Patent ID: 7081160

Claim:
An azobarbituric acid metal complex pigment comprising an azobarbituric acid metal complex of the formula (1), melamine in an amount of 1.0 to 1.95 mol per mol of the azobarbituric acid metal complex and a compound of the formula (2) in an amount of 0.05 to 1.0 mol per mol of the azobarbituric acid metal complex, wherein Metal represents Fe, Ni, Cu, Cs, Cd, Co, Al, Cr, Sn, Pb or Mn, wherein X represents a carbon atom or a nitrogen atom, R 1 represents a hydrogen atom, a substituted or non-substituted phenyl group or a nitrogen-containing heterocyclic residue, R 2 represents an alkyl group having 1 to 6 carbon atoms, an amino group, a hydroxyl group, a chlorine atom, a bromine atom, —NR 5 R 6 or —NH—R 4 —NR 5 R 6 , R 3 represents —NR 5 R 6 or —NH—R 4 —NR 5 R 6 , R 4 represents an alkylene group having 1 to 6 carbon atoms, and each of R 5 and R 6 represents an alkyl group having 1 to 6 carbon atoms or an alkenyl group.