Chemical route to polyurethane polymer Utilized in manufacture of spandex. Spandex is mainly composed of a polyurea derived within the reaction of a diol along with a diisocyanate. Two lessons of spandex are described with the "macrodiols". One particular class of macrodiols is the oligomer manufactured from tetrahydrofuran (i. The https://stevef431ovc9.wikicommunication.com/user