Pigment compositions for oil-based lithographic printing ink...

Details Pigment compositions for oil-based lithographic printing ink... Pigment compositions for oil-based lithographic printing ink...

C - Chemistry, Metallurgy

09

B

C09B 67/08 (2006.01) C09B 67/22 (2006.01) C09D 11/02 (2006.01)

Patent

CA 2544803

Pigment compositions for oil-based lithographic printing ink systems are provided which comprise as colourant a mixture of an organic pigment and an organic dyestuff soluble in an organic solvent (solvent dye). The printing inks prepared from these pigment compositions show outstanding improvements in colour strength combined with improvements in both gloss and transparency of the prints obtained.

La présente invention a trait à des compositions pigmentaires pour des système d'encre d'impression lithographique à base d'huile comportant en tant que colorant un mélange d'un pigment organique et d'une matière colorante organique soluble dans un solvant organique (colorant solvant). Les encres d'impression préparées à partir de ces compositions pigmentaires présentent des améliorations exceptionnelles dans l'intensité de couleur combinée avec des améliorations réalisées en brillance ainsi qu'en transparence.

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