abstract |
New leuco sulfur dye compositions, characterized in that they are at current densities between 50 mA / cm 2 and 500 mA / cm 2 and a flow rate of 0.1 m / s to 2 m / s, preferably at 0.1 to 0, 4 m / s, their preparation and their use for dyeing cellulose-containing material. |