Momentive SILQUEST A-LINK599 is a thiocarboxylate-functional silane coupling agent with octanoyl-blocked mercapto groups, designed to enhance adhesion in rubber, coatings, and composites. It offers low odor, volatility, and delayed reactivity until activation, ensuring superior shelf stability. Ideal for automotive sealants and rubber products, it improves wet adhesion (>90% retention) and chemical resistance while complying with REACH standards
Controlled Reactivity - Octanoyl blocking prevents premature sulfur activation, enabling stable storage and processing
Interfacial Bonding - Hydrolyzes to active mercaptosilane, forming robust resin-substrate bonds
Process Efficiency - Low viscosity (1.05 g/cm³) facilitates filler dispersion and reduces mixing steps
Multi-Substrate Adhesion - Bonds glass, metals, and automotive topcoats (leaded/lead-free frits)
Sustainability - Halogen-free, reduces VOC emissions in formulations
Automotive Windshield Sealants - Superior adhesion to glass and car paints
High-Performance Tires - Silica coupling for reduced rolling resistance
Rubber Hoses/Rollers - Enhances heat resilience and mechanical strength .
Wire & Cable Insulation - Improves dielectric properties and weather resistance
Chemical Name | Octanoyl-blocked mercaptosilane |
CAS No. | Not disclosed |
Density (25°C) | ~1.05 g/cm³ |
Flash Point | >100°C (estimated) |
Active Content | ≥97% |
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