Polytetrahydrofuran, also called poly(tetramethylene ether) glycol or poly(tetramethylene oxide), is a chemical compound. It can be viewed as a polymer of tetrahydrofuran, or as the polyether derived from 1,4-butanediol.
P 1554 (OTTO) Poly(tetrahydrofuran) Cas 25190-06-1 - used in the manufacture of artificial leather. These elastomers are either polyurethanes made by reacting PTMEG with diisocyanates, or polyesters made by reacting PTMEG with diacids or their derivatives.