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High-gloss, excellent flow and leveling for smooth, defect-free coatings.
Outstanding weather resistance and UV stability for long-term outdoor performance.
Good chemical resistance to solvents, acids, and household cleaners.
Optimized reactivity for efficient curing with TGIC or HAA crosslinkers.
Low viscosity enabling high-solids formulations and improved application efficiency.
Exterior architectural powder coatings for aluminum extrusions and curtain walls.
Automotive trim and decorative components requiring durable finish integrity.
Outdoor furniture and garden equipment coatings exposed to harsh environmental conditions.
Industrial metal furniture and storage systems demanding aesthetic consistency and corrosion protection.
Consumer appliances with high-visibility front panels requiring gloss retention and color stability.
| Chemical Type | Carboxyl-functional saturated polyester resin |
| Product Form | Free-flowing white to off-white granules |
| Appearance | Granular solid, homogeneous particle size distribution |
| Acid Value (mg KOH/g) | 27–31 |
| Gardner Color | ≤ 2 |
| Softening Point (°C, Ring & Ball) | 70–76 |
| Melt Viscosity (Pa·s @ 200°C) | 4–6 |
| Primary Applications | High-performance exterior powder coatings |
Q1: What is the primary application of CRYLCOAT 2668-3 in powder coatings?
A: CRYLCOAT 2668-3 is a carboxyl-functional polyester resin specifically designed for use in TGIC-free, high-gloss, weather-resistant thermosetting powder coatings—particularly for architectural and industrial metal finishing applications where excellent UV stability and long-term color retention are required.
Q2: Which crosslinkers is CRYLCOAT 2668-3 typically formulated with?
A: This resin is optimized for use with hydroxyalkyl amide (HAA) crosslinkers, such as Primid XL-552, enabling robust cure performance at standard powder coating bake schedules (e.g., 180–200 °C for 10–20 minutes), while delivering balanced flexibility, hardness, and chemical resistance.
Q3: How does CRYLCOAT 2668-3 perform in terms of outdoor durability?
A: As a high-molecular-weight, semi-crystalline polyester, CRYLCOAT 2668-3 delivers enhanced resistance to chalking, gloss loss, and color shift under accelerated and natural weathering conditions—making it well-suited for exterior applications requiring extended service life in demanding climatic environments.
Q4: Is CRYLCOAT 2668-3 compatible with common powder coating additives?
A: Yes—it demonstrates good compatibility with standard powder coating additives including flow agents, degassing agents, benzoin alternatives, and texturing agents. However, additive selection and dosage should be validated within the full formulation to ensure optimal film appearance and mechanical properties.
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E-mail: wangxingqiang@ericwchem.com
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