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High-gloss, excellent flow and leveling for premium surface aesthetics.
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 TGIC-free crosslinkers in powder coatings.
Consistent batch-to-batch reproducibility supporting reliable industrial production.
Architectural aluminum extrusions (e.g., window frames, curtain walls).
Automotive exterior trim and under-hood components.
Outdoor furniture and garden equipment coatings.
Electrical enclosures and industrial metal housings.
| Chemical Type | Carboxyl-functional saturated polyester |
| Product Form | Pale yellow to light amber granules |
| Appearance | Free-flowing, homogeneous granules |
| Acid Value (mg KOH/g) | 28–32 |
| Molecular Weight (Mn) | ~2,800–3,200 g/mol |
| Glass Transition Temperature (Tg) | 68–72 °C |
| Primary Applications | TGIC-free and HAA-cured powder coatings for exterior use |
| Key Features | High gloss, weather durability, smooth film formation |
Q1: What is the primary application of CRYLCOAT 2645-3 in powder coatings?
A: CRYLCOAT 2645-3 is a carboxyl-functional polyester resin specifically designed for use in TGIC-free, high-gloss, decorative powder coating systems—particularly where excellent flow, leveling, and long-term weather resistance are required.
Q2: Is CRYLCOAT 2645-3 compatible with standard epoxy-based curing agents?
A: No—CRYLCOAT 2645-3 is formulated for use with alternative crosslinkers such as β-hydroxyalkyl amides (HAA), not epoxy resins. Its carboxyl functionality and molecular design are optimized for HAA-cured systems to achieve balanced reactivity and storage stability.
Q3: How does CRYLCOAT 2645-3 contribute to outdoor durability in powder coatings?
A: This resin delivers enhanced UV stability and hydrolytic resistance due to its saturated backbone and carefully controlled acid value, supporting superior gloss retention and chalking resistance in exterior architectural and industrial applications.
Q4: What handling precautions should be observed during processing?
A: As with most thermoplastic polyester resins, CRYLCOAT 2645-3 should be stored in a cool, dry environment and protected from moisture prior to use. Avoid prolonged exposure to elevated temperatures during extrusion to prevent premature viscosity changes or gel formation.
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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
