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.
Dynasylan® OCTEO silane can be used as a surface modifier to generate hydrophobicity on inorganic fillers and pigments, e.g. titandioxide. The medium-chain alkyl functionality results in unique compound properties when Dynasylan® OCTEO treated minerals or pigments are incorporated into polymers, e.g. polyethylene or polypropylene. Loading levels of 0.5 to 1.5wt.% Dynasylan® OCTEO based on the weight of filler or pigment are typically recommended.