Name: Momentive Silquest A-1120 N-beta-(aminoethyl)-gamma-aminopropyltrimethoxysilane
Brand: Guangzhou Eric Wei Chemical Co., Ltd.

Features Of Momentive Silquest A-1120 N-beta-(aminoethyl)-gamma-aminopropyltrimethoxysilane

Bifunctional amino silane with two distinct primary amine groups—ethylenediamine-type (–CH₂CH₂NH₂) and propylamine-type (–CH₂CH₂CH₂NH₂)—enabling versatile covalent coupling to both organic polymers and inorganic substrates.
Trimethoxy functionality provides rapid hydrolysis and strong condensation reactivity with metal oxides, glass, silica, and other hydroxylated surfaces.
Enhanced compatibility with epoxy, phenolic, polyurethane, and acrylic resin systems due to balanced basicity and molecular flexibility.
Improves interfacial adhesion, moisture resistance, and mechanical durability in filled composites and adhesive formulations.
Stable liquid at room temperature with low volatility and favorable handling characteristics for industrial-scale processing.

Typical Applications Of Momentive Silquest A-1120 N-beta-(aminoethyl)-gamma-aminopropyltrimethoxysilane

Adhesion promoter in structural adhesives and sealants for automotive and aerospace bonding of metals, composites, and coated substrates.
Surface modifier for silica, glass fibers, and mineral fillers in high-performance thermoset composites (e.g., epoxy-based wind blade resins).
Functional additive in waterborne and solventborne coatings to enhance corrosion protection and substrate wetting on steel and aluminum.
Coupling agent in rubber-to-metal bonding systems, especially for tire cord adhesion and industrial hose reinforcement.
Pre-treatment component in primer formulations for electronics encapsulation and underfill materials requiring thermal stability and dielectric integrity.

Chemical Type	Amino-functional alkoxysilane
Product Form	Clear, colorless to pale yellow liquid
Appearance	Homogeneous liquid, free from visible particulates or phase separation
Primary Applications	Adhesion promotion, filler surface treatment, coating formulation, rubber compounding
Key Features	Bifunctional primary amines, trimethoxy silane, hydrolyzable, organofunctional coupling agent
Benefits	Improved interfacial bonding, enhanced composite strength, reduced moisture sensitivity, broad resin compatibility
pH (1% in water)	10.5–11.5
Specific Gravity (25°C)	1.02–1.04 g/cm³

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