| 摘要 |
PROBLEM TO BE SOLVED: To produce a polyamide fiber, having a roughened surface, excellent in touch feeling and suitable as a woven or a knitted fabric by specifying the end group contents of a polyamide, a hindered amine-based compound to be added and its amount added, applying an aqueous emulsion to a melt spun yarn and roughening the surface. SOLUTION: The difference (g equiv./10<6> g) between the contents of carboxy group and amide group which are end groups of a polyamide is increased from 30 and a hindered amine-based compound having 1 or 2 substituent groups of the formula (R is H, a 1-4C alkyl or a 1-8C alkoxy) in the molecule in amount of 0.3-5 pts.wt. based on 100 pts.wt. polyamide is contained therein to carry out the melt spinning. When an aqueous emulsion is applied to the discharged yarn, unevennesses can be produced on the fiber surface without relying on eluting and removing treatments to roughen the surface. |
