Evonik Dynasylan AR is a hydrolytic polyethyl silicate coupling agent with colloidal silica, pre-activated with ethanol/sulfuric acid. Designed for single-step applications, it enhances adhesion in zinc-rich coatings (e.g., cathodic protection primers) and ceramic precision casting. Its rapid moisture-curing forms dense SiO₂ networks, improving corrosion resistance (>1,000h salt spray) and dimensional stability in refractory materials. Complies with REACH, suitable for industrial and marine coatings
Dual Functionality - Combines hydrolytic polyethyl silicate with colloidal silica for hybrid organic-inorganic bonding
Process Efficiency - Pre-activated formula eliminates additional hydrolysis steps, enabling direct use in coatings/ceramics .
Performance Boost - Enhances zinc particle dispersion (anti-settling >12 months) and ceramic mold precision (±0.1mm tolerance)
Durability - Forms chemically resistant SiO₂-rich layers, withstanding acids/bases (pH 2–12) and high temps (up to 800°
Marine Coatings - Zinc-rich primers for ship hulls/offshore platforms.
Industrial Maintenance - Steel structure protection in chemical plants
Automotive Undercoats - Anti-rust treatments for chassis/components
Chemical Type | Hydrolytic polyethyl silicate + colloidal silica |
Appearance | Milky white liquid |
Solid Content | ≥40% SiO₂ |
Viscosity (25°C) | 15–25 cSt |
Flash Point | 28°C (closed cup) |
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