| abstract |
Described are mixtures of fiber-reactive azo dyes that can be dyed black, such as by printing cellulose and fibrous materials containing hydroxyl and / or carboxamide, such as cellulose fiber materials, wool and synthetic polyamide fibers. The dye mixture may comprise one or more disazo dyes of the general formula (1), one or more monoazo dyes of the general formula (3), one of the general formulas (4) and / or ( 4a) comprising one or more monoazo dyes, optionally one or more monoazo dyes (2) and optionally one or more monoazo dyes of the general formula (3a). |