Elastic fabric comprising a polyurethane elastic fiber made from a polyether based polyol

摘要

To provide elastic fabric that has comfortable wear and fit even in thin and light fabric by using a high-powered polyurethane elastic fiber that has at least 1.5 times the active force and recovery per unit fineness at the time of 100 to 200% elongation compared to conventional polyurethane elastic fiber. Resolution means an elastic fabric comprising a polyurethane elastic fiber made of a polyol, with a molecular weight between 450 and 1600 with a ratio of weight average molecular weight to number average molecular weight of at least 1.8, an organic diisocyanate compound, and a diamine compound.

主权项

1. An elastic fabric comprising a polyurethane elastic fiber made of a polyether based polyol with a minimum number average molecular weight of about 450 and a maximum of about 1600, an organic diisocyanate compound, and a diamine compound, wherein the reaction equivalent ratio (molar ratio or capping ratio) of the organic diisocyanate compound to the polyol is in the range of 1.3:1 to 1.7:1.