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High-gloss, excellent flow and leveling for premium aesthetic finishes.
Outstanding weather resistance and UV stability for long-term outdoor performance.
Optimized reactivity with TGIC-free curing systems, supporting sustainable powder coating formulations.
Consistent batch-to-batch reproducibility ensuring reliable manufacturing scalability.
Low melt viscosity enabling efficient electrostatic application and high transfer efficiency.
Architectural aluminum extrusions for façades and curtain walls.
Automotive exterior trim components requiring durable decorative finishes.
Outdoor furniture and garden equipment exposed to harsh environmental conditions.
Heating, ventilation, and air conditioning (HVAC) enclosures and grilles.
Industrial metal office furniture and shelving systems.
| Chemical Type | Carboxyl-functional saturated polyester |
| Product Form | Pale yellow to light amber granules |
| Appearance | Free-flowing, homogeneous granular solid |
| Acid Value (mg KOH/g) | 28–32 |
| Gardner Color (50% w/w in MEK) | ≤ 2 |
| Melt Viscosity (180°C, Pa·s) | 3.5–4.5 |
| Softening Point (°C, ASTM E28) | 72–78 |
| Primary Applications | TGIC-free and HAA-cured architectural and industrial powder coatings |
Q1: What is the primary application of CRYLCOAT 2691-2 in powder coating formulations?
A: CRYLCOAT 2691-2 is a carboxyl-functional polyester resin specifically designed for use in TGIC-free, high-gloss, and durable thermosetting powder coatings—particularly suited for indoor architectural and general industrial applications where excellent flow, leveling, and mechanical performance are required.
Q2: Which curing agents is CRYLCOAT 2691-2 typically crosslinked with?
A: This resin is formulated to react efficiently with conventional epoxy-curing agents such as triglycidyl isocyanurate (TGIC) or alternative non-TGIC hardeners like β-hydroxyalkyl amides (HAA), depending on the desired performance profile and regulatory requirements of the end-use market.
Q3: How does CRYLCOAT 2691-2 contribute to film formation and appearance properties?
A: Due to its tailored molecular weight distribution and acid value, CRYLCOAT 2691-2 promotes excellent melt viscosity control during cure, resulting in superior flow, high gloss retention, and smooth surface aesthetics—especially in thick-film applications and complex substrate geometries.
Q4: Is CRYLCOAT 2691-2 suitable for outdoor exposure applications?
A: While it delivers good mechanical and chemical resistance, CRYLCOAT 2691-2 is primarily optimized for indoor or sheltered environments. For extended UV stability and weather resistance, Allnex recommends alternative resins from the CRYLCOAT portfolio specifically engineered for exterior durability.
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