Superabsorbing polymers with rapid absorption properties and method for producing the same
    9.
    发明授权
    Superabsorbing polymers with rapid absorption properties and method for producing the same 有权
    具有快速吸收性能的超吸收聚合物及其制备方法

    公开(公告)号:US09555148B2

    公开(公告)日:2017-01-31

    申请号:US14352091

    申请日:2012-11-12

    摘要: This invention relates to a method for producing a water-absorbing polymer, including the following steps: (i) mixing (α1) 0.1 to 99.999 wt % polymerizable, ethylenically unsaturated, acid-group-containing monomers; (α2) 0 to 70 wt % polymerized ethylenically unsaturated, monomers copolymerizable with (α1); (α3) 0.00 1 to 10 wt %, cross-linking agent(s); (α4) 0 to 30 wt % water-soluble polymers; and (α5) 0 to 20 wt % additive(s), wherein the total quantity by weight of (α1) to (α5) amounts to 100 wt %, (ii) radical polymerization while cross-linking, in order to form a hydrogel polymer, (iii) drying the hydrogel polymer, (iv) grinding and sifting the water-absorbing polymer, (v) surface post-cross-linking the hydrogel polymer, and (vi) drying and processing the polymer, wherein, before the admixture of the initiator and the start of radical polymerization, 0.01 to 5 wt % of a surfactant, relative to acrylic acid, 0.01 to 5 wt % foaming agent, are added.

    摘要翻译: 本发明涉及一种吸水性聚合物的制造方法,包括以下步骤:(i)将(α1)0.1〜99.999重量%的可聚合的烯属不饱和的含酸基单体混合; (α2)0-70重量%聚合的烯属不饱和单体,可与(α1)共聚的单体; (α3)0.001-10重量%,交联剂; (α4)0〜30重量%水溶性聚合物; 和(α5)0〜20重量%的添加剂,其中(α1)〜(α5)的总量为100重量%,(ii)交联时的自由基聚合,以形成水凝胶 聚合物,(iii)干燥水凝胶聚合物,(iv)研磨和筛选吸水聚合物,(v)表面后交联水凝胶聚合物,和(vi)干燥和加工聚合物,其中在混合物 的引发剂和自由基聚合的开始,添加相对于丙烯酸的0.01〜5重量%的表面活性剂,0.01〜5重量%的发泡剂。