A method for the production of spandex fibers and spandex fibers produced therefrom

摘要

PROBLEM TO BE SOLVED: To produce a product excellent in appearance grade, fitness, wearability, a feeling of wearing, etc. ;SOLUTION: This polyurethane yarn contains a polyol, a diisocyanate and a diol which are main constituent components of the polyurethane and further a polyvinylpyrrolidone and/or its copolymer. The content of the polyvinylpyrrolidone and/or its copolymer is ≥0.1 and ≤10 wt.%. The K-value of the polyvinylpyrrolidone and/or its copolymer is ≥20 and ≤70.;COPYRIGHT: (C)1999,JPO