Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Momentive SILQUEST A-187 Silicate Coupling Agent

Momentive SILQUEST A-187 (γ-glycidoxypropyltrimethoxysilane) is an epoxy-functional silane coupling agent that enhances adhesion between organic resins (epoxy, acrylic) and inorganic substrates (glass, metals). Its rapid hydrolysis forms durable siloxane bonds, improving wet adhesion (>90% retention) and mechanical strength. Ideal for FRP, coatings, and adhesives, it complies with REACH/RoHS and reduces viscosity for easier processing. Applications include automotive composites, waterproof coatings, and cable insulation

Features Of Momentive SILQUEST A-187 Silicate Coupling Agent

  1. Interfacial Reinforcement - Epoxy groups bond with resins; methoxy links to fillers/fibers, optimizing stress transfer

  2. Process Efficiency - Low viscosity (3 cSt) ensures homogeneous dispersion in formulations

  3. Durability - Enhances UV/chemical resistance (salt spray >1,000 hours) in harsh environments

  4. Multi-Matrix Compatibility - Works with polyurethane, polysulfide, and acrylic system

Typical Applications Of Momentive SILQUEST A-187 Silicate Coupling Agent

  1. FRP Composites - Glass fiber sizing for automotive/construction (30% strength increase)

  2. Wire Insulation - Clay-filled EPDM systems with improved dielectric properties

  3. Industrial Coatings - Metal primers with corrosion resistance

Specifications Of Momentive SILQUEST A-187 Silicate Coupling Agent

Chemical Name
γ-Glycidoxypropyltrimethoxysilane
Appearance
Colorless to light yellow transparent liquid
Molecular Weight
236
Specific Gravity (25/25℃)
1.07
Flash Point (Closed Cup)
>101℃
Active Content
>98%
Packaging
20KG/drum


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