PROCESS FOR PROVIDING POLYAMIDE MATERIAL HAVING POLLUTION RESISTANCE FORCE

摘要

PURPOSE: To obtain a polyamide material imparted with stain resistance to acid colorants by applying a specific amount of a stain resist agent to a polyamide material followed by applying a sufficient amount of stain resist agent to the resultant polyamide material by foam application. CONSTITUTION: This fibrous polyamide material with a stain resistance rating of at least about 5 is obtained by applying by immersion or padding of the material or applying to the fiber during spinning thereof 0.01-0.3 (pref. 0.05-0.15) wt.%, based on the material, of a stain resist agent (e.g. a partially sulfonated novolak resin) followed by applying a sufficient amount of a stain resist agent by foam application to the resultant polyamide material.