| abstract |
[PROBLEMS] To provide a pigment dispersant which is substantially colorless urea compound, substantially colorless, realizes stable and good pigment dispersibility and fluidity, and has excellent light transmittance. . SOLUTION: Urea compound represented by the following general formula (1), pigment dispersant containing the compound [R 1 : heterocyclic group, group represented by general formula (2); R 2 : H, a group represented by the general formula (2); R 3 : alkyl group, aryl group, H; Ar: phenylene group; X 1 , X 2 : single bond, oxygen, —NH—, —N <, sulfur, Amide group, ester group, urea group, urethane group; X 4 : —NH—, —O -: A: alkylene group, arylene group; m = 1-2; n 1 = 0~3; X 3: a single bond, oxygen, -NH -, - N <, sulfur, an amino group, an amide group, an ester group, a urea group, a urethane group; R 5: H, halogen atom, nitro group, Amino group, hydroxyl group, carboxyl group, cyano group, alkyl group, aryl group, heterocyclic group; n 2 = 1 to 30]. [Chemical 1] |