Pigment composition in the form of aqueous dispersion

Details Pigment composition in the form of aqueous dispersion Pigment composition in the form of aqueous dispersion

C - Chemistry, Metallurgy

09

D

C09D 5/02 (2006.01) C09D 7/12 (2006.01) C09D 105/00 (2006.01) C09D 133/26 (2006.01) C09D 139/00 (2006.01) C09D 179/02 (2006.01) D21H 19/40 (2006.01) B41J 2/01 (2006.01) B41M 5/00 (2006.01)

Patent

CA 2586205

The present invention relates to a pigment composition in the form of an aqueous dispersion comprising: (a) pigment particles of synthetic amorphous silica or aluminosilicate; (b) at least one water soluble aluminium salt; and, (c) at least one cationic polymer having a molecular weight from about 2000 t about 1000000 and a charge density from about 0.2 to about 12 meq/g. The invention further relates to a process for its production, use thereof, a process for coating paper or paper board and paper or paper board obtainable by the process.

L'invention concerne une composition de pigment sous forme de dispersion aqueuse qui comprend: (a) des particules de pigment en silice synthétique amorphe ou aluminosilicate; (b) au moins un sel d'aluminium hydrosoluble; et (c) au moins un polymère cationique de poids moléculaire compris entre environ 2 000 et environ 1 000 000 et de densité de charge comprise entre environ 0,2 et environ 12 meq/g. On décrit aussi un procédé pour la fabrication de cette composition, l'utilisation correspondante de la composition telle que décrite, et enfin un procédé de revêtement de papier ou de carton, et du papier ou du carton ainsi revêtu.

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