| 摘要 |
PROBLEM TO BE SOLVED: To provide a pigment dispersion having low viscosity and excellent high-temperature storage stability, and to provide a colored composition for a color filter and a production method of the composition, from which a cured film with excellent adhesion property of a coating film to a substrate in development and excellent heat resistance can be formed.SOLUTION: [1] A pigment dispersion for a color filter is provided, which comprises a diketopyrrolopyrrole pigment, a pigment dispersant having a quaternary ammonium group and a polyalkylene glycol group, a glycol ether organic solvent, and an aromatic compound having two or more maleimide groups. [2] A colored composition for a color filter is provided, which comprises a diketopyrrolopyrrole pigment, a pigment dispersant having a quaternary ammonium group and a polyalkylene glycol group, a glycol ether organic solvent, a polyfunctional monomer, a photopolymerization initiator, and an aromatic compound having two or more maleimide groups. [3] A production method for the pigment dispersion described in [1], and [4] a production method of the colored composition described in [2] are also disclosed. |
