| abstract |
The objective of this invention is to provide a polyurethane elastic yarn which is excellent in heat resistance, high elastic recovery property and high strength and elongation, even being dyed at high temperature having unsaturated fatty acid or heavy metal attached on the yarn. The said polyurethane elastic yarn comprises an elastic yarn comprising a polyurethane mainly composed of a polymer diol and a diisocyanate, and containing (a) hindered phenol compound, (b) N,N-dialkyl semicarbazide compound, and nitrogen-containing aromatic compound, and the content of the nitrogen-containing aromatic compound is more than 0.01% by weight and less than 0.30% by weight. |