Dynasylan® SIVO 112

Dynasylan® SIVO 112 should be metered into Dynasylan® SIVO 110 under constant stirring. Mixing procedure should commence at room temperature. Upon formulation of Dynasylan® SIVO 110 with Dynasylan® SIVO 112 the final application is recommended within 24h. Dynasylan® SIVO 112 - modified Dynasylan® SIVO 110 can be processed as usual (see product information of Dynasylan® SIVO 110 for further details). For „easy-to-clean“ applications the following mixture is recommended: 50 wt.-% of Dynasylan® SIVO 110 50 wt.-% of Dynasylan® SIVO 112. Approx. 0.1-0.2 wt.-% of Tego Dispers 745W should be added as processing agent. Dynasylan® SIVO 112 – modified coatings based on Dynasylan® SIVO 110 exhibit an improved weathering resistance. Upon 500 h of QUVA-irradiation visible optical changes such as cracks or delamination can occur on surfaces covered with a Dynasylan® SIVO 110 - coating. On the contrary Dynasylan® SIVO 112 – modifiied coatings remain significantly more resistant. Hence almost no visible changes can be found upon 1000 h QUVA-irradiation.

Dynasylan® SIVO 112 ist a water-borne, organofunctional silane system which exhibits hydro- and oleophobic properties. It can be mixed with Dynasylan® SIVO 110 in any proportion. Hydro- and oleophobicity of the coating can be custom-tailored depending on the dosage. On smooth surfaces a static contact angle (deionized water) of approx. 110 °C can be established. Dynasylan® SIVO 112 is an oligomeric siloxane with contains reactive silanol groups. Due to the high degree of silanol functions it is possible to chemically crosslink with Dynasylan® SIVO 110 during condensation. As of such the hydro-/ oleophobic additive is implanted into the matrix of the sol-gel coating. Dynasylan® SIVO 112 is a low viscous liquid and can be easily mixed with Dynasylan® SIVO 110. During formulation no positive mixing enthalpy is observed. Nevertheless, care should be taken to avoid any temperature peaks or other accompanying, unwanted effects in combination with other components during the final ready-for-use coating system. Observance of test formulations at a smaller scale is thus recommended. Basic mixtures of Dynasylan® SIVO 110 with Dynasylan® SIVO 112 should be applied within approx. 24 h.

The shelf life of Dynasylan® SIVO 110 is shortened upon addition of Dynasylan® SIVO 112. As of such in general two-component systems are preferably formulated. Dynasylan® SIVO 112 allows for the formulation of weather-resistant* sol-gel coatings which additionally exhibit, easy-to-clean“ properties. 

• * In this context „weather-resistant“ is defined as follows: > 1000 h of stability against QUVA-irradiation (practically non-visible change of optical surface properties). Test conditions: 8h time cycle (4h UV-A 340 irradiation, peak of emission at 340 nm, intensity of irradiation at the substrate’s surface: 0,92W/m² at 340 nm), Temp. 55 °C, 3h 55 min condensation at 45 °C, 5 min water spray.

Due to its water content Dynasylan® SIVO 112 must be stored above freezing temperature. Storage temperatures must not exceed +40 °C. In original sealed containers Dynasylan® SIVO 112 has a shelf life of min. 12 months from delivery.