Pigment compositions and process of shading

Details Pigment compositions and process of shading Pigment compositions and process of shading

C - Chemistry, Metallurgy

09

B

C09B 67/22 (2006.01) C09B 67/40 (2006.01) D21H 21/28 (2006.01) D21H 27/10 (2006.01)

Patent

CA 2368139

Compositions comprising a) a mixture of i) C.I. Pigment Violet 19 together with either C.I. Pigment Blue 15 or C.I. Pigment Blue 60, or ii) C.I. Pigment Red 177 together with either C.I. Pigment Blue 15 or C.I. Pigment Blue 60, and b) a dispersant, c) optionally a biocide, and d) water. A process for shading of paper using said compositions or by applying separate pigment dispersions of a) C.I. Pigment Violet 19 and either C.I. Pigment Blue 15 or C.I. Pigment Blue 60, or b) C.I. Pigment Red 177 and either C.I. Pigment Blue 15 or C.I. Pigment Blue 60.

L'invention concerne des compositions. Ces dernières comprennent (a) un mélange de (i) pigment CI Violet 19 avec un pigment CI bleu 15 ou bleu 60 ou (ii) un pigment CI rouge 177 avec un pigment CI bleu 15 ou bleu 60 et (b) un agent dispersant, (c) éventuellement un biocide et (d) de l'eau. L'invention traite d'un procédé pour colorer le papier à l'aide desdites compositions ou en appliquant des dispersions de pigments séparées de (a) pigment CI violet 19 et pigment CI bleu 15 ou bleu 60 ou (b) pigment CI rouge 177 et pigment CI bleu 15 ou bleu 60.

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