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. 16, 2002
Filed:
Mar. 23, 1999
Applicant:
Inventors:
Kazuhisa Hitomi, Himeji, JP;
Yuji Yamamoto, Himeji, JP;
Shigenori Kirimura, Himeji, JP;
Nobuyuki Harada, Suita, JP;
Assignee:
Nippon Shokubai Co., Ltd, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ; C08F 8/00 ; C08G 6/348 ; C08G 6/391 ;
U.S. Cl.
CPC ...
C08F / ; C08F / ; C08F 8/00 ; C08G 6/348 ; C08G 6/391 ;
Abstract
The present invention has an object to provide a process for producing a water-absorbing agent which is excellent in the absorption capacities under no load and under a load with good balance and can display excellent absorption properties even if the weight percentage of a water-absorbent resin (resin concentration) is high when the water-absorbent resin is used for materials such as sanitary materials. The above object can be achieved by adding a vinyl compound or both the vinyl compound and a polyhydric alcohol to a water-absorbent resin and heating the resultant mixture.