Chemical path to polyurethane polymer used in creation of spandex. Spandex is mainly composed of a polyurea derived through the reaction of a diol and also a diisocyanate. Two courses of spandex are described through the "macrodiols". One course of macrodiols is the oligomer created from tetrahydrofuran (i. When you https://elderq517wxx5.blogsvila.com/profile