| abstract |
Process for the mass dyeing of synthetic polyamides in dark brown, dark purple and black shades, characterized in that the dye used is either a mixture of the 1: 2 chromium complex of a monoazo dye of the formula I: and the 1: 2 chromium complex of a monoazo dye of the formula II: or else use a mixed 1: 2 chromium complex of a monoazo dye of the formula I and the formula II, where R ', R 2 , R 3 , R 4 and R 5 have the meaning given in claim 1. |