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    • 4. 发明申请
    • WATER-ABSORBENT CROSS-LINKED POLYMERS IN FOAM FORM
    • 吸水,膨胀,交联聚合物
    • WO1997031971A1
    • 1997-09-04
    • PCT/EP1997000962
    • 1997-02-27
    • BASF AKTIENGESELLSCHAFTHÄHNLE, Hans, JoachimWALTER, ManfredTROPSCH, JürgenKREMESKÖTTER, JensSCHORNICK, GunnarANSTOCK, Thomas
    • BASF AKTIENGESELLSCHAFT
    • C08J09/30
    • C05G3/04A61L15/425A61L15/60C08J9/30
    • The invention concerns water-absorbent cross-linked polymers in foam form which are obtained by: (I) foaming a polymerizable aqueous mixture which comprises: (a) monoethylenically unsaturated monomers which contain acid groups and are neutralized to at least 50 mol %; (b) optionally other monoethylenically unsaturated monomers; (c) cross-linking agents; (d) initiators; (e) between 0.1 and 20 wt % of at least one surfactant; (f) optionally at least one solubilizer; and (g) optionally thickening agents, foam stabilizers, polymerization regulators, fillers and/or cell nucleating agents; foaming occurring by dispersing fine bubbles of a gas which is inert with respect to radicals; and (II) polymerizing the foamed mixture, forming a foam-form hydrogel and optionally adjusting the water content of the foam-form polymer to between 1 and 60 wt %. The invention further concerns a process for preparing these polymers and their use in sanitary articles which are used to absorb body fluids, and in bandaging material for covering wounds.
    • 水吸收,膨胀,交联的聚合物,其是由(I)发泡包含(a)酸官能单烯属不饱和单体的可聚合的含水混合物而获得,该摩尔被中和至至少50%,(b)任选地其它单烯属不饱和单体, 为0.1〜20重量%的至少一种表面活性剂的%,(f)任选地,任选地,(C)交联剂,(d)中的引发剂,(e)至少一种增溶剂和(g)增稠剂,泡沫稳定剂,聚合调节剂,填料和/或细胞的成核剂 其中,所述发泡通过分散这是朝向自由基呈惰性的气体的微小气泡发生; 和(II)的发泡混合物聚合以形成水凝胶泡沫,并且如果适当调节所述膨胀聚合物的水含量以1〜60重量%,它们的制备方法和它们在用于吸收体液的卫生制品中的用途和在敷料材料处理 用于覆盖伤口。