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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 with TGIC-free curing systems for enhanced safety and compliance.
Consistent batch-to-batch reproducibility and low volatile organic content (VOC).
Architectural aluminum extrusions for curtain walls and window frames.
Coil coating of pre-painted metal for building panels and roofing.
Automotive trim and non-under-hood exterior components.
Outdoor furniture and garden equipment requiring durable finish integrity.
Consumer electronics enclosures demanding high visual quality and scratch resistance.
| Chemical Type | Carboxyl-functional saturated polyester |
| Product Form | Free-flowing white to off-white granular solid |
| Appearance | Granular, homogeneous particles |
| Acid Value (mg KOH/g) | 27–33 |
| Softening Point (°C, Ring & Ball) | 85–92 |
| Gardner Color | ≤ 3 |
| Moisture Content (wt %) | ≤ 0.3 |
| Primary Applications | TGIC-free and TGIC-containing powder coatings for architectural and industrial use |
Q1: What is the primary application of CRYLCOAT 1686-3 in powder coatings?
A: CRYLCOAT 1686-3 is a carboxyl-functional polyester resin designed for use in TGIC-free, high-gloss, weather-resistant thermosetting powder coatings—particularly for architectural and general industrial applications requiring excellent flow, leveling, and long-term UV stability.
Q2: Is CRYLCOAT 1686-3 compatible with standard epoxy curing agents?
A: No—CRYLCOAT 1686-3 is formulated for use with hydroxyalkylamide (HAA) crosslinkers, not epoxy resins. Its carboxyl functionality enables efficient reaction with HAA systems to deliver full cure at typical powder coating bake schedules (e.g., 180–200 °C for 10–20 minutes).
Q3: How does CRYLCOAT 1686-3 perform under accelerated weathering tests?
A: This resin delivers robust resistance to chalking, gloss loss, and color shift in QUV-A and Xenon arc exposure testing, supporting its suitability for exterior-grade powder coatings where long-term durability and aesthetic retention are critical.
Q4: Can CRYLCOAT 1686-3 be blended with other polyester resins to modify performance?
A: Yes—formulators may blend CRYLCOAT 1686-3 with complementary carboxyl-functional polyesters to fine-tune properties such as flexibility, cure speed, or surface appearance, provided compatibility and stoichiometric balance with the chosen crosslinker are verified during development.
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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
