Improved optical brightening compositions

Details Improved optical brightening compositions Improved optical brightening compositions

D - Textiles, Paper

21

H

D21H 17/66 (2006.01) D21H 21/16 (2006.01) D21H 21/30 (2006.01)

Patent

CA 2719543

A sizing composition for paper, characterised in that the sizing composition comprises (a) at least one optical brightener of formula (1), (b) a magnesium salt; and (c) a binding agent, which is selected from the group consisting of native starch, enzymatically modified starch and chemically modified starch; 0.1 to 15 parts of component (b) being present per part of component (a).

La présente invention concerne une composition de collage pour papier, caractérisée en ce que la composition de collage comprend (a) au moins un azurant optique de formule (1), (b) un sel de magnésium; et (c) un agent liant, qui est choisi dans le groupe constitué damidon natif, damidon enzymatiquement modifié et damidon chimiquement modifié; de 0,1 à 15 parties de composant (b) étant présentes par partie de composant (a).

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