Patent ID: 6989055
Filing Date: 2006-01-24
Classification: C09B,C09D

Abstract:
1. A monoazo lake pigment composition containing a monoazo lake pigment obtained from a laked pigment aqueous slurry prepared by conducting coupling of a diazo component obtained by diazotizing an aromatic amine having a soluble group and a coupler component, and conducting laking after or simultaneously with the coupling, wherein the laking is carried out in the presence of a water-soluble acrylic polymer in an amount of 0.1 to 40 parts by weight per 100 parts by weight of the above coupler component, and the monoazo lake pigment is surface-treated by further adding 0.1 to 30 parts by weight of a water-soluble acrylic polymer to 100 parts by weight (solid content) of the laked pigment aqueous slurry.