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High thermal stability up to 250 °C for extended service life in demanding environments.
Excellent weather resistance and UV stability, maintaining performance under prolonged outdoor exposure.
Good compatibility with organic resins and pigments, enabling flexible formulation in hybrid coating systems.
Low surface energy providing superior water repellency and anti-graffiti functionality.
Solvent-based liquid form with adjustable viscosity for optimized application by spray, dip, or roller methods.
High-performance silicone-modified acrylic and polyester coatings for architectural façades.
Water-repellent impregnation treatments for concrete, natural stone, and masonry substrates.
Heat-resistant topcoats for industrial metal components operating at elevated temperatures.
Anti-graffiti protective layers for public infrastructure and cultural heritage surfaces.
Weatherable binders in mineral-based plasters and renders for exterior building applications.
| Chemical Type | Methyl-phenyl silicone resin |
| Product Form | Liquid solution |
| Appearance | Clear, colorless to pale yellow liquid |
| Solvent | Xylene / aromatic hydrocarbon blend |
| Non-Volatile Content | ~70 wt% (at 150 °C, 60 min) |
| Viscosity (25 °C) | 80–120 mPa·s (Brookfield RV, spindle #3, 60 rpm) |
| Density (20 °C) | 0.94–0.97 g/cm³ |
| Flash Point (PMCC) | ≈45 °C |
Q1: What is the primary function of SILRES REN 70-M in coating formulations?
A: SILRES REN 70-M is a methyl-phenyl silicone resin designed to enhance weather resistance, thermal stability, and surface hardness in high-performance organic coatings—especially for metal and architectural applications where long-term durability under UV exposure and temperature fluctuations is critical.
Q2: Is SILRES REN 70-M compatible with common organic resins such as acrylics, alkyds, or polyesters?
A: Yes, SILRES REN 70-M exhibits good compatibility with many thermosetting and thermoplastic organic binders. It is typically incorporated via solvent blending or high-shear mixing, and compatibility should be verified empirically in the final formulation due to variations in polarity, molecular weight, and curing conditions.
Q3: How is SILRES REN 70-M typically supplied and handled?
A: SILRES REN 70-M is supplied as a clear to slightly hazy liquid in standard industrial packaging. It is stable under ambient storage conditions but should be protected from moisture and extreme temperatures. No special handling beyond standard industrial chemical safety practices is required.
Q4: Can SILRES REN 70-M contribute to improved scratch and abrasion resistance in cured films?
A: Yes—its rigid methyl-phenyl siloxane backbone imparts increased crosslink density and surface rigidity when co-cured with organic resins, leading to measurable improvements in scratch resistance, mar resistance, and mechanical robustness without significantly compromising flexibility.
Q5: What is the recommended dosage range for optimal performance?
A: Dosage depends on the base formulation and desired performance balance, but SILRES REN 70-M is generally effective at low concentrations—typically ranging from 0.1% to 2% by weight relative to total solids—and may be adjusted based on compatibility testing and target film properties.
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