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:
Mar. 01, 2016
Filed:
Mar. 14, 2011
Applicants:
Syuji Kanzaki, Hyogo, JP;
Sumio Okuda, Hyogo, JP;
Kunihiko Ishizaki, Hyogo, JP;
Satoshi Matsumoto, Hyogo, JP;
Inventors:
Syuji Kanzaki, Hyogo, JP;
Sumio Okuda, Hyogo, JP;
Kunihiko Ishizaki, Hyogo, JP;
Satoshi Matsumoto, Hyogo, JP;
Assignee:
NIPPON SHOKUBAI CO., LTD., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J 3/12 (2006.01); A61L 15/56 (2006.01); A61L 15/60 (2006.01); C08F 6/00 (2006.01); B01J 20/26 (2006.01); C08J 3/24 (2006.01);
U.S. Cl.
CPC ...
A61L 15/56 (2013.01); A61L 15/60 (2013.01); B01J 20/261 (2013.01); B01J 20/267 (2013.01); C08F 6/008 (2013.01); C08J 3/12 (2013.01); C08J 3/122 (2013.01); C08J 3/245 (2013.01); B01J 2220/68 (2013.01); C08J 2300/14 (2013.01); C08J 2333/02 (2013.01);
Abstract
The disclosed process for producing a water-absorbing resin comprising: a polymerization step of polymerizing an aqueous unsaturated monomer; and a drying step of drying a particulated water-containing gel-liked crosslinked polymer, obtained in a finely crushing step during the polymerization or after the polymerization. In the process, the drying step is interrupted with a dryer kept in a heated state and thereafter the drying step is restarted.