Discoloration-resistant and chlorine-resistant Spandex Fiber and Preparation Method thereof

摘要

PURPOSE: A method for fabricating a spandex fiber with improved discoloration resistance and chlorine resistance is provided to maintain the physical properties of polyurethane such as gripping force, tearing strength, rupture strength, and elasticity. CONSTITUTION: A method for fabricating spandex fiber with improved discoloration resistance and chlorine resistance comprises: a step o reacting organic diisocyanate and diol to prepare a polyurethane precursor; a step of dissolving the polyurethane precursor in an organic solvent; and a step of reacting diamine and monoamine to prepare a polyurethane solution.