Dye based aqueous pigment dispersions

Details Dye based aqueous pigment dispersions Dye based aqueous pigment dispersions

C - Chemistry, Metallurgy

09

D

C09D 11/00 (2006.01) C09B 67/20 (2006.01) C09B 67/22 (2006.01)

Patent

CA 2320061

Aqueous based pigment dispersions wherein the pigment is dispersed in a dye in the absence of any other dispersant or additive. Aqueous based printing ink compositions containing these pigment dispersions. Methods for preparing aqueous based pigment dispersions, wherein the pigment is dispersed in a dye, and for preparing printing ink compositions incorporating these despersions.

L'invention concerne des dispersions de pigment à base aqueuse, ledit pigment étant dispersé dans un colorant en l'absence de tout autre agent de dispersion ou additif. L'invention concerne également des compositions d'encre d'imprimerie à base aqueuse contenant les dispersions de pigment susmentionnées. L'invention concerne enfin des procédés de préparation de ces dispersions de pigment à base aqueuse consistant notamment à disperser un pigment dans un colorant, ainsi que des procédés de préparation de compositions d'encre d'imprimerie incorporant ces dispersions.

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