Chemical path to polyurethane polymer Employed in manufacture of spandex. Spandex is mainly made up of a polyurea derived in the response of the diol plus a diisocyanate. Two classes of spandex are outlined from the "macrodiols". A person class of macrodiols is definitely the oligomer developed from tetrahydrofuran (i. https://jamesu986zho3.blogripley.com/profile