| abstract |
A tetrakisazo compound of the formulae: <IMAGE>nyl or naphthyl group, Q2 represents a phenyl which is substituted by at least one substituent selected from a hydroxy group and an amino group, and R1, R2, R3 and R4 each independently represents a hydrogen atom, a hydroxy group, a lower alkyl group, a lower alkoxy group or a substituted or unsubstituted amino group, or a salt thereof, and a polarizing film which comprises the tetrakisazo compound or a salt thereof and which may further comprise other organic dyes. |