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Silanes are bifunctional molecules carrying an anchor group that reacts with OH functions on the surface of substrates
(e. g. mineral substrates, glass and metals). A second function determines the property of the silane.


Silanes with alkyl groups are used as hydrophobing agents. The length of the alkyl chain determines the degree of hydrophobicity. The most commonly used silane is N-octyltriethoxysilane (NOTES), but others with other alkyl chains are also available.

Adhesion Promotion

Silanes with amino functions, epoxy functions or double bonds are used as adhesion promoter. The silane reacts with the hydroxy functions of the substrate, the other group is available for reaction with the binder or adhesive. This chemically fixes the binder or adhesive to the surface.

Sol-gel coating

Tetraethoxysilane (TEOS) and methyltriethoxysilane are used in sol-gel coatings. These give a hard coating on metallic surfaces.

Do you need more information?

Would you like to learn more about the different silanes and their possibilities? Then feel free to contact us!

Your contact person


Simone Jöhnk
Performance Chemicals

Phone: +49 40 77173 2528

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