Wet-strength finishing agents for paper

Details Wet-strength finishing agents for paper Wet-strength finishing agents for paper

D - Textiles, Paper

21

H

D21H 23/76 (2006.01) D21H 17/55 (2006.01) D21H 21/20 (2006.01) D21H 23/04 (2006.01) D21H 17/54 (2006.01) D21H 17/56 (2006.01)

Patent

CA 2447136

The invention relates to wet-strength finishing agents for paper, containing a) between 1 and 99.9 wt. % of a water-soluble polamidoamine which is cross- linked with an epihalohydrin, and b) between 0.1 and 20 wt. % of at least one other cationic polymer. The invention also relates to a method for producing paper having increased wet-strength, and to the use of said wet-strength finishing agents as additives to the paper stock during the production of paper.

L'invention concerne des apprêts pour papier conférant une résistance à l'humidité, ces apprêts contenant des mélanges comprenant a) de 1 à 99,9 % en poids d'une polyamidoamine soluble dans l'eau, réticulée avec une épihalohydrine et b) de 0,1 à 20 % en poids d'au moins un autre polymère cationique. L'invention concerne en outre un procédé pour produire du papier présentant une résistance accrue à l'humidité, ainsi que l'utilisation des apprêts susmentionnés comme additifs à la pâte à papier lors de la production de papier.

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