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High thermal stability up to 250 °C for extended service life in demanding environments.
Excellent electrical insulation properties, maintaining performance under high voltage and humidity.
Good compatibility with organic resins and pigments, enabling flexible formulation in hybrid systems.
Low volatile organic compound (VOC) content, supporting sustainable coating and encapsulation processes.
Self-crosslinking capability at elevated temperatures, eliminating the need for external catalysts.
Heat-resistant coatings for industrial exhaust systems and oven interiors.
Electrical insulation varnishes for motors, transformers, and magnet wire.
Binders in high-performance ceramic and refractory coatings.
Matrix resins for silicone-modified organic composites in aerospace and automotive components.
Encapsulants for LED modules requiring thermal management and UV resistance.
| Chemical Type | Methyl-phenyl silicone resin |
| Product Form | Clear to slightly hazy liquid |
| Appearance | Colorless to pale yellow, homogeneous liquid |
| Solvent Content | Xylene-based solution (~50 wt% solids) |
| Viscosity (25 °C, DIN 53019) | 80–120 mPa·s |
| Density (20 °C) | 0.94–0.97 g/cm³ |
| Primary Applications | Heat-resistant coatings, electrical insulation, high-temp binders |
| Key Features | Thermal stability, electrical insulation, self-crosslinking, VOC-compliant |
Q1: What is the primary function of SILRES REN 50 in coating and ink formulations?
A: SILRES REN 50 is a methyl-phenyl silicone resin designed to enhance surface properties—particularly improving slip, scratch resistance, and substrate wetting—without significantly affecting film transparency or gloss. It functions as a surface modifier and compatibilizer in solvent-based and high-solids systems.
Q2: Is SILRES REN 50 compatible with common organic resins such as acrylics, polyurethanes, and alkyds?
A: Yes, SILRES REN 50 exhibits good compatibility with a broad range of thermoplastic and thermosetting organic binders, including acrylics, polyurethanes, and alkyds. Its balanced methyl/phenyl ratio supports miscibility while minimizing phase separation under typical processing conditions.
Q3: How should SILRES REN 50 be incorporated into a formulation?
A: It is typically added during the let-down or post-additive stage using standard high-shear mixing. Pre-dilution in a compatible solvent (e.g., xylene, butyl acetate, or ethyl acetate) is recommended for uniform dispersion. Avoid prolonged high-temperature exposure prior to incorporation to preserve molecular integrity.
Q4: Does SILRES REN 50 contribute to crosslinking in thermoset systems?
A: No, SILRES REN 50 is a non-reactive, fully condensed silicone resin. It does not contain hydrolyzable groups (e.g., alkoxy or silanol) and therefore does not participate in covalent crosslinking reactions—it acts solely as a physical modifier.
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