Used as a coupling agent in composite materials to improve adhesion between organic polymers and inorganic surfaces such as glass, metals, and minerals. Enhances mechanical strength and durability in coatings, adhesives, and sealants. Commonly applied in fiberglass reinforcement, where it improves wet bond strength and moisture resistance. Also utilized in mineral-filled plastics to increase dispersion and interfacial bonding. Frequently employed in silicone-modified resins to promote crosslinking and improve thermal and chemical resistance. Its dual amine functionality allows for use in epoxy curing agents and in the modification of silica nanoparticles for advanced functional materials.