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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 (e.g., acrylics, alkyds) enabling hybrid formulation development.
Low surface energy providing inherent water repellency and anti-graffiti functionality.
Solvent-based liquid form with adjustable viscosity for flexible processing and application methods.
High-performance architectural coatings for façades and concrete protection.
Heat-resistant coatings for industrial equipment and exhaust systems.
Water-repellent impregnation treatments for natural stone and masonry.
Hybrid binders in silicone-modified paints and topcoats.
Functional additives in fire-protection and intumescent coating systems.
| Chemical Type | Methyl-phenyl silicone resin |
| Product Form | Liquid, solvent-based |
| Appearance | Clear, colorless to pale yellow liquid |
| Solvent | Xylene / aromatic hydrocarbon mixture |
| Non-Volatile Content | Approx. 50 wt % |
| Viscosity (23 °C) | Approx. 100–200 mPa·s |
| Density (20 °C) | Approx. 0.92–0.96 g/cm³ |
| Flash Point (PMCC) | Approx. 40 °C |
Q1: What is the primary function of SILRES SY 300 in coating and ink formulations?
A: SILRES SY 300 is a methyl-phenyl silicone resin designed to enhance surface properties—particularly improving scratch resistance, mar resistance, and water repellency—without significantly compromising substrate adhesion or film flexibility.
Q2: Is SILRES SY 300 compatible with common organic resin systems such as acrylics, polyurethanes, and alkyds?
A: Yes, SILRES SY 300 exhibits good compatibility with many thermoplastic and thermosetting organic binders when properly dispersed or pre-diluted. Compatibility should be verified experimentally for each specific formulation due to variations in polarity, molecular weight, and solvent composition.
Q3: How is SILRES SY 300 typically incorporated into a formulation?
A: It is commonly added during the let-down stage as a solution in aromatic or ketonic solvents. Pre-dilution helps ensure uniform dispersion. Direct addition to water-based systems is not recommended without prior emulsification or use of suitable co-solvents and surfactants.
Q4: Does SILRES SY 300 contribute to thermal stability in cured films?
A: Yes—the phenyl groups in its structure provide enhanced thermal and oxidative stability compared to purely methyl-based silicones, making it suitable for applications requiring moderate heat resistance, such as industrial maintenance coatings or baking finishes.
Q5: Can SILRES SY 300 be used in low-VOC or high-solids formulations?
A: Yes—it can be formulated into medium-to-high solids systems and supports VOC reduction strategies when used with appropriate low-boiling solvents or reactive diluents. Its non-volatile nature contributes to efficient solids build without excessive solvent demand.
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E-mail: wangxingqiang@ericwchem.com
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