Used as a chain extender in polyurethane systems, particularly in high-performance elastomers and coatings. Its unique structure with multiple hydroxyethoxy groups enables controlled reactivity with isocyanates, leading to improved flexibility and thermal stability in the final polymer. Commonly applied in specialty adhesives and sealants where enhanced hydrolytic resistance and mechanical properties are required. Also utilized in 3D printing resins to modify cure behavior and toughness. Shows compatibility with both aromatic and aliphatic isocyanate formulations, making it suitable for a range of industrial applications.