POLYURETHANE COMPOSITION FOR HIGH TENACITY SPANDEX FIBER, AND SPANDEX FIBER PREPARED USING THE POLYURETHANE COMPOSITION

摘要

PURPOSE: A polyurethane resin composition for spandex fibers with excellent strength is provided to enhance the strength without reduction of thermal resistance. CONSTITUTION: A polyurethane resin composition for spandex fibers is prepared by reacting organic diisocynate and polymer diol to prepare a polyurethane precursor; and a step of dissolving the precursor in organic solvent and reacting chain extender diamine and chain stopper monoamine to mix amine.