DICATIONIC 4-AZA-1-AZONIABICYCLO[2.2.2]OCTANES AND AGENTS FOR COLOURING KERATIN-CONTAINING FIBRES

摘要

The present application relates to dicationic azo dyes of the formula (I): with the definitions for R1, R2, R3, R4, R5, n, m, Y and X- as in claim 1, which are suitable for colouring keratin fibres, in particular human hair, and are in part themselves still not described in the prior art. In colourations, particularly brilliant and luminous red shades are obtained.