Dynasylan® MTMS

Dynasylan® MTMS by Evonik is a methyltrimethoxysilane grade. It acts as a crosslinker. It is a colorless, low-viscosity liquid. It is regarded as trifunctional since all three alkoxy groups are able to hydrolyze. Additionally, it 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-). Condensation occurs parallel to hydrolysis once a certain amount of silanol groups have been formed. The absolute and relative rates of hydrolysis and condensation depend on a number of factors. The most important factors include pH, concentration, solvent, temperature and the catalyst. In some sol-gel applications it is partially hydrolyzed to form a pre-product that can be further crosslinked using temperature. This prehydrolysis often is done in conjunction with other organofunctional silanes (e.g. Dynasylan® GLYMO), silicic acid esters or even an aqueous silica sol. Listed with EINECS/ELINCS, AICS, DSL/NDSL, PICCS, TSCA, IECSC, ENCS, ECL and REACH. Dynasylan® MTMS has a minimum shelf life of 12 months.