102306 ⎘
Azo dyes containing onium groups containing cyclammonium groups attached to an azo group by a carbon atom of the ring system characterised by the coupling component being a heterocyclic compound derived from pyrazoles, pyrazolones
Particular Dissymmetrical Cationic Polyazo Compounds, Compositions Comprising Them as Direct Dye, Process For Dyeing Keratin Fibres and Device Therefor
Symmetrical Cationic Tetraazo Compounds, for Dyeing Keratin Fibres