| abstract |
Cationic disazo compounds of the formula <IMAGE> wherein K independently of one another are each a coupling component, R independently of one another are each an unsubstituted or substituted C1-C4-alkyl group, R1 independently of one another are each hydrogen, unsubstituted or substituted C1-C4-alkyl, unsubstituted or substituted C1-C4-alkoxy, or halogen, and An is an anion are useful as dyes, in particular as paper dyes, whereby dyeings fast to water are obtained. The dyeings obtained have very good fastness to light and to wet processing. Disazo compounds of the formula <IMAGE> wherein K and R, are as defined above are useful as disperse dyes and as intermediates in the preparation of the above cationic disazo compounds. |