Used as a soft segment in the production of high-performance polyurethanes, especially in applications requiring flexibility, durability, and resistance to hydrolysis and UV degradation. Commonly found in coatings, adhesives, sealants, and elastomers where long-term stability and low-temperature performance are critical. Its biodegradability makes it suitable for eco-friendly and biomedical applications such as drug delivery systems and tissue engineering scaffolds. Also used in 3D printing filaments for its excellent layer adhesion and toughness.