D - Textiles – Paper – 21 – H
Patent
D - Textiles, Paper
21
H
D21H 19/40 (2006.01)
Patent
CA 2676855
A method for the preparation of a silica slurry in water is described. The proposed silica slurry can be advantageously used as a constituent of a coating formulation for a paper comprising precipitated silica and/or silica gel as well as at least one further fine particulate pigment, in particular for an offset paper. The method includes, in the given sequence, the steps a) making a dispersion of the at least one further fine particulate pigment in water, b) adding the silica in dry powdery form to that dispersion.
L'invention porte sur une méthode de préparation d'une boue de silice dans l'eau. La boue de silice proposée peut être utilisée comme constituant d'un enduit pour papier comprenant la silice précipitée et-ou un gel de silice ainsi qu'au moins un autre pigment de particule fines, en particulier pour un papier offset. La méthode consiste: a) à préparer une dispersion d'au moins un autre pigment de particule fines; et b) à ajouter de la poudre sèche de silice à la dispersion.
Laber Axel
Resch Peter
Spyra Detlef
Stephan Roland
Van Avermaete Mikel
Cassan Maclean
Sappi Netherlands Services B.v.
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