Used as a coupling agent in coatings and adhesives to improve adhesion between organic polymers and inorganic surfaces such as glass, metals, and ceramics. Enhances durability and moisture resistance in sealants and protective films. Commonly applied in surface modification of nanoparticles and fillers for composites, promoting better dispersion and interfacial bonding. Also utilized in the production of silane-treated mineral fillers for rubber and plastic industries to improve mechanical properties and processing characteristics.

Popular in paints, printing inks, and various coatings to enhance adhesion on moist or wet surfaces, as the silane group can react with water to form bonds with the substrate.

Additionally, used in the surface modification of nanoparticles or silica gel to improve compatibility with polymers and enhance the stability of dispersion systems.

In some cases, serves as an intermediate to introduce chlorine groups onto material surfaces for further reactions with other substances, such as creating antimicrobial surfaces or specially tailored surfaces in biomaterials research.