EVONIK SILANES

Octyltriethoxysilane – Dynasylan OCTEO is a monomeric medium-chain alkylfunctional silane. Dynasylan OCTEO 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 OCTEO an easy-to-handle additive. During the hydrolysis reaction between water and Dynasylan OCTEO a certain amount of ethanol (VOC) is released.

Octyltrimethoxysilane – Dynasylan OCTMO is a monomeric medium-chain alkylfunctional silane. Dynasylan OCTMO 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 OCTMO an easy-to-handle additive. During the hydrolysis reaction between water and Dynasylan OCTMO a certain amount of methanol (VOC) is released.

Tetra-n-propylsilicate – Dynasylan P is a special silicic acid ester.

Propyltriethoxysilane – Dynasylan PTEO, an alkyltrialkoxysilane is important component in sol-gel systems. Dynasylan PTEO is a colourless, low-viscosity liquid. Dynasylan PTEO is regarded as trifunctional since all three alkoxy groups can hydrolyze. Additionally Dynasylan PTEO contains a propyl group that adds a hydrophobic character to the coatings. 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.

Propyltrimethoxysilane – Dynasylan PTMO, an alkyltrialkoxysilane is important component in sol-gel systems. Dynasylan PTMO is a colourless, low-viscosity liquid. Dynasylan PTMO is regarded as trifunctional since all three alkoxy groups can hydrolyze. Dynasylan PTMO also contains a propyl group that adds hydrophobic character to sol-gel coatings. 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.