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High-gloss, durable finish with excellent flow and leveling characteristics.
Optimized for TGIC-free powder coating systems, supporting sustainable formulation strategies.
Superior weather resistance and UV stability for long-term outdoor performance.
Excellent mechanical properties including impact resistance and flexibility (mandrel bend ≤ 2 mm).
Consistent batch-to-batch reproducibility and broad curing window (180–200 °C, 10–20 min).
Architectural aluminum extrusions for façades and curtain walls.
Outdoor furniture and garden equipment requiring corrosion and fade resistance.
Agricultural and construction machinery components exposed to harsh environments.
Residential and commercial fencing, railings, and lighting fixtures.
| Chemical Type | Carboxyl-functional saturated polyester |
| Product Form | Pale yellow to light amber solid granules |
| Appearance | Free-flowing, uniform granules |
| Acid Value (mg KOH/g) | 27–31 |
| Number Average Molecular Weight (Mn) | ~2,800–3,200 g/mol |
| Glass Transition Temperature (Tg, DSC, °C) | 68–72 |
| Softening Point (Ring & Ball, °C) | 75–80 |
| Primary Applications | TGIC-free exterior-grade powder coatings |
Q1: What is the primary application of CRYLCOAT 4641-0 in powder coatings?
A: CRYLCOAT 4641-0 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 requiring excellent UV stability and long-term color retention.
Q2: Which curing agents is CRYLCOAT 4641-0 typically crosslinked with?
A: This resin is formulated to react efficiently with standard epoxy-functional curing agents such as glycidyl ether-based hardeners (e.g., Araldite PT810 or equivalent), enabling robust film formation without TGIC. Compatibility with alternative non-halogenated crosslinkers should be verified through lab-scale formulation trials.
Q3: How does CRYLCOAT 4641-0 perform under accelerated weathering conditions?
A: As a high-performance polyester, it delivers strong resistance to chalking, gloss loss, and color shift during QUV and xenon-arc exposure testing—making it suitable for exterior applications where long-term durability and aesthetic consistency are critical.
Q4: Is CRYLCOAT 4641-0 suitable for low-cure or energy-efficient powder coating processes?
A: While optimized for standard cure schedules (e.g., 180–200 °C for 10–20 minutes), its reactivity profile supports potential adaptation to lower-temperature curing upon formulation adjustment—including selection of complementary catalysts and hardeners—but full performance validation is required for each specific process condition.
Q5: What handling and storage precautions should be observed?
A: Store in a cool, dry place below 30 °C in original sealed packaging to prevent moisture uptake and premature agglomeration. Avoid prolonged exposure to high humidity or temperature fluctuations during storage and handling, as these may affect flow behavior and electrostatic charging in powder application.
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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
