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:
May. 07, 2019
Filed:
Mar. 29, 2016
Applicant:
Nippon Shokubai Co., Ltd., Osaka-shi, Osaka, JP;
Inventors:
Assignee:
NIPPON SHOKUBAI CO., LTD., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L 33/02 (2006.01); A41B 13/04 (2006.01); A61F 13/15 (2006.01); C08J 3/24 (2006.01); B01J 20/26 (2006.01); B01J 20/28 (2006.01); B01J 20/30 (2006.01); B01J 20/32 (2006.01);
U.S. Cl.
CPC ...
C08L 33/02 (2013.01); A41B 13/04 (2013.01); A61F 13/15 (2013.01); B01J 20/261 (2013.01); B01J 20/267 (2013.01); B01J 20/28004 (2013.01); B01J 20/28047 (2013.01); B01J 20/3014 (2013.01); B01J 20/3021 (2013.01); B01J 20/3217 (2013.01); B01J 20/3282 (2013.01); C08J 3/24 (2013.01); C08J 3/245 (2013.01); B01J 2220/68 (2013.01); C08J 2333/02 (2013.01);
Abstract
The present invention provides a particulate water-absorbing agent which has an excellent fluid retention capacity under pressure and an excellent liquid permeability. Each of the following values of the particulate water-absorbing agent of the present invention falls within a certain range: a ratio represented by 'centrifuge retention capacity/Ln (water-soluble component amount)'; a molecular weight distribution of the water-soluble component; a weight average molecular weight after a hydrolysis treatment; and a branching density after the hydrolysis treatment.