Azo dyestuffs, free from sulfo groups, containing a 3-cyano-1,2,4-thiadiazole diazo component are disclosed. These dyestuffs are useful in dyeing and printing synthetic fibers, for example, especially polyester fibers and polypropylene fibers which have been metal modified.
本发明揭示了不含
磺酸基的偶氮
染料,其含有3-
氰基-
1,2,4-噻二唑偶氮组分。这些
染料在合成纤维的染色和印花中非常有用,特别是对于已经经过
金属改性的聚酯纤维和聚
丙烯纤维。