Products Center > Aminosilane > 3-Aminopropyltriethoxysilane


Product details

1.Amino and methoxy groups are used to couple organic polymers and inorganic fillers respectively to enhance their adhesion and improve the mechanical, electrical, water resistance, anti-aging and other properties of the product. 

Used in mineral filled thermoplastic and thermosetting resins such as phenolic, polyester, epoxy, PBT, polyamide, carbonate, etc., can greatly improve the dry and wet flexural strength, compressive strength, shear strength and other physical mechanics properties and wet electrical properties of plastics, and improve the wettability and dispersion of fillers in polymers. In resin sand casting, it enhances the adhesion of resin silica sand and improves the strength and moisture resistance of molding sand. In the production of fiberglass wool and mineral wool, adding it to the phenolic binder can improve moisture resistance and increase compressive resilience.

2.Excellent adhesion accelerator, can be used in polyurethane, epoxy, nitrile, phenolic adhesives and sealing materials to improve the dispersion of pigments and improve the adhesion to glass, aluminum and iron metals. It is also suitable for polyurethane, epoxy and acrylic latex coatings.

Product physical indicators

 CAS NO 919-30-2
 Density at 25℃ 0.95g/ml
 Boiling Point 220℃
 Refractive Index(25℃) 1.420
 Flash Point 80~90℃
 Purity ≥95%
 Appearance Colorless transparent liquid.
 Solubility Soluble in alcohol, easily hydrolyzed.

Use and effect

Coatings, adhesives and sealants

KH-550 is a good adhesion promoter in acrylic coatings, adhesives and sealants. It is used with polysulfides, urethanes, room temperature vulcanised silicone rubber,epoxy resins, nitrile rubbers, phenolic resins in adhesives and sealants, where it increases the dispersion of the filler and maximises the adhesion of the filler to glass,aluminium and steel.

Glass-reinforced resin systems

In glass fibre reinforced thermosetting plastics, KH-550  can greatly improve and enhance the physical and mechanical properties such as dry and wet flexural strength, compressive strength, shear strength, etc. of plastics and wet electrical properties.

Glass fiber and mineral wool insulation

used as an additive in phenolic resin binders,KH-550  gives excellent moisture resistance and elastic recovery.

Mineral-filled resin systems

KH-550 helps to maximise the physical and electrical properties of mineral-filled phenolic resins, epoxy resins, polyamides, polyterephthalic acid and many other thermoset and thermoplastic composites. Wetting and dispersion of the filler in the polymer matrix is also typically improved.

Foundry applications

In shell molding, it can help strengthen the bond between the phenolic binder and foundry sand.

Grinding wheels

In the manufacture of grinding wheels, KH-550 helps to improve the phenolic resin bonding and water resistance of abrasion-resistant self-hardening sand.


Sealed, cool room temperature, dry and ventilated, away from fire and heat sources.