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Chemical route to polyurethane polymer Utilized in creation of spandex. Spandex is mainly composed of a polyurea derived through the response of the diol along with a diisocyanate. Two courses of spandex are outlined via the "macrodiols". 1 class of macrodiols could be the oligomer created from tetrahydrofuran (i.Spandex is a polymer; its macromole