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. 03, 2013
Filed:
Mar. 28, 2008
Teruhisa Nagashima, Himeji, JP;
Masatoshi Nakamura, Himeji, JP;
Yusuke Watanabe, Himeji, JP;
Kozo Nogi, Kakogawa, JP;
Kunihiko Ishizaki, Suita, JP;
Teruhisa Nagashima, Himeji, JP;
Masatoshi Nakamura, Himeji, JP;
Yusuke Watanabe, Himeji, JP;
Kozo Nogi, Kakogawa, JP;
Kunihiko Ishizaki, Suita, JP;
Nippon Shokubai Co., Ltd., Osaka, JP;
Abstract
A method includes the steps of: adding an organic surface cross-linking agent to a water absorbent resin having a cross-linked structure; adding a liquid permeability improving agent to the water absorbent resin concurrently with or after the addition of the organic surface cross-linking agent; and then adding a lubrication improving agent to the water absorbent resin. This provides a particulate water absorbing agent and a method for producing it, the particulate water absorbing agent being suitable for pneumatic transportation, suffering no decrease in the effect of the liquid permeability improving agent, and excelling in properties such as fluidity and damage resistance after the pneumatic transportation.