发明名称 |
Aqueous-Liquid-Absorbing Agent and its Production Process |
摘要 |
An object of the present invention is to provide an aqueous-liquid-absorbing agent which comprises water-absorbent resin particles as essential components and is suitable for uses in sanitary materials. As a means of achieving this object, an aqueous-liquid-absorbing agent according to the present invention is an aqueous-liquid-absorbing agent comprising water-absorbent resin particles as essential components, wherein the water-absorbent resin 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 aqueous-liquid-absorbing agent exhibiting an absorption rate (FSR) of not less than 0.2 g/g/s, a water absorption capacity (CRC) of 5 to 25 g/g, a saline flow conductivity (SFC) of not less than 400x10<SUP>-7 </SUP>cm<SUP>3</SUP>.s/g, and a wet porosity of not less than 20%. A process according to the present invention for obtaining such an aqueous-liquid-absorbing 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.
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申请公布号 |
US2007207924(A1) |
申请公布日期 |
2007.09.06 |
申请号 |
US20050593706 |
申请日期 |
2005.03.11 |
申请人 |
IKEUCHI HIROYUKI;TORII KAZUSHI;SAKAMOTO SHIGERU;IWAMURA TAKU;MACHIDA SAYAKA |
发明人 |
IKEUCHI HIROYUKI;TORII KAZUSHI;SAKAMOTO SHIGERU;IWAMURA TAKU;MACHIDA SAYAKA |
分类号 |
B01J20/26;A61F13/15;A61F13/49;A61F13/53;B01J20/30 |
主分类号 |
B01J20/26 |
代理机构 |
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主权项 |
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地址 |
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