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

Shin-Etsu KBM-902 3-Aminopropylmethyldiethoxysilane

Shin-Etsu KBM-902 is a 3-aminopropylmethyldiethoxysilane coupling agent from Shin-Etsu’s KBM series. It enhances adhesion between organic polymers and inorganic substrates like glass, metals, or fillers. Its monoalkyl structure offers improved hydrolytic stability and reduced self-condensation versus trialkoxysilanes. Widely used in coatings, adhesives, sealants and rubber composites for superior bonding and dispersion.
  • shin etsu kbm 902 3 aminopropylmethyldiethoxysilane_38362caf
  • shin etsu kbm 902 3 aminopropylmethyldiethoxysilane_38362caf

Features Of Shin-Etsu KBM-902 3-Aminopropylmethyldiethoxysilane

  1. Highly reactive primary amine group enables strong covalent bonding with organic polymers and resins.

  2. Diethoxy functionality provides improved hydrolytic stability versus trialkoxysilanes, enhancing shelf life and handling safety.

  3. Low volatility and reduced odor compared to conventional aminosilanes, supporting safer industrial processing environments.

  4. Excellent compatibility with epoxy, phenolic, and polyurethane systems for enhanced interfacial adhesion.

  5. Enables efficient surface modification of silica, glass, and metal oxides in both aqueous and solvent-based formulations.

Typical Applications Of Shin-Etsu KBM-902 3-Aminopropylmethyldiethoxysilane

  1. Adhesion promoter in epoxy-based composites and structural adhesives.

  2. Surface modifier for silica fillers in high-performance rubber compounds (e.g., tire treads).

  3. Functional additive in waterborne coatings and sealants to improve substrate wetting and durability.

  4. Coupling agent in fiber-reinforced plastics (FRP) for glass and carbon fiber composites.

  5. Pre-treatment agent for metal and mineral substrates prior to painting or bonding operations.

Specifications Of Shin-Etsu KBM-902 3-Aminopropylmethyldiethoxysilane

Chemical TypeAminosilane coupling agent
Product FormLiquid
AppearanceColorless to pale yellow clear liquid
Primary ApplicationsAdhesion promotion, surface modification, filler treatment
Key FeaturesDiethoxy structure, primary amine functionality, low volatility
BenefitsImproved hydrolytic stability, enhanced polymer–filler interface, safer handling
Molecular Weight (approx.)221.4 g/mol
Refractive Index (25°C)1.420–1.425


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