| 摘要 |
PROBLEM TO BE SOLVED: To obtain a fiber structure that can inhibit the dye from discoloring with high color fastness by subjecting synthetic fibers containing (hot) water-soluble polyalkylene glycol to wet heat treatment in a bath including reduction inhibitors and dyes. SOLUTION: At least one of synthetic fiber selected from polyester fibers and polyamide fibers containing at least one of polyalkylene glycol selected from water- or hot water-soluble polyethylene glycol, polypropylene glycol and polyethylene oxide in an amount of 0.2-80%, preferably 5-50% is subjected to the wet heat treatment in one bath solution containing a reduction inhibitor, for example, m-nitrobenzenesulfonic acid or the like and dyes at a temperature of >=80 deg.C. |
