POLYAMIDE SHAPED CROSS-SECTION FIBER WITH PROPERTY FOR BRILLIANT COLORING AND PREPARATION METHOD THEREOF

摘要

A polyamide typed deformed section hollow fiber is provided to have a water-repellency property by performing a salt bath in which a dyeing acidic dye and a basic dye are mixed, to have elegant luster property and to have excellent color rendering properties to a basic dye. A polyamide typed deformed section hollow fiber is made of a basic dye salting typed copolyamide including a sulfonic acid group and has a cross section of a flat thread shape. The basic dye salting typed copolyamide including a sulfonic acid group comprises polyamide amine functional end groups of which an amount is 30meq/Kg or less.