A PROCESS FOR DYEING DEEPLY A POLYAMIDE SYNTHETIC LEATHER

摘要

treating the polyamide artificial leather with pretreatment liquid containing quarternary ammonium salts shown in formula (I) [where R= alkyl chain ; fixing the ammonium salts; dyeing with acid dye or pre-metallized dye added by alkylamine cationic surfactant. This dyeing method solves fastness problem, especially fastness in washing, caused by using large amount of dyes to obtain thick-shade dyed fabric by pretreating the fabric with quarternary ammonium salts.