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. 22, 1992
Filed:
Jun. 14, 1991
Yoshiaki Ishino, Shizuoka, JP;
Mishima Paper Co., Ltd., Fuji, JP;
Abstract
An absorbent fibrous structure comprising salts of fibrous carboxymethyl cellulose. In this structure, polyelectrolyte complexes are formed in at least a part of the salts of fibrous carboxymethyl cellulose by cationic water-soluble polymers. Each cationic water-soluble polymer comprises repeating units having at least one of primary, secondary, tertiary and quaternary nitrogen atoms and does not substantially have functional groups for forming cross-linking other than the nitrogen atoms. According to a preferred embodiment, polyamine resin was added to a suspension of Na-salts of fibrous CMC to prepare a stock, and from this stock, an absorbent fibrous sheet is produced by a paper-making method. Then, this sheet had a high water absorbency and had high wet tensile strength even after absorbing water. Further, slime was not generated at all and the sheet-surface was neutral.