Used as a coupling agent in composite materials to improve adhesion between organic polymers and inorganic surfaces, especially in sealants, adhesives, and coatings. Enhances moisture resistance and mechanical strength in silicone-modified resins. Commonly applied in the production of hybrid materials where strong interfacial bonding is required, such as in glass fiber treatments and electronic encapsulants. Also utilized in specialty coatings to promote crosslinking and durability on metal and glass substrates.