Patent ID: 8232376

Claim:
An azo compound having the following formula (I): A(E)n (I) wherein A represents a residue of an azo compound, bonded with n pieces of E group through one or more heteroatom being N or O and forming a part of the residue A; E independently represents —C(═O)—O—R1 wherein R1 represents a substituted or an unsubstituted alkyl group having 4 to 10 carbon atoms, an alkenyl group, an alkynyl group, a cycloalkyl group, a cycloalkenyl group or an aralkyl group; and n represents an integer of from 1 to 10; and wherein A is the residue of a compound having the following formula (II): B—(N═N-Cp)m (II) B represents a main backbone of an azo compound and B has the following formulae (III): R 1 and R 2 independently represent a hydrogen atom, a halogen atom, a substituted or an unsubstituted alkyl group, a substituted or an unsubstituted alkoxy group, and a carboxyl group or an ester thereof; Cp represents a coupler component residue having the following formula (6): wherein X represents —OH, —N(R 1 )(R 2 ) or —NHSO 2 —R 3 wherein R 1 and R 2 independently represents a hydrogen atom or a substituted or an unsubstituted alkyl group, and R3 represents a substituted or an unsubstituted alkyl group or a substituted or an unsubstituted aryl group; Y 1 represents a hydrogen atom, a halogen atom, a substituted or an unsubstituted alkyl group, a substituted or an unsubstituted alkoxy group, a carboxy group, a sulfone group, a substituted or an unsubstituted sulfamoyl group or —CON(R 4 )(Y 2 ) wherein R 4 represents an alkyl group or its substituents, or a phenyl group or its substituents, and Z represents a ring hydrocarbon group or its substituents, or a heterocyclic group or its substituents; and m represents an integer of 2.