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

Evonik Dynasylan DAMO 3-(2-Aminoethylamino)propyltrimethoxysilane

Evonik Dynasylan DAMO is a bifunctional aminosilane coupling agent featuring 3-(2-aminoethylamino)propyltrimethoxysilane structure. It enhances adhesion between organic polymers and inorganic substrates like glass, metals, or minerals. Widely used in sealants, adhesives, coatings, and composites for improved mechanical strength, moisture resistance, and interfacial bonding performance.
  • evonik dynasylan damo 3 2 aminoethylamino propyltrimethoxysilane_71868905
  • evonik dynasylan damo 3 2 aminoethylamino propyltrimethoxysilane_71868905

Features Of Evonik Dynasylan DAMO 3-(2-Aminoethylamino)propyltrimethoxysilane

  1. Bifunctional silane with two distinct amine groups—primary and secondary—enabling dual reactivity toward both inorganic surfaces and organic polymers.

  2. High hydrolytic stability due to the trimethoxysilane functionality, ensuring consistent performance during storage and formulation.

  3. Excellent coupling efficiency between silica-based fillers (e.g., glass fibers, fumed silica) and epoxy, phenolic, or polyurethane resins.

  4. Low volatility and favorable handling characteristics compared to analogous aminopropylsilanes with ethoxy groups.

  5. Enables enhanced interfacial adhesion, mechanical strength, and moisture resistance in composite systems.

Typical Applications Of Evonik Dynasylan DAMO 3-(2-Aminoethylamino)propyltrimethoxysilane

  1. Surface treatment of mineral fillers and reinforcements in high-performance composites for aerospace and automotive components.

  2. Adhesion promoter in epoxy-based structural adhesives and encapsulants for electronics packaging.

  3. Functional additive in fiber-reinforced polymer (FRP) matrices to improve fiber–matrix bonding and delamination resistance.

  4. Modifier for silica gels and sol-gel coatings requiring enhanced crosslink density and thermal stability.

  5. Key ingredient in specialty sealants and caulks where long-term durability under humid conditions is critical.

Specifications Of Evonik Dynasylan DAMO 3-(2-Aminoethylamino)propyltrimethoxysilane

Chemical TypeAminosilane coupling agent (bifunctional)
Product FormLiquid
AppearanceColorless to pale yellow clear liquid
Molecular Weight248.4 g/mol
Density (20 °C)1.02–1.04 g/cm³
Refractive Index (20 °C)1.435–1.445
pH (1% aqueous solution)10.5–11.5
SolubilityMiscible with water, alcohols, acetone, and many common organic solvents


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