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

Shin-Etsu KBM-303 Silane Coupling Agent

Shin-Etsu KBM-303 (2-(3,4-epoxycyclohexyl)ethyltrimethoxysilane) is an epoxy-functional silane coupling agent that enhances interfacial adhesion between organic polymers and inorganic substrates. It improves mechanical strength, moisture resistance, and electrical properties in composites, coatings, and adhesives. Compatible with thermoplastics, thermosets, and elastomers, it offers fast curing and solvent-free processing, making it ideal for demanding applications in electronics and structural materials

Features Of Shin-Etsu KBM-303 Silane Coupling Agent

  1. Dual Reactivity - Epoxy group bonds with resins; methoxy group links to glass/metals

  2. Performance Boost - Enhances tensile strength, chemical/UV resistance, and dielectric properties

  3. Process Efficiency - Low viscosity (1.06 g/cm³) for easy integration

  4. Broad Compatibility - Works with epoxy, polyurethane, polyester, and nylon

  5. Environmental Safety - REACH/RoHS compliant, suitable for waterborne systems

Typical Applications Of Shin-Etsu KBM-303 Silane Coupling Agent

  1. Electronic Encapsulation - Moisture-resistant sealing for PCBs

  2. Aerospace Composites - Glass fiber treatment for lightweight FRP

  3. Marine Coatings - Corrosion protection for metal substrates

  4. Structural Adhesives - High-strength bonding in automotive

  5. Industrial Inks - Durable printing on non-porous surfaces

Specifications Of Shin-Etsu KBM-303 Silane Coupling Agent

Chemical Name
2-(3,4-Epoxycyclohexyl)ethyltrimethoxysilane
Appearance
Colorless to light yellow transparent liquid
Active Content
≥98%
Viscosity
Low viscosity
Density (25℃)
1.063 g/ml
Refractive Index (25℃)
1.427
Boiling Point
290℃
Flash Point
149℃
Packaging
16KG/drum


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