Compositions and methods for imparting improved rheology on...

Details Compositions and methods for imparting improved rheology on... Compositions and methods for imparting improved rheology on...

C - Chemistry, Metallurgy

09

B

C09B 69/02 (2006.01) C09B 67/08 (2006.01) C09B 67/22 (2006.01) C09D 11/02 (2006.01)

Patent

CA 2483836

Pigment compositions comprising an organic pigment and a combination of at least two normally water-soluble coloured compounds (dyes) of opposing charge, i.e. of at least one anionic and one cationic dye are provided. The compositions impart improved rheology on non-aqueous pigment based printing inks and paints.

Cette invention porte sur des compositions de pigments contenant un pigment organique et une combinaison d'au moins deux composés colorés (colorants) normalement hydrosolubles de charge contraire, autrement dit d'au moins un colorant anionique et d'au moins un colorant cationique. Ces compositions permettent d'améliorer les propriétés rhéologiques d'encres d'impression et de peintures à base de pigment non aqueuses.

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