D - Textiles – Paper – 21 – H
Patent
D - Textiles, Paper
21
H
D21H 23/76 (2006.01) D21H 17/24 (2006.01) D21H 17/29 (2006.01) D21H 17/31 (2006.01) D21H 17/67 (2006.01) D21H 17/68 (2006.01) D21H 17/70 (2006.01) D21H 27/00 (2006.01)
Patent
CA 2354647
The invention concerns a novel method for making paper based on cellulose fibre in sheet form, wherein a novel retention system comprising a suspension of precipitated silica and a cationic polymer is used for improving in particular the retention of the incorporated mineral fillers. The invention also concerns a method for making paper using a retention system which substantially improves draining. More precisely, the invention concerns the use of a precipitated silica and a cationic polymer comprising a cationic guar gum and/or a cationic starch.
L'invention concerne un nouveau procédé de fabrication de papier à base de fibre de cellulose sous forme de feuille, dans lequel un nouveau système de rétention comprenant une suspension de silice précipitée et un polymère cationique est utilisé pour améliorer notamment la rétention des charges minérales incorporées. La présente invention concerne aussi un procédé de fabrication du papier avec utilisation d'un système de rétention qui améliore sensiblement le drainage. Plus précisément, l'invention concerne l'utilisation d'une silice précipitée et d'un polymère cationique comprenant un galactomannane cationique et/ou un amidon cationique.
Hruschka Herbert
Lafon Marie-Odile
Rhodia Chimie
Robic
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