| 摘要 |
The reoxidation of sulfur dyestuffs in an acid medium is associated with disadvantages, such as pollution of the environment, the risk of corrosion on equipment etc. Admittedly oxidation in an alkaline medium does not have these disadvantages, but it is, in turn, more difficult to control (dependence on pH and constancy of color shade). These difficulties are eliminated in accordance with the invention if the textile material containing cellulose fibers which has the sulfur dyestuffs in the reduced form applied and fixed thereto is subjected to the oxidative action of sodium benzenesulfochloroamide or p-toluenesulfochloroamide under alkaline conditions in order to develop the dyestuff. This can be carried out either continuously or discontinuously.
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