发明授权
- 专利标题: Water-absorbent resin composition and its production process
- 专利标题(中): 吸水树脂组合物及其制备方法
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申请号: US10544348申请日: 2004-02-06
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公开(公告)号: US08247491B2公开(公告)日: 2012-08-21
- 发明人: Kazushi Torii , Yoshiro Mitsukami , Motohiro Imura , Taku Iwamura , Toshimasa Kitayama , Kenji Kadonaga , Hiroki Inoue , Koji Miyake , Kozo Nogi , Masatoshi Nakamura , Shigeru Sakamoto , Sayaka Machida
- 申请人: Kazushi Torii , Yoshiro Mitsukami , Motohiro Imura , Taku Iwamura , Toshimasa Kitayama , Kenji Kadonaga , Hiroki Inoue , Koji Miyake , Kozo Nogi , Masatoshi Nakamura , Shigeru Sakamoto , Sayaka Machida
- 申请人地址: JP 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
- 代理机构: Roylance, Abrams, Berdo & Goodman, L.L.P.
- 优先权: JP2003-032698 20030210; JP2003-063548 20030310; JP2003-310386 20030902; JP2003-322031 20030912
- 国际申请: PCT/JP2004/001294 WO 20040206
- 国际公布: WO2004/069293 WO 20040819
- 主分类号: C08L33/02
- IPC分类号: C08L33/02 ; C08L31/00 ; C08L29/04 ; C08F20/06 ; C08K3/22
摘要:
There are disclosed a water-absorbent resin composition and its production process, wherein the water-absorbent resin composition causes little gel-blocking and is excellent in the liquid permeability and liquid diffusibility and is high also in the absorption performances and further is strong also against the physical damage; and there are further disclosed a water-absorbent resin composition and its production process, wherein the water-absorbent resin composition has the following further advantages, in addition to the above, of involving little segregation of the metal compound and further having a dust prevention effect. One of water-absorbent resin compositions according to the present invention is a water-absorbent resin composition comprising water-absorbent resin particles obtained by polymerizing a monomer including acrylic acid and/or its salt, with the composition having a mass-average particle diameter of 100 to 600 μm and comprising water-soluble polyvalent metal salt particles and the water-absorbent resin particles that have been surface-crosslinked.
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