| 摘要 |
The discharge printing past contains the sodium or calcium salt of a sulfonated derivative of an N-alkylated benzylphenyl ammonium halide which acts as a sequestering and solubilizing agent for the indigo blue. It is used in conjunction with a reducing agent (or an oxidizing agent) and a bleaching agent or process resistant dye, depending on whether the print is to be white or colored. After developing in the presence of a second removing agent and a strong dispersing agent, the textile stock is washed, dried, subjected to conventional finishing treatments and again dried.
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