Name: Momentive Silquest A-151 Vinyltriethoxysilane
Brand: Guangzhou Eric Wei Chemical Co., Ltd.

Features Of Momentive Silquest A-151 Vinyltriethoxysilane

Reactive vinyl group enables covalent bonding with organic polymers during free-radical curing processes.
Three hydrolyzable ethoxy groups provide strong, durable siloxane bonds with inorganic substrates such as glass, metals, and minerals.
Acts as an effective coupling agent to enhance interfacial adhesion between organic resins and inorganic fillers or reinforcements.
Improves mechanical properties—including tensile strength, flexural modulus, and impact resistance—in filled composites.
Offers excellent shelf stability in anhydrous conditions and compatibility with common vinyl monomers and unsaturated polyester resins.

Typical Applications Of Momentive Silquest A-151 Vinyltriethoxysilane

Glass fiber sizing for reinforced thermoset composites (e.g., SMC/BMC, pultrusion, filament winding).
Surface treatment of silica, clay, and calcium carbonate fillers in rubber and plastic compounds.
Adhesion promoter in pressure-sensitive adhesives and sealants for improved substrate bonding.
Modifier in solvent-based and high-solids coatings for enhanced durability and corrosion resistance on metal substrates.

Chemical Type	Vinyl-functional trialkoxysilane
Product Form	Liquid
Appearance	Colorless to pale yellow clear liquid
Primary Applications	Coupling agent for glass fibers, mineral fillers, and adhesion promotion
Key Features	Vinyl reactivity + hydrolyzable ethoxy groups for dual-phase bonding
Benefits	Improved composite strength, filler dispersion, and moisture resistance
Molecular Weight	208.3 g/mol
Boiling Point (760 mmHg)	228 °C (approx.)

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