Invention Grant
- Patent Title: Particulate water absorbing agent
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Application No.: US16089260Application Date: 2017-03-28
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Publication No.: US10562006B2Publication Date: 2020-02-18
- Inventor: Kazushi Torii , Mariko Tamaki , Daisuke Takagi , Yuichiro Horimoto , Taishi Kobayashi , Taku Fujimoto , Takahiro Kitano , Taku Iwamura , Hiroki Kawada , Hiroyuki Goto , Yasuhisa Nakajima , Hiroyuki Ikeuchi
- Applicant: NIPPON SHOKUBAI CO., LTD.
- Applicant Address: JP Osaka-shi, Osaka
- Assignee: NIPPON SHOKUBAI CO., LTD.
- Current Assignee: NIPPON SHOKUBAI CO., LTD.
- Current Assignee Address: JP Osaka-shi, Osaka
- Agency: Dickinson Wright PLLC
- Priority: JP2016-063763 20160328; JP2016-194921 20160930; JP2016-194922 20160930
- International Application: PCT/JP2017/012752 WO 20170328
- International Announcement: WO2017/170605 WO 20171005
- Main IPC: B01J20/26
- IPC: B01J20/26 ; B01J20/28 ; B01J20/30

Abstract:
The purpose of the present invention is to provide a particulate water absorbing agent having both a high water absorption multiplying factor and a high water absorption rate and a method for manufacturing the same. The present invention is a particulate water absorbing agent for which CRC is 30 to 50 g/g, wherein the weight average particulate diameter (D50) is 200-600 μm, and the DRC index given by the following formula is a specific value (for example, 43, 30, or 20) or less: DRC index=(49−DRC5min [g/g])/(D50 [μm]/1000).
Public/Granted literature
- US20190111411A1 PARTICULATE WATER ABSORBING AGENT Public/Granted day:2019-04-18
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