Pigment composition

D - Textiles – Paper – 21 – H

Patent

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Details

D21H 19/44 (2006.01) C09C 1/02 (2006.01) C09C 1/36 (2006.01) C09C 1/42 (2006.01) C09C 3/10 (2006.01) D21H 19/42 (2006.01)

Patent

CA 2450706

The invention relates to an aqueous slurry or dispersion of pigment particles comprising as dispersant an amphiphilic polymer at least partly adsorbed to the pigment particles, wherein the slurry or dispersion exhibits a temperature dependent viscosity in such way that the viscosity increases at least with a factor of about 2 when the temperature is raised from about 20 up to about 100~C. The invention further relates to a the preparation of the slurry or dispersion, a coating colour composition, a process for its preparation, a process for preparing coated paper or board, and paper or board obtainable by the process.

Cette invention porte sur une suspension ou une dispersion aqueuse de particules de pigment comprenant comme agent dispersant un polymère amphiphile au moins partiellement adsorbé aux particules de pigment. Cette suspension ou dispersion aqueuse présente une viscosité dépendant de la température, la viscosité augmentant d'un facteur au moins égal à environ 2 lorsque la température augmente d'environ 20 à environ 100 ·C. Cette invention concerne également une préparation de suspension ou de dispersion, une composition de sauce de couchage, un procédé de préparation de cette composition, un procédé de préparation de papier ou de carton couché, ainsi qu'un papier ou un carton pouvant être obtenu par ce procédé.

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