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:
Apr. 14, 2015
Filed:
Jul. 15, 2009
Applicants:
Makoto Nagasawa, Nara, JP;
Hiroyuki Ikeuchi, Himeji, JP;
Inventors:
Makoto Nagasawa, Nara, JP;
Hiroyuki Ikeuchi, Himeji, JP;
Assignee:
Nippon Shokubai Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01J 20/26 (2006.01); B01J 20/02 (2006.01); B01J 20/22 (2006.01); C08F 20/06 (2006.01); B01J 20/28 (2006.01); A61F 13/53 (2006.01); C08K 5/17 (2006.01); C08K 3/32 (2006.01); C08L 33/02 (2006.01);
U.S. Cl.
CPC ...
B01J 20/28011 (2013.01); A61F 13/53 (2013.01); B01J 20/02 (2013.01); B01J 20/26 (2013.01); B01J 20/28004 (2013.01); B01J 2220/46 (2013.01); B01J 2220/68 (2013.01); C08K 3/32 (2013.01); C08K 5/175 (2013.01); C08L 33/02 (2013.01);
Abstract
The application relates to the particulate water absorbing agent of the present invention composed primarily of a polyacrylic acid- or polyacrylate-based water absorbing resin and containing a chelating agent and a phosphorous compound. Accordingly, the particulate water absorbing agent composed primarily of a water absorbing resin achieves both excellent water absorbing properties and anti-coloring effect which would normally be incompatible. A particulate water absorbing agent for absorbent core is provided that is suitable for actual use.