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Highly crosslinkable solid saturated polyester resin with excellent compatibility in powder coating systems.
Outstanding weather resistance and UV stability for long-term outdoor performance.
Low melt viscosity enabling smooth film formation and excellent flow/leveling in cured coatings.
Good mechanical properties including hardness, flexibility, and impact resistance after curing.
Compatible with standard triglycidyl isocyanurate (TGIC) and hydroxyalkyl amide (HAA) curing agents.
Architectural aluminum extrusions for façades, windows, and curtain walls.
Automotive exterior trim and non-under-hood components.
Outdoor furniture and garden equipment requiring durable decorative finishes.
Industrial metal enclosures, lighting fixtures, and agricultural machinery.
White goods and consumer electronics housings demanding high gloss and color retention.
| Chemical Type | Solid saturated polyester resin |
| Product Form | Pale yellow to light amber granules or flakes |
| Appearance | Free-flowing solid at room temperature |
| Acid Value (mg KOH/g) | 24–28 |
| Hydroxyl Value (mg KOH/g) | 3–7 |
| Melt Viscosity (mPa·s at 180 °C) | 2,500–4,000 |
| Gardner Color (meq/100 g) | ≤ 3 |
| Softening Point (°C, Ring & Ball) | 78–84 |
Q1: What is the primary application area for DYNAPOL L651?
A: DYNAPOL L651 is primarily used as a binder resin in high-performance powder coatings for architectural, industrial, and appliance applications—especially where excellent weather resistance, gloss retention, and mechanical durability are required.
Q2: Is DYNAPOL L651 compatible with standard TGIC-free curing agents?
A: Yes, DYNAPOL L651 is specifically designed for use with common TGIC-free crosslinkers such as β-hydroxyalkyl amides (HAA), offering good reactivity, storage stability, and balanced flow-cure performance in powder formulations.
Q3: How does DYNAPOL L651 perform under UV exposure and outdoor weathering?
A: As a saturated polyester resin, DYNAPOL L651 delivers strong resistance to UV degradation and chalking, supporting long-term gloss and color stability in exterior powder coating systems—particularly when formulated with appropriate stabilizers and pigments.
Q4: What are the typical handling and storage recommendations?
A: Store in original sealed containers in a cool, dry place away from direct sunlight and sources of heat. Avoid prolonged exposure to humidity, as moisture absorption may affect powder flow and electrostatic charging behavior during 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
