POLYAMIDE-BASED FIBER STRUCTURE

摘要

PROBLEM TO BE SOLVED: To provide a dyeing method capable of keeping clear hue without causing change and dullness of hue by a dye-fixing agent and satisfying both of the good wet color fastness and the good color fastness to light and to provide a polyamide-based fiber structure obtained by the method.

SOLUTION: The polyamide-based fiber structure improved in wet color fastness while keeping clear hue and good color fastness to light is obtained by covering a polyamide-based fiber structure dyed with an acidic dye and an anionic dye such as a metal complex dye with an aliphatic polymer having a carboxyl group.

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