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High-gloss, excellent flow and leveling for premium aesthetic finishes.
Outstanding weather resistance and UV stability for long-term outdoor performance.
Good chemical resistance to solvents, cleaning agents, and mild acids.
Optimized reactivity for efficient curing with standard triglycidyl isocyanurate (TGIC) hardeners.
Consistent batch-to-batch reproducibility meeting stringent industrial quality control standards.
Architectural aluminum extrusions for façades and curtain walls.
Outdoor furniture coatings requiring durability and color retention.
Automotive trim and non-under-hood decorative components.
Industrial appliances including refrigerators, washing machines, and HVAC enclosures.
General-purpose powder coatings for metal substrates in demanding environments.
| Chemical Type | Carboxyl-functional saturated polyester |
| Product Form | Off-white to light yellow granular solid |
| Appearance | Free-flowing granules, homogeneous particle size |
| Acid Value (mg KOH/g) | 34–38 |
| Gel Time (180 °C, seconds) | 80–110 |
| Melt Viscosity (200 °C, Pa·s) | 1,800–2,500 |
| Primary Applications | Standard TGIC-cured powder coatings for exterior use |
| Key Features | Weather resistance, gloss retention, mechanical toughness |
Q1: What is the primary application of CRYLCOAT 1648-2 in powder coatings?
A: CRYLCOAT 1648-2 is a carboxyl-functional polyester resin specifically designed for use in TGIC-free, high-gloss, and durable thermosetting powder coatings—particularly for indoor architectural and general industrial applications where excellent flow, leveling, and mechanical performance are required.
Q2: Is CRYLCOAT 1648-2 compatible with standard epoxy-based curing agents?
A: No—CRYLCOAT 1648-2 is formulated for use with hydroxyl-reactive crosslinkers such as β-hydroxyalkyl amides (HAA), not epoxy resins. It is optimized for HAA-cured systems and delivers balanced reactivity, storage stability, and film properties under typical powder coating cure schedules.
Q3: How does CRYLCOAT 1648-2 perform in terms of weather resistance and UV stability?
A: As a saturated polyester resin, CRYLCOAT 1648-2 offers good inherent resistance to UV degradation and chalking, making it suitable for interior applications and limited exterior exposure. For extended outdoor durability, formulation with appropriate UV absorbers and HALS stabilizers is recommended.
Q4: What are the key handling and storage recommendations for this resin?
A: Store in a cool, dry place below 30 °C, protected from moisture and direct sunlight. Keep containers tightly sealed to prevent humidity uptake, which may affect powder blend stability and electrostatic charging behavior during application.
Q5: Can CRYLCOAT 1648-2 be blended with other polyester resins to modify performance?
A: Yes—blending with complementary carboxyl-functional polyesters is common to fine-tune melt viscosity, gloss, flexibility, or chemical resistance. However, compatibility testing—including gel time, DSC analysis, and film evaluation—is strongly advised before full-scale production.
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E-mail: wangxingqiang@ericwchem.com
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
