Patent ID: 6482257
Filing Date: 2002-11-19
Classification: C09B

Abstract:
A solid solution of monoazo pigments comprising a host lattice and at least one guest material, wherein the host lattice is pigment red 57:1 or pigment yellow 111 and the guest material in host pigment red 57:1 has the general formula III wherein W=SO3H, NO2, or CO2H; X=Cl, CH3, SO3H, CO2H or H; Y=CF3 or H; and Z=Cl, CH3 or H, and the guest material in host pigment yellow 111 has the general formula IV wherein W=SO3H, NO2, OCH3 or CO2H; X=Cl, CH3, SO3H, CO2H or H; Y=CF3 or H; and Z=Cl, CH3 or H.