METHOD FOR DYEING POLYAMIDE-BASED FIBER STRUCTURE

摘要

PURPOSE:To obtain a polyamide-based dyed fiber structure having a dark color and excellent fastness to dyeing. CONSTITUTION:A polyamide-based dyed fiber structure having 0.02-1.0 denier fineness of single yarn is dyed with a neutral gold-containing dye and/or a disperse dye, subjected to fixation treatment with tannic acid and tartar emetic and further subjected to alkali reduction cleaning to obtain the objective polyamide-based dyed fiber structure.