AZO COMPOUND AND DYE POLARIZING FILM CONTAINING THE SAME

摘要

Disclosed is an azo compound represented by the formula (1) or (2) below, or a salt thereof.
(In the formulae, A represents a substituted phenol group or a naphthyl group having 1-3 sulfonic acid groups; X represents -N=N- or -NHCO-; R 1 -R 4 independently represent a hydrogen atom, a lower alkyl-group or a lower alkoxyl group; m represents a number of 1-3; and n represent 0 or 1.)