A process for the manufacture of paper

Details A process for the manufacture of paper A process for the manufacture of paper

D - Textiles, Paper

21

H

D21H 21/10 (2006.01) D21H 17/24 (2006.01) D21H 17/37 (2006.01) D21H 17/42 (2006.01) D21H 17/64 (2006.01) D21H 17/74 (1995.01)

Patent

CA 2108028

A process for improved dewatering and retention in the manufacture of paper, where a retention agent containing anionic groups and being based on a polysaccharide or being an acrylamide-based polymer and an alkaline solution of an aluminate are added to the stock containing lignocellulose-containing fibres and optionally fillers. The pH of the stock prior to the addition of the aluminate should be below about 7 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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