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:
Dec. 14, 2010
Filed:
Dec. 20, 2006
Kenji Kadonaga, Kakogawa, JP;
Yorimichi Dairoku, Himeji, JP;
Shin-ichi Fujino, Himeji, JP;
Hiroko Okochi, Himeji, JP;
Yoshio Irie, Himeji, JP;
Hideyuki Tahara, Osaka, JP;
Kenji Kadonaga, Kakogawa, JP;
Yorimichi Dairoku, Himeji, JP;
Shin-ichi Fujino, Himeji, JP;
Hiroko Okochi, Himeji, JP;
Yoshio Irie, Himeji, JP;
Hideyuki Tahara, Osaka, JP;
Nippon Shokubai Co., Ltd., Osaka, JP;
Abstract
A method for surface crosslinking water-absorbing resin of the present invention includes a step (1) of obtaining a wet mixture, a step (2) of obtaining a dried particulate composition, and a step (3) of carrying out a surface crosslinking reaction. With this, since a processing time of each step becomes short, it is possible to mass produce the water-absorbing resin having excellent physical properties. Moreover, a method for manufacturing the water-absorbing resin of the present invention includes a modifying step and a cooling step. The modifying step and/or the cooling step are/is carried out by using stirring means including a rotation axis having a plurality of stirring boards, and the stirring means includes the stirring board having a specific thickness and/or a scraping blade having a specific shape. With this, it is possible to suppress the generation of the fine powder in the modifying step and/or the cooling step.