D - Textiles – Paper – 21 – H
Patent
D - Textiles, Paper
21
H
D21H 17/70 (2006.01) D21C 9/00 (2006.01) D21H 17/67 (2006.01)
Patent
CA 2381356
The invention concerns a method for fixing a mineral filler on cellulosic fibres in an aqueous suspension. The invention is characterised in that it consists in using as reaction medium a cellulosic fibre aqueous suspension derived from papermaking, comprising at least hydrogenocarbonates, carbonates or silicates of alkaline and/or alkaline-earth metals and in adding to said reaction medium, a hydroxide of the mineral filler, to precipitate the carbonates or silicates of the mineral filler on the fibres. The invention is particularly useful for making paper.
L'invention concerne un procédé pour fixer une charge minérale sur des fibres cellulosiques en suspension aqueuse. Selon l'invention, ce procédé consiste à utiliser comme milieu réactionnel une suspension aqueuse de fibres cellulosiques issue d'une fabrication papetière, comprenant au moins des hydrogénocarbonates, carbonates ou silicates de métaux alcalins et/ou alcalino-terreux et à ajouter audit milieu réactionnel, un hydroxyde de la charge minérale, pour préci-piter des carbonates ou silicates de la charge minérale sur les fibres. L'invention trouve notamment application dans la fabrication du papier.
Joisson Didier
Richard Christian
Schohn Gilbert
Schu Cyrille
Georgia-Pacific France
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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