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    • 5. 发明申请
    • AN AQUEOUS-LIQUID-ABSORBING AGENT AND ITS PRODUCTION PROCESS
    • 一种水溶液吸收剂及其生产工艺
    • WO2005097313A1
    • 2005-10-20
    • PCT/JP2005/004858
    • 2005-03-11
    • NIPPON SHOKUBAI CO., LTD.IKEUCHI, HiroyukiTORII, KazushiSAKAMOTO, ShigeruIWAMURA, TakuMACHIDA, Sayaka
    • IKEUCHI, HiroyukiTORII, KazushiSAKAMOTO, ShigeruIWAMURA, TakuMACHIDA, Sayaka
    • B01J20/26
    • C08J3/245
    • An aqueous-liquid-absorbing agent according to this invention is the one comprising water-absorbent resin particles as essential components, wherein the particles are obtained by a process including the step of polymerizing a water-soluble ethylenically unsaturated monomer and have a crosslinked structure in their inside; with the agent exhibiting FSR of not less than 0.2 g/g/s, CRC of 5 to 25 g/g, SFC of not less than 400 x 10¿-7?m¿3?•s/g, and a wet porosity of not less than 20 %. A process according to this invention for obtaining such an agent is characterized by comprising the steps of: obtaining a hydrogel from an aqueous monomer solution including a water-soluble ethylenically unsaturated monomer and an internal-crosslinking agent of not less than 0.2 mol % in ratio to the monomer; and then extruding this hydrogel from a perforated structure having perforation diameters in the range of 0.3 to 6.4 mm to thereby pulverize the hydrogel.
    • 根据本发明的含水液体吸收剂是以吸水性树脂颗粒为必须成分的水性液体吸收剂,其中颗粒通过包括使水溶性烯属不饱和单体聚合并具有交联结构的方法获得, 他们的内部 表现出FSR为0.2g / g / s以上的试剂,5〜25g / g的CRC,不小于400×10 -7 cm 3 / s的SFC,湿孔隙率 不低于20%。 根据本发明的用于获得这种试剂的方法的特征在于包括以下步骤:从包含水溶性烯键式不饱和单体和不小于0.2mol%的内部交联剂的单体水溶液获得水凝胶 单体; 然后从穿孔直径在0.3至6.4mm范围内的穿孔结构体挤出该水凝胶,从而粉碎水凝胶。