Used as a surface treatment agent in silicone-based coatings and adhesives. Enhances adhesion between organic polymers and inorganic substrates like glass or metal. Commonly applied in sealants to improve water resistance and durability. Also functions as a coupling agent in composite materials, improving mechanical strength and stability under humid conditions. Its bifunctional silane structure allows for cross-linking in hybrid organic-inorganic systems, making it valuable in specialty coatings and protective films.