COLORED POLYAMIDE FIBER AND PROCESS FOR PRODUCING THE SAME

摘要

Colored polyamide fibers which comprise a polyamide resin, a pigment, a coupling agent, and a compound represented by the following general formula (I): R'-CO-NH-R-NH-CO-R" (I) (wherein R represents C1-4 alkylene; and R' and R" each independently represents a C9-18 aliphatic hydrocarbon group). Even when a raw material composition containing the pigment in a high concentration is used, the colored polyamide fibers can be produced therefrom without causing bending or fiber breakage during melt spinning. The pigment has been evenly dispersed in the colored polyamide fibers. The fibers hence has a high color density and a high strength. The colored polyamide fibers are suitable for use in producing artificial leathers.