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Automotive Filler & Putties
Automotive Refinish Coatings – Part II: Background, chemistry, and product recommendations for automotive refinish coatings in regarding to Filler & Putties.
Dynasylan® SIVO 160
Dynasylan® SIVO 160 is a water-borne sol-gel system which does not contain organic solvents. It does not release alcohols upon hydrolysis, contrary to standard functional alkoxysilanes. Dynasylan® SIVO 160 has a highly branched structure and contains a high concentration of active silanol groups. Therefore it can chemically bond to surfaces of suitable substrates and achieves a high degree of crosslinking by formation of 2- and 3- dimensional siloxane networks. Due to the high crosslinking density, an exceptional hardness can be achieved. On smooth surfaces, a layer thickness of more than 1 µm results in a brittle coating and should be avoided. On rough substrates thicker layers are possible without brittleness. If a higher layer thickness is necessary, formulations of Dynasylan® SIVO 160 with other sol-gel systems such as Dynasylan® SIVO 110, polymers, or polymer dispersions can be made.
Suitable substrates: stainless steel, HDG steel, Zn-galvanized steel, aluminum, magnesium, glass, ceramics.
The final curing temperature of Dynasylan® SIVO 160 depends on substrate and possibly the top-coat if the product is used as primer. In some cases Dynasylan® SIVO 160 based formulations can be dried at room temperature. In combination with a top-coat, a curing temperature of 60 to 80 °C is recommended for the final cure.
Product information
Type
Binder
Sub type
Silane
Markets
Technologies
Waterborne
Manufacturer
Availability
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