Evonik

Dynasylan MTES

Methyltriethoxysilane

Dynasylan MTES, an alkyltrialkoxysilane, is an important component in sol-gel systems.

In some sol-gel applications Dynasylan MTES is partially hydrolyzed to form a preproduct that can be further crosslinked using temperature.

Key Features

Dynasylan MTES is a colorless, low-viscosity liquid. Use requires acid- or alkali-catalysed hydrolysis. Dynasylan MTES is regarded as trifunctional since all three alkoxy groups are able to participate in this reaction.

Additionally Dynasylan MTES contains a methyl group that adds organic character to the products. Hydrolysis leads to silanol groups which, in a subsequent condensation reaction, form very stable siloxane bonds (-Si-O-Si-). 

Recommended Applications

In some sol-gel applications Dynasylan MTES is partially hydrolyzed to form a preproduct that can be further crosslinked using temperature. This prehydrolysis is often done in conjunction with other organofunctional silanes, silicic acid esters (e.g. Dynasylan A) or even a aqueous silica sol.