Used as a coupling agent in coatings, adhesives, and sealants to improve adhesion between organic polymers and inorganic surfaces like glass, metal, and minerals. Enhances water repellency and durability in construction materials such as concrete and masonry. Commonly applied in water-resistant treatments for stone, ceramics, and porous building materials due to its ability to form hydrophobic surfaces. Also utilized in modifying fillers and pigments for better dispersion in resin systems.