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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, weak acids, and alkaline cleaners.
Optimized reactivity with triglycidyl isocyanurate (TGIC) and hydroxyalkyl amide (HAA) curing agents.
Consistent batch-to-batch quality with narrow acid value and viscosity distribution.
Architectural aluminum extrusions for curtain walls and window frames.
Automotive trim and under-hood components requiring durable decorative finishes.
Outdoor furniture and garden equipment with high aesthetic and durability demands.
Consumer electronics enclosures requiring scratch resistance and gloss retention.
| Chemical Type | Carboxyl-functional saturated polyester |
| Product Form | Free-flowing granular solid |
| Appearance | White to off-white granules |
| Acid Value (mg KOH/g) | 27–31 |
| Gardner Color | ≤ 2 |
| Melt Viscosity (Pa·s, 180 °C) | 3.5–4.5 |
| Softening Point (°C, Ring & Ball) | 78–84 |
| Moisture Content (wt %) | ≤ 0.2 |
Q1: What is the primary application of CRYLCOAT 1551-6 in powder coating systems?
A: CRYLCOAT 1551-6 is a carboxyl-functional polyester resin specifically designed as a binder component in TGIC-free, high-gloss, weather-resistant thermosetting powder coatings—commonly used for architectural aluminum extrusions and outdoor metal furniture.
Q2: Is CRYLCOAT 1551-6 compatible with common curing agents used in TGIC-free systems?
A: Yes, it is formulated for optimal reactivity with standard TGIC-free crosslinkers such as β-hydroxyalkyl amides (HAA) and certain blocked isocyanates, delivering balanced gel time, flow, and mechanical performance in cured films.
Q3: How does CRYLCOAT 1551-6 contribute to weather resistance in finished coatings?
A: Its molecular structure provides excellent hydrolytic stability and UV resistance, supporting long-term gloss retention and minimal chalking when formulated with appropriate pigments and stabilizers for exterior exposure.
Q4: What are typical handling and storage recommendations for this resin?
A: Store in original sealed containers in a cool, dry, well-ventilated area away from direct sunlight and sources of heat or ignition. Avoid prolonged exposure to humidity to prevent agglomeration or premature reactivity.
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E-mail: wangxingqiang@ericwchem.com
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