Patent ID: 6488867
Filing Date: 2002-12-03
Classification: B41M,C09D,D06L,D06N,D06P,D21H,G03C

Abstract:
A fluorescent white organic pigment composition in the form of an aqueous dispersion having an excellent hiding power, comprising a binder, an anionic active agent, and as an organic pigment component, a complex salt (compound) represented by the following General Formula: in which the two Xs are the same or different and each represents a hydrogen atom, a methyl group, an ethyl group, a methoxy group, an ethoxy group, a sulfo group or a chlorine atom, R1 represents an alkyl, alkenyl, aralkyl, aryl or cycloalkyl group, an R2, R3, and R4 independently represent a hydrogen atom or R1, two or three groups of R2, R3, and R4 being capable of forming a heterocyclic group with nitrogen atom in each case, and being in the form of an aqueous dispersion, wherein the binder is an acryl-styrene copolymer and the organic pigment component is present in an amount of about 20.5 wt %, or the binder is a latex and the organic pigment component is present in an amount of 25 wt %.