| abstract |
A synthetic fibers having a melting or softening temperature of 160° 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° C. or more, at a high color depth, and the resultant dyed product exhibits a high color fastness to washing or light. |