3-Aminopropyltrimethoxysilane (AMMO / APTMS)

3-Aminopropyltrimethoxysilane (AMMO / APTMS) is an amino-functional organosilane coupling agent that contains a primary amine group and three hydrolyzable methoxy groups. This structure allows it to form durable chemical bonds between organic polymers and inorganic substrates, improving interfacial adhesion and material performance.

AMMO / APTMS is widely used as an adhesion promoter, surface modifier, and coupling agent in coatings, adhesives, sealants, and composites. It enhances mechanical strength, water resistance, and corrosion protection in treated systems.

Key Features:

• Provides strong covalent bonding to glass, metal, and mineral surfaces

• Improves adhesion and dispersion in filled and reinforced systems

• Enhances moisture resistance, corrosion protection, and durability

• Compatible with epoxy, urethane, and phenolic resins

Applications:

• Adhesives, sealants, and coatings

• Glass fiber sizing and mineral-filled composites

• Surface treatment and primer formulations

• Epoxy and polyurethane resin modification

CAS # 13822-56-5