POLYURETHANE ELASTIC YARN

摘要

PURPOSE: Disclosed is a polyurethane elastic yarn enabling low-temperature setting, developing soft fitting feeling and giving a cloth by a combination with other material without deteriorating the feeling and function of both materials. CONSTITUTION: The objective polyurethane elastic yarn satisfies the following conditions (1) to (3). (1) The half-width angle of the maximum peak intensity of an azimuthal angle scan in small angle X-ray scattering measurement is more than 60degree. (2) The half-width angle of equatorial direction in small angle X-ray scattering measurement is less than 2.5degree. (3) The maximum shrinkage stress peak temperature in thermal stress measurement is less than 130°C.