Cationic dyeable polyurethane elastic yarn and method of production

摘要

Disclosed is a polyurethane elastic yarn which is excellent in elongation, resilience, heat resistance, alkali resistance, chemical resistance, and capability of being dyed with a cationic dye and which is suitable for use in a stretch cloth, a wearing apparel or the like. The polyurethane elastic yarn comprises: an clastic yarn comprising a polyurethane mainly composed of a polymer diol and a diisocyanate, and a polymer of a compound having a sulfonate group contained in the elastic yarn.