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:
Oct. 04, 2005
Filed:
Oct. 15, 2002
Cross-linked polymer and process for producing the same, absorptive structure and absorptive article
Daisuke Tagawa, Kyoto, JP;
Tatsuya Asai, Kyoto, JP;
Yoshiyuki Iwasaki, Kyoto, JP;
Yoshihisa Ota, Kyoto, JP;
Keiji Tanaka, Kyoto, JP;
Daisuke Tagawa, Kyoto, JP;
Tatsuya Asai, Kyoto, JP;
Yoshiyuki Iwasaki, Kyoto, JP;
Yoshihisa Ota, Kyoto, JP;
Keiji Tanaka, Kyoto, JP;
Sanyo Chemical Industries, Ltd., Kyoto, JP;
Abstract
A crosslinked polymer (A) which comprises, as essential structural units, units derived from (a) one or more vinyl monomers selected from the group consisting of water-soluble vinyl monomers and/or vinyl monomers which become water-soluble upon hydrolysis and units derived from (b) a crosslinking agent and which satisfies the following requirements: (1): (X)≧25 g/g, (2): (Y)≧15 g/g, and (3): (Y)≧−0.54 (X)+41. It has exceedingly high water retentivity and exceedingly high absorbing power under load. When applied to an absorbent structure and an absorbent article, the polymer has excellent absorbing performance. In the relationships, (X) is the amount of physiological saline retained through 1-hour absorption and (Y) is the amount of physiological saline absorbed through 1-hour standing under a load of 60 g/cm.