Patent ID: 8888267
Filing Date: 2014-11-18
Classification: C09B,C09D

Abstract:
1. A non-aqueous pigment dispersion comprising: a non-aqueous dispersion medium, a polymeric dispersant, a pigment, and a dispersion synergist; wherein the dispersion synergist is represented by Formula (I): wherein R the pigment is selected from the group consisting of an azo pigment containing a benzimidazolone group, an azo pigment containing a quinoxalinedione group, a diketopyrrolo-pyrrole pigment, an unsubstituted quinacridone, a dichloro substituted quinacridone, and mixed crystals thereof, with the proviso that the mixed crystal of the unsubstituted quinacridone and/or the dichloro substituted quinacridone does not contain dimethyl substituted quinacridone.