| 摘要 |
<p>1. Process for dyeing synthetic, hydrophobic fibre materials with organophilic dyestuffs, which are free from sulphonic acid groups, by the extraction method, in which the liquor, which circulates in a closed circuit, flows through a dyestuff depot from which the dyestuff is removed by a dissolution process and is then fed to the material to be dyed, characterized in that the depot is charged with non-finished, if necessary coarsely comminuted or spray-dried dyestuffs having a minimum solubility of 20 mg/l in water at 130 degrees C and an aqueous, emulsifier-free dyeing liquor is allowed to flow through the depot at the dyeing temperature.</p> |
