Pigment dispersion composition

A composition dispersing a colorant in an organic solvent wherein the composition comprises a compound represented by formula (1), (2) or (3);

• ##STR24## wherein R.sub.1 represents a hydrogen atom, a straight or branched chain alkyl group which may have a substituent group having from 1 to 30 carbon atoms, and an alicyclic hydrocarbon group, an aromatic hydrocarbon group or heterocyclic group each of which may have a substituent group, and m represents an integer of 0 or more, R.sub.2 represents:
• ##STR25## R.sub.3 and R.sub.6 each represent the same as R.sub.1, and R.sub.4 and R.sub.6 each represent:
• ##STR26## R.sub.7, R.sub.8 and R.sub.9 each represent the same as R.sub.1 and n represents an integer of 0;
• ##STR27## R.sub.21, R.sub.22, R.sub.27, and R.sub.28 each represent a hydrogen atom, a straight or branched chain alkyl group which may have a substituent group having from 1 to 30 carbon atoms, and an alicyclic hydrocarbon, aromatic hydrocarbon group or heterocyclic group, each of which may have a substituent group, and R.sub.23, R.sub.24, R.sub.25 and R.sub.26 each represent the following structural formula, and R.sub.202, R.sub.203, R.sub.204, R.sub.205, and R.sub.206 each are the same as R.sub.21, and k represents an integer of 0 or more and I represents an integer of 1 or more, ##STR28## wherein A represents a straight or branched alkyl group having at least 3 hydroxyl groups, which may have a substituent group, an alicyclic hydrocarbon, aromatic hydrocarbon, heterocyclic group or a residual group of a heterocyclic group, each of which may have a substituent group, and R.sub.30 to R.sub.39 each represent a hydrogen atom, a straight or branched chain alkyl group which may have a substituent group having from 1 to 30 carbon atoms, and x, y and z each represent an integer of 1 or more and the total of them is 5 or more.