下干燥交联的部分中和的水凝胶,并且持续约15分钟至约120分钟的时间段,和(IV)粉碎干燥的部分中和的超吸收聚合物 将水凝胶粘贴到颗粒上。