| 摘要 |
<p>A synthetic fibers having a melting or softening temperature of 160 DEG C or more, for example, polyester fibers, are dyed with an organic coloring material having a molecular weight of 370 or more, for example, disperse dye, vat dye and phthalocyanine pigment, at a temperature of 150 DEG C or more, at a high color depth, and the resultant dyed product exhibits a high color fastness to washing or light. The synthetic fibers contain a thermal decomposition-preventing agent comprising at least one isourea of the formula I: <CHEM></p> |
