The Definitive Guide to what is spandex yarn
Chemical path to polyurethane polymer Utilized in production of spandex. Spandex is especially made up of a polyurea derived from your response of the diol as well as a diisocyanate. Two classes of spandex are described through the "macrodiols". 1 course of macrodiols is the oligomer developed from tetrahydrofuran (i.The very first spandex fibers w