| abstract |
(57) [Problem] To provide a method for producing a powder pigment composition exhibiting excellent dispersibility when producing an aqueous dispersion such as an aqueous ink or paint. SOLUTION: A powder containing a pigment in a range of 45 to 75% by weight is obtained by removing water from a pigment paste containing water and a pigment using a kneader or a vibration drier. The pigment is selected from the group consisting of phthalocyanine, dioxazine violet, indanthrene blue, perylene, quinacridone, diketopyrrolopyrrole and azo. For pigment paste, If necessary, a polymer dispersant, a surfactant, a pigment derivative and the like are blended. |