Invention Grant
- Patent Title: Water-absorbent resin composition and its production process
- Patent Title (中): 吸水树脂组合物及其制备方法
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Application No.: US10544348Application Date: 2004-02-06
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Publication No.: US08247491B2Publication Date: 2012-08-21
- Inventor: Kazushi Torii , Yoshiro Mitsukami , Motohiro Imura , Taku Iwamura , Toshimasa Kitayama , Kenji Kadonaga , Hiroki Inoue , Koji Miyake , Kozo Nogi , Masatoshi Nakamura , Shigeru Sakamoto , Sayaka Machida
- Applicant: Kazushi Torii , Yoshiro Mitsukami , Motohiro Imura , Taku Iwamura , Toshimasa Kitayama , Kenji Kadonaga , Hiroki Inoue , Koji Miyake , Kozo Nogi , Masatoshi Nakamura , Shigeru Sakamoto , Sayaka Machida
- Applicant Address: JP Osaka
- Assignee: Nippon Shokubai Co., Ltd.
- Current Assignee: Nippon Shokubai Co., Ltd.
- Current Assignee Address: JP Osaka
- Agency: Roylance, Abrams, Berdo & Goodman, L.L.P.
- Priority: JP2003-032698 20030210; JP2003-063548 20030310; JP2003-310386 20030902; JP2003-322031 20030912
- International Application: PCT/JP2004/001294 WO 20040206
- International Announcement: WO2004/069293 WO 20040819
- Main IPC: C08L33/02
- IPC: C08L33/02 ; C08L31/00 ; C08L29/04 ; C08F20/06 ; C08K3/22

Abstract:
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.
Public/Granted literature
- US20060073969A1 Vater-absorbent resin composition and its production process Public/Granted day:2006-04-06
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