Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Evonik Dynasylan AR Hydrolyzed Polyethyl Silicate Coupling Agent

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

Features Of Evonik Dynasylan AR Hydrolyzed Polyethyl Silicate Coupling Agent

  1. Dual Functionality - Combines hydrolytic polyethyl silicate with colloidal silica for hybrid organic-inorganic bonding

  2. Process Efficiency - Pre-activated formula eliminates additional hydrolysis steps, enabling direct use in coatings/ceramics .

  3. Performance Boost - Enhances zinc particle dispersion (anti-settling >12 months) and ceramic mold precision (±0.1mm tolerance)

  4. Durability - Forms chemically resistant SiO₂-rich layers, withstanding acids/bases (pH 2–12) and high temps (up to 800°

Typical Applications Of Evonik Dynasylan AR Hydrolyzed Polyethyl Silicate Coupling Agent

  1. Marine Coatings - Zinc-rich primers for ship hulls/offshore platforms.

  2. Industrial Maintenance - Steel structure protection in chemical plants

  3. Automotive Undercoats - Anti-rust treatments for chassis/components

Specifications Of Evonik Dynasylan AR Hydrolyzed Polyethyl Silicate Coupling Agent

Chemical TypeHydrolytic polyethyl silicate + colloidal silica
AppearanceMilky white liquid
Solid Content≥40% SiO₂
Viscosity (25°C)15–25 cSt
Flash Point28°C (closed cup)



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