Absorbent material

B - Operations – Transporting – 01 – J

Patent

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Details

B01J 20/26 (2006.01) A61L 15/60 (2006.01) C08L 101/14 (2006.01)

Patent

CA 2207081

The present invention provides a superabsorbent material which comprises a combination of: (1) an anionic superabsorbent in which from 20 to 100 % of the functional groups are in free acid form, and (2) a cationic superabsorbent in which from 20 to 100 % of the functional groups in basic form, the cationic superabsorbent being based on a polysaccharide or a polymer of units of a monomer of formula (I) wherein R1 and R2 which may be the same or different, are each organic radicals which do not adversely affect the properties of the polymer and X is a suitable anion. The combination is particularly effective as a superabsorbent in the case of electrolyte containing solutions such as menses and urine.

L'invention concerne une matière superabsorbante comprenant une combinaison de (1) un superabsorbant anionique dans lequel 20 à 100 % des groupes fonctionnels se trouvent sous forme d'acide libre, et (2) un superabsorbant cationique dans lequel 20 à 100 % des groupes fonctionnels sont sous forme basique, le superabsorbant cationique se composant d'un polysaccharide ou d'un polymère d'unités d'un monomère de la formule (I), dans laquelle R?1¿ et R?2¿ peuvent être identiques ou différents, représentent chacun des radicaux organiques n'affectant pas négativement les propriétés du polymère, et X représente un anion approprié. La combinaison est particulièrement efficace en tant que superabsorbant dans le cas de solutions contenant un électrolyte telles que des menstrues et de l'urine.

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