Used primarily as a silicone-based coupling agent in specialty coatings and sealants, enhancing adhesion between organic polymers and inorganic surfaces. Its chlorinated structure provides reactivity with metal oxides and glass, making it effective in primers for high-performance elastomer bonding. Also utilized in the formulation of water-repellent treatments for construction materials due to its long alkyl chain and hydrophobic silane groups. Shows application in modifying filler surfaces in composite materials to improve dispersion and compatibility with polymer matrices. Limited use in electronics encapsulation where moisture resistance and thermal stability are required.