Mono-azo compound, mono-azo dye and dyeing process for polyester fibers

摘要

Mono-azo compounds and mono-azo dyes represented by the following general formula and a dyeing process for polyester fibers using the mono-azo dyes: wherein R1 and R2 individually represent hydrogen atom, substituted or non-substituted alkyl group, alkenyl group and cyclohexyl group, R3 represents hydrogen atom, chlorine atom, bromine atom, alkyl group, substituted or non-substituted alkoxy group or alkenyl group and R4 represents hydrogen atom, chlorine atom, bromine atom, alkyl group, alkoxy group, hydroxy group, acylamino group, alkoxycarbonylamino group, aralkyloxycarbonylamino group or alkylaminocarbonylamino group.