Additives to chlorine dioxide bleaching

Details Additives to chlorine dioxide bleaching Additives to chlorine dioxide bleaching

D - Textiles, Paper

21

C

D21C 9/14 (2006.01) D21C 9/10 (2006.01)

Patent

CA 2321683

A method has been developed which enhances the effectiveness of chlorine dioxide bleaching of lignocellulosic materials, It effected by adding to the chlorine dioxide bleaching stage an aldehyde compound at a concentration of from about 0.01 3'o to about 20 by weight of the oven-dried lignocellulosic material.

L'invention concerne un procédé qui permet d'améliorer l'efficacité du blanchiment au dioxyde de chlore de matériaux lignocellulosiques. Pour ce faire, on ajoute un composé d'aldéhyde à l'étape de blanchiment au dioxyde de chlore, à une concentration d'environ 0,01 % à 20 % en poids du matériau lignocellulosique étuvé.

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