The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 18, 2020
Filed:
Mar. 28, 2017
Nippon Shokubai Co., Ltd., Osaka-shi, Osaka, JP;
Kazushi Torii, Himeji, JP;
Mariko Tamaki, Himeji, JP;
Daisuke Takagi, Himeji, JP;
Yuichiro Horimoto, Himeji, JP;
Taishi Kobayashi, Himeji, JP;
Taku Fujimoto, Himeji, JP;
Takahiro Kitano, Himeji, JP;
Taku Iwamura, Himeji, JP;
Hiroki Kawada, Himeji, JP;
Hiroyuki Goto, Himeji, JP;
Yasuhisa Nakajima, Himeji, JP;
Hiroyuki Ikeuchi, Himeji, JP;
NIPPON SHOKUBAI CO., LTD., Osaka-shi, Osaka, JP;
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).