Dynasylan® 9165
Phenyltrimethoxysilane
Dynasylan® 9165, a phenylfunctional silane modifies the surface of inorganic materials, and is an important component in sol-gel systems.
Description
Dynasylan® 9165 is a colourless, low-viscosity liquid. Dynasylan® 9165 is regarded as trifunctional since all three alkoxy groups can hydrolyze. Dynasylan® 9165 also contains a phenyl group that exhibits excellent thermal stability and brings flexibility to sol-gel coating systems.
Hydrolysis of Dynasylan® 9165 leads to silanol groups that, in a subsequent condensation reaction, form very stable siloxane (-Si-O-Si-) bonds. Condensation occurs parallel to hydrolysis once a certain amount of silanol groups have formed. The silanol groups can also react with –OH groups on inorganic surfaces. The absolute and relative rates of hydrolysis and condensation depend on a number of factors: e.g. pH, concentration, solvent, temperature and identity of the catalyst. Hydrolysis in dilute aqueous solutions, under addition of a hydrolysis catalyst rapidly yields two layers. Partial hydrolysis is also possible and results in storage stable formulations. Dynasylan® 9165 reacts faster with water than Dynasylan® 9265.
Safety & Handling
Before considering the use of Dynasylan® products please read its Safety Data sheet (SDS) thoroughly for safety and toxicological data as well as for information on proper transportation, storage and use. The Safety Data Sheet is available after registration on our website www.dynasylan.com or upon request from your local representative, customer service or from Evonik Resource Efficiency GmbH, Product Safety Department, E-MAIL sds-hu@evonik.com.
Packaging and Storage
Dynasylan® 9165 is available in 25 kg and 200 kg drums.
When kept away from moisture, the shelf life of Dynasylan® 9165 in the original closed container is min. 6 months from delivery.