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

Momentive Silquest A-1123 N-Ethylaminoisobutyltrimethoxysilane

Momentive Silquest A-1123 is an N-ethylaminoisobutyltrimethoxysilane coupling agent from the Silquest series, offering dual functionality with ethylamino and methoxy groups. It enhances adhesion between organic polymers and inorganic substrates like glass, metals, or minerals—widely used in sealants, adhesives, coatings, and mineral-filled composites for improved wetting, dispersion, and durability.
  • momentive silquest a 1123 n ethylaminoisobutyltrimethoxysilane_4e85ff9a
  • momentive silquest a 1123 n ethylaminoisobutyltrimethoxysilane_4e85ff9a

Features Of Momentive Silquest A-1123 N-Ethylaminoisobutyltrimethoxysilane

  1. Bifunctional silane coupling agent with both hydrolyzable methoxy groups and a reactive secondary amine group.

  2. Enables strong covalent bonding between organic polymers and inorganic substrates such as glass, metals, and mineral fillers.

  3. Offers improved wetting, dispersion, and interfacial adhesion in composite systems without excessive catalytic activity or premature gelation.

  4. Exhibits favorable hydrolytic stability compared to highly reactive aminosilanes due to steric hindrance from the isobutyl group.

  5. Compatible with a broad range of resins including epoxies, phenolics, polyurethanes, and acrylics.

Typical Applications Of Momentive Silquest A-1123 N-Ethylaminoisobutyltrimethoxysilane

  1. Adhesion promotion in epoxy-based structural adhesives and sealants.

  2. Surface treatment of silica, alumina, and calcium carbonate fillers in thermoset composites.

  3. Enhancement of fiber-matrix bonding in fiberglass-reinforced plastics (FRP) and pultrusion formulations.

  4. Primer additive for metal and glass substrates prior to coating or bonding operations.

  5. Performance modifier in moisture-curable polyurethane and silicone hybrid sealants.

Specifications Of Momentive Silquest A-1123 N-Ethylaminoisobutyltrimethoxysilane

Chemical TypeN-Ethylaminoisobutyltrimethoxysilane
Product FormLiquid
AppearanceColorless to pale yellow clear liquid
Primary ApplicationsCoupling agent, adhesion promoter, filler surface modifier
Key FeaturesBifunctional, hydrolyzable methoxy groups, sterically hindered secondary amine
BenefitsImproved composite mechanical properties, enhanced moisture resistance, reduced interfacial failure
Storage StabilityStable under dry, cool conditions; protect from moisture and direct sunlight
Reactivity ProfileModerate hydrolysis rate; compatible with common industrial processing conditions


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