PIGMENT DISPERSION COMPOSITION, METHOD FOR PRODUCING THE SAME, COLORED POLYMERIZABLE COMPOSITION, COLOR FILTER, AND METHOD FOR PRODUCING THE COLOR FILTER, CAPABLE OF EXHIBITING HIGH PIGMENT DISPERSIBILITY

摘要

PURPOSE: A pigment dispersion composition is provided to form a colored film with improved stability and high contrast.;CONSTITUTION: A pigment dispersion composition is composed of: 100 parts diketopyrrolopyrrole-based pigment; 0.1-30 parts alkylated phthalimide diketopyrrolopyrrole; 0.1-20 parts alkylated phthalimide quinacridone; and one or more organic solvents. The average particle size of the diketopyrrolopyrrole-based pigment is 10nm~30nm. A method for preparing the diketopyrrolopyrrole-based pigment comprises the following steps of: mechanically mixing the diketopyrrolopyrrole-based pigment, water-soluble inorganic salt, and a water-soluble organic solvent which does not dissolve the water-soluble inorganic sa removing the water-soluble inorganic salt and water-soluble organic solvent; and drying the diketopyrrolopyrrole-based pigment.;COPYRIGHT KIPO 2010