3-Butenyltriethoxysilane

3-Butenyltriethoxysilane (CAS 57813-67-9) is an organosilane coupling agent with a terminal vinyl group that enables covalent bonding between inorganic substrates and organic polymer matrices.

Where is 3-Butenyltriethoxysilane used?

• Rubber and tire manufacturing: bonds silica fillers to elastomer chains during vulcanization, improving reinforcement efficiency and reducing rolling resistance
• Electronics: surface primer on glass and ceramic substrates to promote adhesion in encapsulants and conformal coatings
• Plastics compounding: modifies mineral filler surfaces, including silica and glass fiber, improving dispersion and interfacial strength in thermoplastic and thermoset systems
• The terminal alkene supports co-polymerization and cross-linking in specialty silicone formulations and UV-curable systems.

Good to know: Purity specifications typically range from 97% upward, with high-purity grades for sensitive electronic and specialty polymer applications.

Commercial specifications

• Purity typically 97% upward
• High-purity grades available
• Drums or intermediate bulk containers for industrial volumes; smaller quantities for R&D