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

Shin-Etsu KBE-585 3-Ureidopropyltriethoxysilane

Shin-Etsu KBE-585 is a 3-ureidopropyltriethoxysilane coupling agent from Shin-Etsu’s KBE series, designed to enhance adhesion between organic polymers and inorganic substrates like glass, metals, or fillers. It improves mechanical strength, moisture resistance, and dispersion stability in composites, coatings, and sealants through dual-reactive functionality—hydrolyzable ethoxy groups and a ureido moiety.
  • shin etsu kbe 585 3 ureidopropyltriethoxysilane_89a77885
  • shin etsu kbe 585 3 ureidopropyltriethoxysilane_89a77885

Features Of Shin-Etsu KBE-585 3-Ureidopropyltriethoxysilane

  1. Reactive bifunctional silane coupling agent with both hydrolyzable ethoxy groups and a ureido functional group.

  2. Enhances adhesion between inorganic substrates (e.g., glass, metals, silica) and organic polymers (e.g., epoxy, polyurethane, acrylic).

  3. Improves mechanical properties and moisture resistance of filled composites and coatings.

  4. Stable liquid at room temperature with low volatility and favorable handling characteristics.

  5. Enables covalent bonding via silanol condensation with surfaces and hydrogen-bonding or covalent reaction via the ureido group with resins.

Typical Applications Of Shin-Etsu KBE-585 3-Ureidopropyltriethoxysilane

  1. Epoxy resin composites for electrical encapsulation and printed circuit board laminates.

  2. Adhesion promoters in automotive sealants and structural adhesives.

  3. Surface treatment of silica fillers and glass fibers in rubber and thermoset plastics.

  4. Primer formulations for metal and glass substrates in architectural and industrial coatings.

  5. Hybrid sol-gel systems for functionalized coatings and corrosion-resistant layers.

Specifications Of Shin-Etsu KBE-585 3-Ureidopropyltriethoxysilane

Chemical TypeOrganofunctional trialkoxysilane
Product FormLiquid
AppearanceColorless to pale yellow clear liquid
Molecular Weight249.4 g/mol
Density (25°C)1.02–1.04 g/cm³
Refractive Index (25°C)1.435–1.445
pH (1% aqueous solution)5.0–7.0
SolubilityMiscible with common alcohols, acetone, and aromatic hydrocarbons; hydrolyzes in water


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