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    • 10. 发明授权
    • Water-absorbent resin powder and its production process and use
    • 吸水树脂粉及其生产工艺及用途
    • US06562879B1
    • 2003-05-13
    • US09502823
    • 2000-02-11
    • Takumi HatsudaHiroyuki IkeuchiKoji MiyakeYoshio IrieKunihiko Ishizaki
    • Takumi HatsudaHiroyuki IkeuchiKoji MiyakeYoshio IrieKunihiko Ishizaki
    • C08J916
    • C08J3/12C08J3/122C08J2300/14
    • The present invention provides a water-absorbent resin powder and its production process and use, wherein the water-absorbent resin powder has high liquid permeability and high water absorbency. The production process for a water-absorbent resin powder, according to the present invention, comprises the step of obtaining water-absorbent crosslinked polymer particles by an aqueous solution polymerization step, and grinding the resultant crosslinked polymer particles until the bulk density thereof increases to not lower than 0.72 (g/ml). The water-absorbent resin powder is characterized by being arbitrarily pulverized and having a bulk density of not lower than 0.74 (g/ml) and a water absorption capacity of not lower than 20 (g/g) for 0.9 weight % physiological saline under a load of 0.7 psi (4.83 kPa). In addition, the absorbent structure comprises the above water-absorbent resin powder and a fibrous material. The absorbent article comprises an absorbent layer including the above absorbent structure.
    • 本发明提供吸水性树脂粉末及其制造方法和用途,其中吸水性树脂粉末具有高透液性和高吸水性。 根据本发明的吸水性树脂粉末的制造方法包括通过水溶液聚合步骤获得吸水性交联聚合物颗粒的步骤,并研磨所得交联聚合物颗粒,直到其堆积密度增加至不 低于0.72(g / ml)。 吸水性树脂粉末的特征在于任意粉碎,堆积密度不低于0.74(g / ml),对于0.9重量%生理盐水的吸水能力不低于20(g / g) 负载0.7 psi(4.83 kPa)。 此外,吸收性结构体包含上述吸水性树脂粉末和纤维材料。 吸收性物品包括包含上述吸收结构的吸收层。