Method for controlling pitch and stickies deposition

Details Method for controlling pitch and stickies deposition Method for controlling pitch and stickies deposition

D - Textiles, Paper

21

H

D21H 21/02 (2006.01) D21C 9/08 (2006.01) D21H 17/26 (2006.01)

Patent

CA 2519718

A method for controlling Pitch and Stickies is disclosed. The method comprises adding hydrophobically modified hydroxyethyl cellulose (HMHEC) and cationic polymers to a cellulosic fiber slurry (pulp) or to a paper process or to a paper making system and results in a higher degree of inhibiting organic deposition and retention of pitch on paper fiber as compared to the inhibition of the individual ingredients. The combination of HMHEC and cationic polymers surprising results in a synergistic effect.

L'invention concerne un procédé d'élimination de la poix et de matières collantes. Le procédé consiste à ajouter de l'hydroxyéthylcellulose modifiée hydrophobiquement (HMHEC) et des polymères cationiques à une suspension (pâte) de fibre de cellulose ou à un système de traitement ou de fabrication de papier, et il permet d'obtenir un degré supérieur d'inhibition de dépôt organique et de rétention de poix sur de la fibre de papier, comparé à l'inhibition des ingrédients individuels. L'association de HMHEC et de polymères cationiques a un résultat surprenant se traduisant par un effet synergique.

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