Pigment mixture comprising kaolin and titania for use in...

C - Chemistry – Metallurgy – 09 – C

Patent

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C09C 1/42 (2006.01) D21H 17/63 (2006.01)

Patent

CA 2594824

A heated mixture comprising dehydroxylated kaolin and a high refractive index pigment is disclosed. When the dehydroxylated kaolin is metakaolin, the heated mixture has a GE brightness greater than 86% and a Hunter yellowness index of less than about 11. When the dehydroxylated kaolin is fully calcined kaolin, the heated mixture has a GE brightness greater than 89%. The heated mixture is advantageously used in decorative paper. Also disclosed are methods of using and making the decorative paper, and decorative laminates containing the decorative paper.

La présente invention a trait à un mélange réchauffé comportant du kaolin déshydroxylé et un pigment à indice de réfraction élevé. Lorsque le kaolin déshydroxylé est du métakaolin, le mélange réchauffé présente une luminosité GE supérieure à 86 % et un indice de jaunissement de Hunter inférieur à environ 11. Lorsque le kaolin déshydroxylé est du kaolin entièrement calciné, le mélange réchauffé présente une luminosité GE supérieure à 89 %. Le mélange réchauffé est avantageusement utilisé dans un papier décoratif. L'invention a également trait à des procédés d'utilisation et de fabrication de papier décoratif, et de stratifiés décoratifs contenant le papier décoratif.

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