Biopolymers as wet strength additives

Details Biopolymers as wet strength additives Biopolymers as wet strength additives

D - Textiles, Paper

21

H

D21H 17/24 (2006.01) D21H 17/28 (2006.01) D21H 17/44 (2006.01) D21H 21/20 (2006.01)

Patent

CA 2670091

The invention concerns the use of a combination of an anionic polysaccharide having a preferred carboxyl content of 0.2-0.4 per monosaccharide unit and an aldehyde content of less than 0.5 aldehyde group per anionic acid group, and a cationic polymer, as a wet strength additive for papermaking.

L'invention concerne l'utilisation d'une combinaison d'un polysaccharide anionique présentant une teneur préférée en carboxyle comprise entre 0,2 et 0,4 par unité de monosaccharide et une teneur en aldéhyde inférieure à 0,5 groupe aldéhyde par groupe acide anionique, et d'un polymère cationique. Cette combinaison est utilisée comme additif conférant une résistance à l'état humide pour la fabrication du papier.

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