Examine This Report on covered spandex yarn
Chemical route to polyurethane polymer Utilized in creation of spandex. Spandex is mainly composed of a polyurea derived through the response of the diol as well as a diisocyanate. Two courses of spandex are described by the "macrodiols". A single course of macrodiols is definitely the oligomer created from tetrahydrofuran (i.Durability: Spandex-co