Used as a cross-linking agent in polymer synthesis, particularly in the production of polyurethanes and epoxy resins. Its rigid oxetane ring and dual hydroxyl groups enhance thermal stability and mechanical strength of the resulting polymers. Commonly applied in coatings, adhesives, and electronic encapsulants where durability and resistance to environmental stress are required. Also serves as a building block in specialty monomers for radiation-curable systems due to its reactivity under cationic conditions.