High Quality Poly(Tetrahydrofuran)/Polytetramethylene Ether Glycol, CAS NO: 25190-06-1

In the production of spandex, polytetrahydrofuran serves as the soft segment, reacting with diisocyanates (such as MDI) and chain extenders to yield polyurethane elastic fibers characterized by excellent elasticity, hydrolysis resistance, and low-temperature resistance. These fibers are widely utilized in textiles such as underwear, sportswear, swimwear, and hosiery, providing garments with a close-fitting comfort and long-lasting resilience.

Polytetrahydrofuran is a crucial raw material for the manufacture of polyurethane elastomers (PUR), including thermoplastic polyurethanes (TPU) and cast polyurethanes (CPU). Because its main chain contains no ester linkages, polyurethane elastomers derived from it exhibit exceptional resistance to low temperatures, hydrolysis, and oil. TPU products find extensive application in fields such as footwear materials (e.g., soles), films, tubing, and adhesives—particularly in scenarios demanding high levels of weather resistance and flexibility.

Polytetrahydrofuran is also employed in the preparation of thermoplastic polyester elastomers (TPEE).