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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.
Excellent chemical resistance to solvents, acids, and alkaline cleaners.
Optimized reactivity for efficient curing with TGIC-free crosslinkers.
Low melt viscosity enabling smooth electrostatic powder coating application.
Architectural aluminum extrusions (e.g., window frames, curtain walls).
Automotive exterior trim and under-hood components.
Outdoor furniture and garden equipment coatings.
General industrial metal finishing requiring durable decorative finishes.
| Chemical Type | Carboxyl-functional saturated polyester |
| Product Form | Pale yellow to light amber solid flakes |
| Appearance | Free-flowing, homogeneous flakes |
| Acid Value (mg KOH/g) | 28–32 |
| Gardner Color | ≤ 3 |
| Melt Viscosity (200 °C, Pa·s) | 15–25 |
| Softening Point (°C, Ring & Ball) | 78–84 |
| Primary Applications | TGIC-free and HAA-based weather-resistant powder coatings |
Q1: What is the primary application of CRYLCOAT 1658-5 in powder coatings?
A: CRYLCOAT 1658-5 is a carboxyl-functional polyester resin designed for use as a binder in TGIC-free and TGIC-containing thermosetting powder coating systems, particularly where high gloss, excellent flow, and good mechanical properties are required in architectural and general industrial applications.
Q2: Is CRYLCOAT 1658-5 compatible with standard epoxy curing agents?
A: Yes — it is specifically formulated to react efficiently with common crosslinkers such as triglycidyl isocyanurate (TGIC), β-hydroxyalkyl amides (HAA), and glycidyl methacrylate (GMA)-functional acrylics, enabling robust cure profiles across a range of powder coating formulations.
Q3: How does CRYLCOAT 1658-5 perform under outdoor exposure conditions?
A: As a medium-to-high acid value polyester, it delivers strong UV resistance and long-term gloss retention when properly formulated and cured, making it suitable for exterior applications where weatherability and color stability are critical.
Q4: What handling precautions should be observed during processing?
A: Standard industrial hygiene practices apply: avoid inhalation of dust during handling, ensure adequate ventilation, and use appropriate personal protective equipment (PPE) such as gloves and safety glasses. The resin is non-hazardous in its solid form but may generate fine particulates during milling or blending.
Contact With Us:
E-mail: wangxingqiang@ericwchem.com
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
