EVONIK SILANES

Reactive organofunctional siloxane oligomer in water – Dynasylan HYDROSIL 2776 is a clear or slightly yellowish liquid.

Reactive organofunctional water-borne oligomeric silane – Dynasylan HYDROSIL 2907 is a slightly yellow to yellow liquid.

Reactive organofunctional siloxane oligomer in water – Dynasylan HYDROSIL 2926 is a colorless liquid.

Dynasylan IBTEO is a monomeric alkylfunctional silane. Dynasylan IBTEO is a clear colourless liquid and soluble in common non-polar organic solvents (e.g. petroleum ether, toluene). However its low volatility and viscosity make Dynasylan IBTEO an easy-to-handle additive. During the hydrolysis reaction between water and Dynasylan IBTEO a certain amount of ethanol (VOC) is released.

Isobutyltrimethoxysilane – Dynasylan IBTMO, an alkyltrialkoxysilane is an important surface modifier and component in sol-gel systems. Dynasylan IBTMO is a colourless, low-viscosity liquid. Dynasylan IBTMO is regarded as trifunctional since all three alkoxy groups are able to hydrolyze. Additionally Dynasylan IBTMO contains an isobutyl 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.