Momentive SILQUEST E-FREE 189 (3-mercaptopropyltrimethoxysilane) is an eco-friendly mercapto silane coupling agent designed to optimize filler dispersion and interfacial bonding in rubber and composites. It enhances mechanical strength, abrasion resistance, and wet electrical properties while reducing VOC emissions. Ideal for tire and cable applications, it enables rapid curing at ambient temperatures and complies with REACH standards, offering cost-efficient processing
Dual-Function Design - Mercapto bonds with polymers; methoxy links to silica/fillers
Process Efficiency - Lowers viscosity (1.057 g/mL) for seamless filler integration .
Dynamic Performance - Improves rolling resistance in tires and wet adhesion (>90%)
Sustainability - Halogen-free, ethanol emission-reducing formulation
Green Tire Manufacturing - Silica reinforcement for low rolling resistance
High-Performance Rubber - Shoe soles/hoses with enhanced heat resilience
Cable Insulation - Crosslinked polyethylene for dielectric stability
Anti-Corrosion Coatings - Metal adhesion with chemical resistance
Chemical Name | 3-Mercaptopropyltrimethoxysilane |
CAS No. | 4420-74-0 |
Density (25°C) | 1.057 g/mL |
Flash Point | 88°C |
Purity | ≥97% |
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