A process for the production of paper

Details A process for the production of paper A process for the production of paper

D - Textiles, Paper

21

H

D21H 21/10 (2006.01) D21H 17/29 (2006.01) D21H 17/74 (1995.01)

Patent

CA 2108027

A process for improved dewatering and retention in the production of paper, where an anionic retention agent based on starches, cellulose derivatives or guar gums having no cationic groups and an acidic solution of an aluminium compound are added to the stock containing lignocellulose-containing fibres and optionally fillers. The pH of the stock prior to the addition of the aluminium compound should be at least about 6 to obtain the desired cationic aluminium hydroxide complexes in the stock. The present process is cost effective and insensitive to the content of calcium in the white water.

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