Azo compound and a polarizing film containing the same

摘要

An azo compound of the following formulae (I) or (II): <IMAGE> (I) <IMAGE> (II) wherein Q1 represents a phenyl group or a naphthyl group, Q2 represents a phenyl group; R represents hydroxy group; R1 and R2 each independently represent a hydrogen atom, a hydroxy group, a C1-C4 alkyl group, a C1-C4 alkoxy group or a halogen atom; R3 and R4 each independently represent a hydrogen atom, a hydroxy group, a C1-C4 alkyl group, a C1-C4 alkoxy group or a substituted amino group; and X represents -NH-, -NHCO- or -N=N-; or a salt thereof; and a polarizing film containing the same.