| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing an aqueous pigment dispersion of C.I.pigment yellow 74 that can produce, in high production efficiency, an aqueous pigment dispersion having a pigment of an extremely fine particle size dispersed therein so that an ink composition for inkjet recording prepared by using the dispersion as a main component can give an image having excellent gloss and color development.SOLUTION: The method for producing an aqueous pigment dispersion for inkjet recording has a kneading step of kneading a mixture containing a pigment, a styrene/acrylic acid copolymer, a humectant and a basic compound to prepare a colored kneaded product which is solid at normal temperature and a mixing step of adding an aqueous medium to the colored kneaded product and stirring. The pigment is C.I.pigment yellow 74 and in the kneading step, 15 to 50 mass% of water based on the pigment is added.SELECTED DRAWING: Figure 1 |
