| abstract |
There has been found n 1) a method for reducing the toxicity of spent liquors from dyeing with cationic dyes or mixtures thereof, characterized by the step of dyeing with cationic dyes having a computed electrostatic shielding energy (idealized hydration energy) of ≧50 kcal/mol, n 2) cationic, generally low toxicity dyes, their preparation and use for dyeing. |