Cationic polymer

C - Chemistry – Metallurgy – 08 – B

Patent

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Details

C08B 11/145 (2006.01) A61L 15/28 (2006.01) A61L 15/60 (2006.01) C08B 11/14 (2006.01) C08B 15/00 (2006.01) C08B 15/10 (2006.01)

Patent

CA 2205026

The invention relates to a cationic polysaccharide, preferably in fibrous form, having superabsorbent characteristics, the polysaccharides being substituted by quaternary ammonium groups and having a ds of at least 0.5, preferably 0.5 to 2.5, and the polysaccharides being cross-linked to a sufficient extent that it remains insoluble in water. The polysaccharide is preferably cellulose. An increased number of functional groups in the product improves superabsorbent properties, whereas the use of a cross-linking agent makes it possible to control the gel strength of the product and makes it easier to tailor the characteristics of the product to those which are required.

L'invention porte sur un polysaccharide cationique, de préférence sous forme fibreuse, présentant des caractéristiques superabsorbantes, les polysaccharides étant substitués par des groupes ammonium quaternaires et présentant un ds (degré de substitution) d'au moins 0,5 et de préférence compris entre 0,5 et 2,5, et les polysaccharides étant suffisament réticulés pour rester insolubles dans l'eau. Le polysaccharide est de préférence de la cellulose. Le nombre accru des groupes fonctionnels du produit en améliore les proprités superabsorbantes, tandis que le recours à un agent de réticulation permet d'ajuster la résistance à l'état de gel du produit et d'en adapter plus facilement les caractéristiques à celles demandées.

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