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:
Aug. 21, 2012
Filed:
Feb. 06, 2004
Kazushi Torii, Himeji, JP;
Yoshiro Mitsukami, Himeji, JP;
Motohiro Imura, Akashi, JP;
Taku Iwamura, Himeji, JP;
Toshimasa Kitayama, Himeji, JP;
Kenji Kadonaga, Kakogawa, JP;
Hiroki Inoue, Kyoto, JP;
Koji Miyake, Okayama, JP;
Kozo Nogi, Kakogawa, JP;
Masatoshi Nakamura, Himeji, JP;
Shigeru Sakamoto, Himeji, JP;
Sayaka Machida, Himeji, JP;
Kazushi Torii, Himeji, JP;
Yoshiro Mitsukami, Himeji, JP;
Motohiro Imura, Akashi, JP;
Taku Iwamura, Himeji, JP;
Toshimasa Kitayama, Himeji, JP;
Kenji Kadonaga, Kakogawa, JP;
Hiroki Inoue, Kyoto, JP;
Koji Miyake, Okayama, JP;
Kozo Nogi, Kakogawa, JP;
Masatoshi Nakamura, Himeji, JP;
Shigeru Sakamoto, Himeji, JP;
Sayaka Machida, Himeji, JP;
Nippon Shokubai Co., Ltd., Osaka, JP;
Abstract
There are disclosed a water-absorbent resin composition and its production process, wherein the water-absorbent resin composition causes little gel-blocking and is excellent in the liquid permeability and liquid diffusibility and is high also in the absorption performances and further is strong also against the physical damage; and there are further disclosed a water-absorbent resin composition and its production process, wherein the water-absorbent resin composition has the following further advantages, in addition to the above, of involving little segregation of the metal compound and further having a dust prevention effect. One of water-absorbent resin compositions according to the present invention is a water-absorbent resin composition comprising water-absorbent resin particles obtained by polymerizing a monomer including acrylic acid and/or its salt, with the composition having a mass-average particle diameter of 100 to 600 μm and comprising water-soluble polyvalent metal salt particles and the water-absorbent resin particles that have been surface-crosslinked.