| 摘要 |
PROBLEM TO BE SOLVED: To efficiently obtain polyamide-based fibers which have excellent heat resistance and excellent dyeing levelness, by imparting an antioxidant to the polyamide-based fibers after melt-spun and solidified and before oiled with a spinning oil. SOLUTION: This method for producing polyamide-based fibers comprises imparting an antioxidant preferably (i) a hindered amine-based compound [for example, dimethyl succinate-1-(2-hydroxyethyl)-4hydroxy-2,2,6,6- tetramethylpiperidine polycondensate], (ii) a hindered phenolic compound for example, triethyleneglycol-bis[3-(3-t-butyl-5-methyl-4-hydroxyphenyl)propionate]}, (iii) a semicarbazide-based compound} to the polyamide-based fibers after melt- spun and solidified and before the undrawn fibers are oiled with a spinning oil and then wound up. |
