Methyltrimethoxysilane
Methyltrimethoxysilane (CAS: 1185-55-3) is a trifunctional alkoxysilane supplied as a colorless transparent liquid. It acts as a silane coupling agent and crosslinker, bonding organic resins to inorganic surfaces such as glass, metal, and minerals, and is a key raw material for room-temperature-vulcanizing silicone sealants. It is used in water-repellent coatings for construction materials and in hard-coat systems for plastics, where hydrolysis of the methoxy groups builds durable siloxane networks. The liquid is easy to meter and is used under dry conditions. Customers select it where adhesion promotion and crosslinking performance are required.
• Coupling agent: bonds organic resins to glass, metal, and mineral surfaces for coatings and composites.
• Silicone sealants: a key crosslinker for RTV silicone sealant systems.
• Water repellency: used in water-repellent impregnations for concrete, masonry, and textiles.
• Hard coatings: builds abrasion-resistant siloxane networks on plastic substrates.
Product Name: Methyltrimethoxysilane
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