Modified Phenyl Silicone Resins
Silico® Modified Phenyl Silicone Resins are high-performance resins with reactive groups like hydroxyl, methoxy, or epoxy. They offer great heat and weather resistance, strong gloss retention, and good compatibility with other resins. Ideal for high-temp coatings, industrial paints, adhesives, powder coatings, and UV-resistant systems.
Product Overview
Silico® Modified Phenyl Silicone Resins are high-performance organosilicon resins designed by introducing reactive functional groups (e.g., hydroxyl, methoxy, epoxy, ethoxy) into phenyl silicone frameworks. These resins offer excellent compatibility with organic resins, superior thermal stability, weather resistance, and gloss retention. They are widely used in:
High-temperature resistant coatings
Industrial maintenance paints
Powder coatings and composite resins
Adhesives and sealant systems
UV and weather-resistant formulations
Phenyl modification provides enhanced resistance to oxidation, discoloration, and degradation, while reactive end groups enable chemical bonding with other resin systems such as acrylic, epoxy, alkyd, and polyester.
Typical Technical Data
| Property | Silico® PH Series Range | Remarks |
|---|---|---|
| Appearance | Colorless to light yellow transparent liquid or solid flakes | Depends on grade |
| Solid Content | 50 – 100% | Solvent-free or solvent-based |
| Viscosity @ 25°C | 60 – 150 mm²/s (solution) | Solvent: xylene, MIBK, toluene |
| Density @ 25°C | 1.14 – 1.28 g/cm³ | High specific gravity, low VOC |
| Refractive Index | 1.507 – 1.530 | Good optical clarity |
| Functional Group Content | Hydroxyl: 3–6% / Methoxy: 10–18% / Epoxy: available | Enhances reactivity |
| Volatile Content (105–250 °C) | ≤ 3–5% | Thermally stable, low outgassing |
| Softening Point (for solid grades) | ~40 °C | Easy to incorporate into melt systems |
Key Applications
High-Temperature Industrial Coatings
Forms heat-resistant films (up to 650 °C) when used with aluminum pigments or other fillers. Suitable for chimneys, stoves, engine parts, etc.Maintenance & Anti-Corrosion Paints
Enhances acrylic, alkyd, or polyester resins for longer outdoor durability and gloss retention.Powder & UV Curable Coatings
Improves flow, leveling, weather resistance, and compatibility in solvent-free formulations.Adhesive and Sealant Formulation
Reacts with epoxy or hydroxyl resins to improve mechanical strength, thermal stability, and solvent resistance.Composite & Resin Reinforcement
Used as resin modifiers in FRP, laminates, and engineering plastics to enhance dimensional and chemical stability.
Product Advantages
Outstanding Thermal Resistance
Sustains performance at elevated temperatures (up to 650 °C), ideal for heat-resistant coatings.Superior Weathering and UV Durability
Phenyl groups ensure long-term gloss, color retention, and protection against photooxidation.Enhanced Resin Compatibility
Functionalized Silico® resins react or blend seamlessly with acrylics, polyesters, epoxies, and alkyds.Customizable Functionality
Available with hydroxyl, methoxy, epoxy, or ethoxy groups to meet specific curing or processing needs.Low VOC & Environmentally Friendly
Solvent-free or low-volatile formulations support compliance with global environmental standards.
Recommended Silico® Grades
| Grade | Form | Functional Group | Applications |
|---|---|---|---|
| Silico® PH‑OH 710 | Transparent liquid | Hydroxyl | Clear high-temp coatings, primers |
| Silico® PH‑MeO 720 | Transparent liquid | Methoxy | Maintenance paints, architectural coatings |
| Silico® PH‑Epoxy 730 | Liquid or flakes | Epoxy | Composite resins, adhesives |
| Silico® PH‑FLK 750 | Solid flakes | No functional group | Powder coatings, high-temp resins |
- Customized grades with specific viscosity, solid content, or reactivity are available upon request.
Processing Recommendations
Curing Options:
Heat cure at 180–250 °C depending on functionality
UV or catalyst-assisted reaction with other resins (e.g., amino or epoxy resins)
Blending & Compatibility:
Compatible with MIBK, toluene, xylene, and powder coating matrices
Add 5–30% by weight into conventional resin systems for performance enhancement
Packaging & Storage
Packaging Options: 25 kg PE drum, 200 kg steel drum, 1,000 kg IBC tote
Shelf Life: 12 months when stored in a cool, dry place away from direct sunlight
Handling Notes: Avoid exposure to moisture and reactive catalysts to prevent premature crosslinking
Why Choose Silico®?
Silico® delivers highly engineered phenyl-modified silicone resins tailored to meet the demands of high-performance coating and adhesive systems. With customizable functionality, superior durability, and global support, Silico® is the trusted solution for formulators seeking long-term reliability under thermal and environmental stress.
Jessica G.
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