Chemical path to polyurethane polymer Utilized in production of spandex. Spandex is especially made up of a polyurea derived with the response of a diol and also a diisocyanate. Two lessons of spandex are defined by the "macrodiols". 1 class of macrodiols will be the oligomer produced from tetrahydrofuran (i. https://harryu986yho4.popup-blog.com/profile