The Definitive Guide to what is spandex yarn
Chemical route to polyurethane polymer Employed in creation of spandex. Spandex is especially composed of a polyurea derived through the response of a diol as well as a diisocyanate. Two courses of spandex are described by the "macrodiols". Just one class of macrodiols is definitely the oligomer created from tetrahydrofuran (i.The Outstanding elast