| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for dyeing a polytrimethylene terephthalate fiber excellent in color fastness. SOLUTION: This method for dyeing a polytrimethylene terephthalate fiber in an aqueous stain solution containing disperse dye comprises: dyeing the fiber at 90 to 140 deg.C for 15 to 90 minutes; setting it at >=55 deg.C and <= the boiling point of the stain solution without or with cooling the stain solution; and removing the waste water and washing the fiber. |
