Phenyltriethoxysilane
Phenyltriethoxysilane (CAS: 780-69-8) is an organosilane coupling agent combining three hydrolyzable ethoxy groups with a phenyl substituent on silicon. Moisture-catalyzed hydrolysis generates silanols that condense onto glass, silica, and metal oxide surfaces, while the phenyl ring enhances thermal stability, UV resistance, and compatibility with aromatic polymer systems. This clear liquid is used as a key co-monomer in phenyl silicone resin synthesis, imparting heat resistance and refractive index control for high-temperature coatings, encapsulants, and optical materials. It also serves as a surface modifier improving filler dispersion in rubber and plastics, and as an adhesion promoter in sealants and adhesives bonding to mineral substrates. With its dual organic-inorganic reactivity and thermal performance, phenyltriethoxysilane is essential for advanced silicone formulations in electronics, aerospace, and protective coatings.
– Phenyl Silicone Resins: Used as a primary co-monomer producing heat-resistant resins for high-temperature coatings, varnishes, and encapsulants.
– Optical and Electronic Materials: Serves in LED encapsulants and optical lenses where refractive index control and UV stability are critical.
– Surface Treatment: Applied to glass fibers and mineral fillers improving adhesion and dispersion in composites and rubber.
– Adhesion Promotion: Functions as a primer enhancing bond strength between sealants, adhesives, and glass or ceramic substrates.
Product Name: Phenyltriethoxysilane
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