发明申请
- 专利标题： WATER ABSORBING AGENT, WATER ABSORBENT CORE USING THE AGENT, AND MANUFACTURING METHOD FOR WATER ABSORBING AGENT
- 专利标题（中）： 吸水剂，使用该水剂的吸水芯，以及吸水剂的制造方法
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申请号： US12294328申请日： 2007-03-20
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公开(公告)号： US20090298685A1公开(公告)日： 2009-12-03
- 发明人: Kazushi Torii , Hirofumi Shibata , Kazuki Kimura , Yasuhisa Nakashima , Motohiro Imura , Hiroko Ueda , Katsuyuki Wada
- 申请人： Kazushi Torii , Hirofumi Shibata , Kazuki Kimura , Yasuhisa Nakashima , Motohiro Imura , Hiroko Ueda , Katsuyuki Wada
- 申请人地址： JP Osaka-shi, Osaka
- 专利权人： NIPPON SHOKUBAI CO., LTD.
- 当前专利权人： NIPPON SHOKUBAI CO., LTD.
- 当前专利权人地址： JP Osaka-shi, Osaka
- 优先权： JP2006-085652 20060327; JP2006-188668 20060707; JP2006-355202 20061228
- 国际申请： PCT/JP2007/056527 WO 20070320
- 主分类号： B01J20/26
- IPC分类号： B01J20/26
摘要：
A water absorbing agent of the present invention has an internal crosslinking structure obtained by polymerization of a water-soluble unsaturated monomer. The agent satisfies conditions (a) to (d): (a) the agent contains water-insoluble inorganic particles at an amount of from 10 ppm to 1,900 ppm inclusive; (b) the agent contains 5 mass % or less particles which have such a size that they can pass through a sieve having a mesh opening size of 150 μm; (c) the agent has an absorbency against a pressure of 4.83 kPa (AAP) of 18 g/g or more; and (d) the water-insoluble inorganic particles reside on a surface of the water absorbing resin or near the surface.
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