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:
Aug. 28, 2012
Filed:
Mar. 03, 2008
Kazushi Torii, Himeji, JP;
Yoshifumi Adachi, Himeji, JP;
Taishi Kobayashi, Himeji, JP;
Yusuke Watanabe, Himeji, JP;
Hiroyuki Ikeuchi, Himeji, JP;
Toshimasa Kitayama, Himeji, JP;
Kazushi Torii, Himeji, JP;
Yoshifumi Adachi, Himeji, JP;
Taishi Kobayashi, Himeji, JP;
Yusuke Watanabe, Himeji, JP;
Hiroyuki Ikeuchi, Himeji, JP;
Toshimasa Kitayama, Himeji, JP;
Nippon Shokubai Co., Ltd., Osaka, JP;
Abstract
To provide a water absorbing agent which is excellent in balance between absorbency and liquid permeability against pressure and is excellent in flowability at the time of moisture absorption. The water absorbing agent comprises water absorbent resin particles and an organic surface additive, wherein: the organic surface additive having (i) a reactive group for a functional group of a surface of each water absorbent resin particle and (ii) a hydrophobic group exists on the surface of the water absorbent resin particle, and the hydrophobic group has a hydrocarbon group whose carbon number is 8 or more, and a ratio of an oxyalkylene group in a molecular mass of the organic surface additive is 0 or more and 25 mass % or less.