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High thermal stability up to 250 °C continuous service temperature.
Excellent weather resistance and UV stability for long-term outdoor performance.
Good compatibility with organic resins including acrylics, polyesters, and alkyds.
Low surface energy enabling superior water repellency and anti-graffiti properties.
Solvent-based formulation (xylene/toluene blend) optimized for industrial coating systems.
High-performance silicone-modified architectural coatings for façades and cladding.
Heat-resistant topcoats for industrial equipment and exhaust systems.
Weatherable clear coats for metal substrates in transportation and building applications.
Water-repellent additives for protective masonry and concrete sealers.
Hybrid resin component in premium-grade coil coatings requiring durability and gloss retention.
| Chemical Type | Methyl/phenyl silicone resin |
| Product Form | Liquid concentrate |
| Appearance | Clear, colorless to pale yellow liquid |
| Solvent System | Xylene/toluene mixture |
| Non-Volatile Content | ~60 wt% (at 150 °C, 60 min) |
| Viscosity (25 °C) | Approx. 40–60 mPa·s (Brookfield DV-II+ at spindle #3, 60 rpm) |
| Density (20 °C) | ~0.92–0.94 g/cm³ |
| Flash Point (PMCC) | ~35 °C |
Q1: What is the primary function of SILRES MQ 803 TF in coating and ink formulations?
A: SILRES MQ 803 TF functions as a reactive silicone resin modifier that enhances surface properties—such as slip, mar resistance, and substrate wetting—while maintaining compatibility with organic polymer systems. It co-reacts or physically integrates into the binder matrix, delivering durable, low-surface-energy effects without significant migration.
Q2: Is SILRES MQ 803 TF suitable for use in water-based systems?
A: Yes—it is specifically designed for good dispersibility and stability in aqueous dispersions and emulsions. While not fully water-soluble, it can be effectively incorporated using standard high-shear mixing or with the aid of compatible surfactants or co-solvents, depending on the formulation pH and ionic environment.
Q3: How does SILRES MQ 803 TF differ from standard MQ silicone resins?
A: SILRES MQ 803 TF features a tailored molecular architecture with optimized M:Q ratio and controlled functionalization, resulting in improved compatibility with acrylics, polyurethanes, and alkyds. Its “TF” designation indicates enhanced thermal stability and reduced volatility during film formation, making it especially suited for high-bake and UV-curable applications.
Q4: Can SILRES MQ 803 TF be used in food-contact coatings?
A: SILRES MQ 803 TF is not pre-approved for direct food-contact applications under major regulatory frameworks. Its suitability depends on final formulation testing and compliance evaluation by the end-user—particularly regarding extractables, migration behavior, and intended contact conditions. Wacker recommends consulting regulatory experts before use in such applications.
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