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

Shin-Etsu KBE-1003 Vinyltriethoxysilane

Shin-Etsu KBE-1003 Vinyltriethoxysilane is a high-purity vinyl-functional silane coupling agent from Shin-Etsu’s KBE series. It enhances adhesion between organic polymers and inorganic substrates like glass, metals, or fillers. Widely used in RTV silicones, coatings, and composites, it improves mechanical strength, moisture resistance, and crosslinking efficiency through its reactive vinyl and hydrolyzable ethoxy groups.
  • shin etsu kbe 1003 vinyltriethoxysilane_5b22b1ba
  • shin etsu kbe 1003 vinyltriethoxysilane_5b22b1ba

Features Of Shin-Etsu KBE-1003 Vinyltriethoxysilane

  1. High-purity vinyl-functional silane with excellent hydrolytic stability in anhydrous conditions.

  2. Reactive vinyl group enables covalent bonding with organic polymers during free-radical curing.

  3. Ethoxy groups provide controlled hydrolysis and condensation for strong interfacial adhesion to inorganic substrates.

  4. Low volatility and favorable handling characteristics compared to chlorosilane alternatives.

  5. Consistent batch-to-batch performance validated under Shin-Etsu’s stringent quality control protocols.

Typical Applications Of Shin-Etsu KBE-1003 Vinyltriethoxysilane

  1. Adhesion promoter in glass-fiber reinforced plastics (GFRP) and composites.

  2. Surface modifier for silica, calcium carbonate, and clay fillers in thermoset resins.

  3. Coating additive to enhance scratch resistance and substrate bonding in automotive clearcoats.

  4. Coupling agent in silicone-modified acrylic emulsions for architectural coatings.

Specifications Of Shin-Etsu KBE-1003 Vinyltriethoxysilane

Chemical TypeVinyltriethoxysilane
Molecular FormulaC8H18O3Si
Product FormClear, colorless to pale yellow liquid
AppearanceHomogeneous, mobile liquid at 25°C
Density (25°C)0.92–0.94 g/cm³
Refractive Index (25°C)1.395–1.405
Boiling Point229–231°C (760 mmHg)
Storage Stability≥12 months in sealed container under dry, cool conditions


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