Used as a surface modifying agent in the production of silicone-based materials, enhancing adhesion between organic polymers and inorganic substrates. Commonly applied in coatings, sealants, and adhesives to improve water resistance and durability. Also serves as a coupling agent in composite materials, promoting stronger interfaces between fillers and polymer matrices. Its reactivity with hydroxyl groups makes it effective in treating glass fibers and mineral fillers for use in reinforced plastics.