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:
Jul. 20, 2004
Filed:
Sep. 19, 2001
Jeffrey Wilson Thornton, Huizen, NL;
Bas Schraven, Nijmegen, NL;
Harm Jan Thiewes, Woudenberg, NL;
Dorine Lisa Van Brussel-Verreast, Bodegraven, NL;
Luca Bemporad, Gothenburg, SE;
Anne-Mieke Yvonne Wilhelmina Verwiiligen, Zeist, NL;
Arie Cornelis Besemer, Amerongen, NL;
Pia Kalentuin, Torslanda, SE;
SCA Hygiene Products Zeist B.V., Zeist, NL;
Abstract
A process is disclosed for producing an acidic superabsorbent polysaccharide derivative, comprising the steps of: (a) crosslinking at least one polysaccharide containing acidic groups, such as carboxymethyl cellulose and/or 6-carboxy starch, with a crosslinking agent to produce a gel; (b) if necessary, adjusting the pH of the polysaccharide to a value between 3.5 and 5.5; (c) comminuting the acidified polysaccharide gel; and (d) drying the comminuted polysaccharide at elevated temperature. The superabsorbent polysaccharide obtainable by this process has a pH below 5 and provides odour control when contacted with malodorous fluids.