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:
Jan. 14, 2020
Filed:
Jul. 01, 2016
Applicant:
Nippon Shokubai Co., Ltd., Osaka-shi, Osaka, JP;
Inventors:
Assignee:
NIPPON SHOKUBAI CO., LTD., Osaka-shi, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J 20/26 (2006.01); B01J 20/28 (2006.01); C08J 3/12 (2006.01); C08J 3/24 (2006.01);
U.S. Cl.
CPC ...
B01J 20/261 (2013.01); B01J 20/267 (2013.01); B01J 20/28004 (2013.01); B01J 20/28011 (2013.01); B01J 20/28016 (2013.01); C08J 3/245 (2013.01); C08J 2333/02 (2013.01);
Abstract
A particulate water absorbing agent having a polyacrylic acid (salt)-based water-absorbing resin as a main component, being surface-crosslinked and satisfying physical properties (1) to (3) below: (1) a proportion of particles with a particle diameter of not less than 150 μm and less than 850 μm is not less than 90% by weight; (2) an elastic modulus index (EMI) of particles with a particle diameter of not less than 500 μm and less than 600 μm is not less than 5500; and (3) a recovery rate defined as Rec.CRC/CRC is 1.05 to 1.20, the particulate water absorbing agent being particularly useful for absorbent articles.