Home » Products » Organofunctional Silanes » Amino Silane » 3-(2-Aminoethylamino)propylmethyldiethoxysilane



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  • SCA-A20F

  • SCA-A20F

  • 70240-34-5

1.Product Introduction of the 3-(2-Aminoethylamino)propylmethyldiethoxysilane(CAS:70240-34-5)

3-(2-Aminoethylamino)propylmethyldiethoxysilane(CAS:70240-34-5), Our model SCA-A20F ,SCA-A20F is a diaminosilane. Its molecular structure has an active primary amino group and a secondary amino group and two hydrolyzable ethoxy groups. This dual reactivity allows it to pass through with inorganic materials (glass, metal, Filler) and organic polymer (thermosetting resin, plastic, elastomer) two-way chemical reaction to improve the bonding, adhesion and compatibility between the two, thereby improving the mechanical properties of the resin-based composite material or improving the resin coating Adhesive strength and water resistance. In different applications, it can be used as a coupling agent, adhesion promoter, curing agent, surface modifier of pigments and fillers, etc.

Because SCA-A20F is diethoxysilane, its stability in water is better than that of triethoxysilane SCA-A20E; at the same time, the crosslinking density of the cured and crosslinked resin coating is lower, and the coating toughness is better.

2. Product Parameter (Specification) of the 3-(2-Aminoethylamino)propylmethyldiethoxysilane(CAS:70240-34-5)




Colorless to yellowish, transparent liquid

Specific Gravity (ρ20), g/cm3


Boiling Point (760mmHg), ℃



Soluble in conventional aliphatic and aromatic solvents such as alcohol, ester, ether, benzene, etc., reacts with acetone and carbon tetrachloride; soluble in water, but hydrolyzed at the same time.

3.Application of the 3-(2-Aminoethylamino)propylmethyldiethoxysilane(CAS:70240-34-5):

1. It is used as raw material for amino silicone oil and various organic silicone super soft finishing agents. It is used for polycondensation with D4, DMC and other silicone monomers to synthesize amino silicone oil, improve the orientation of silicone (molecule) on the fiber, and increase The affinity for the fiber gives the fiber soft, smooth, drape, antistatic, washable, anti-wrinkle and other effects.

2. Used as an additive or formulated as a primer liquid for phenolic, urea-formaldehyde, furan, polyurethane, silicone, epoxy, nitrile, phenolic, acrylic and other coatings, inks, adhesives and sealants to improve the resin coating Adhesion, corrosion resistance, weather resistance, boiling resistance and scrub resistance, extend the service life, and improve the dispersion and binding of the pigment and filler in the resin phase.

3. Used in resin sand casting and resin abrasive tools to improve the binding force and water resistance of resin and silica sand or abrasive.

4.Packing Details of the 3-(2-Aminoethylamino)propylmethyldiethoxysilane(CAS:70240-34-5):

The regular packing of 3-(2-Aminoethylamino)propylmethyldiethoxysilane(CAS:70240-34-5) is 25kg plastic pail, 200L steel drums and 1000L immediate bulk container.

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5.Storage and Shelf Life of 3-(2-Aminoethylamino)propylmethyldiethoxysilane(CAS:70240-34-5):

Should be stored in dry, cool, ventilated room; keep away from water, moisture, high temperature and fire. This product has a shelf life of at least 12 months if stored in tightly closed original container at room temperature.

If this product is kept beyond the shelf life recommend on the product label, it is not necessarily unusable, but a quality control should be performed on the properties relevant to the application.

6. Deliver,Shipping And Serving of the 3-(2-Aminoethylamino)propylmethyldiethoxysilane(CAS:70240-34-5)

Based on the quantity of 3-(2-Aminoethylamino)propylmethyldiethoxysilane(CAS:70240-34-5), we can delivery you by sea, by air and by express.

7. Using method:

1. When processing mineral fillers, minerals can be blended with silane under high-speed shear without adding any solvent. After the silane treatment, the treated substrate or mineral surface should be briefly dried at 104-121°C to complete the polycondensation of silanol and remove a small amount of ethanol formed during the hydrolysis of ethoxysilane.

2. In the context of paints, coatings, adhesives, etc., this product or a mixture with other silanes can also be used as an additive, the amount of addition is 0.1 to 3.0% (weight percent) of the solid content of the formula. This product becomes an integral part of the coating, and thus disperses or migrates to the surface of the substrate. Can improve pigment dispersion, reduce pigment floatation, improve adhesion and paint film hardness.

3. When used as a primer, add this product dropwise to an alcohol aqueous solution containing 95% ethanol and 5% water while stirring. The silane concentration in the primer is generally 2.0 to 10%. You should wait for 6 hours to complete the hydrolysis and aging before use, but the aging solution should be used within 24 hours to avoid failure. You can also use alcohol solvents (such as ethanol, isopropanol, etc.) to directly dilute the product to a concentration of 2% and apply it to the substrate. If a dipping method is used to treat larger objects or powders, it should be dipped for at least 1 to 2 minutes to allow the silane to migrate to the surface of the material. Finally, the reaction is heated at a temperature of 110 to 130°C for 5 to 10 minutes, or at room temperature for 24 hours to complete the hydrolysis and condensation reactions.

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