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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 for TGIC-free curing systems, supporting sustainable powder coating formulations.
Consistent batch-to-batch reproducibility and broad processing window in extrusion and curing.
Architectural aluminum extrusions for façades and curtain walls.
Outdoor furniture and garden equipment requiring durable decorative finishes.
Automotive exterior trim and non-under-hood components.
Consumer appliances including refrigerators, washing machines, and outdoor grills.
Lighting fixtures and street furniture exposed to harsh environmental conditions.
| Chemical Type | Carboxyl-functional aromatic-aliphatic polyester |
| Product Form | Free-flowing granular solid |
| Appearance | Off-white to light yellow granules |
| Acid Value (mg KOH/g) | 27–31 |
| Gardner Color (on 50% solution in MEK) | ≤ 3 |
| Softening Point (°C, Ring & Ball) | 68–74 |
| Primary Applications | Standard and super-durable TGIC-free powder coatings |
| Key Features | High gloss, weather resistance, TGIC-free compatibility |
Q1: What is the primary application of CRYLCOAT 2628-3 in powder coating systems?
A: CRYLCOAT 2628-3 is a carboxyl-functional polyester resin specifically designed for use in TGIC-free, high-gloss, exterior-grade thermosetting powder coatings—particularly where excellent weather resistance, gloss retention, and mechanical durability are required.
Q2: Which curing agents is CRYLCOAT 2628-3 typically crosslinked with?
A: This resin is formulated to react efficiently with standard epoxy-functional hardeners, including glycidyl ester-based co-reactants such as Primid XL-552 or similar alternative curing agents compatible with carboxyl-terminated polyesters in TGIC-free systems.
Q3: How does CRYLCOAT 2628-3 perform under UV exposure and humid conditions?
A: As part of Allnex’s exterior-grade polyester portfolio, CRYLCOAT 2628-3 delivers robust resistance to UV degradation and moisture-induced chalking or gloss loss, making it suitable for long-term architectural and industrial applications exposed to harsh outdoor environments.
Q4: Is CRYLCOAT 2628-3 compatible with common powder coating additives?
A: Yes—it demonstrates good compatibility with standard flow modifiers, degassing agents, benzoin alternatives, and texturing agents used in polyester-based powder formulations. Compatibility testing under actual processing conditions is recommended to optimize performance.
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E-mail: wangxingqiang@ericwchem.com
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