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High molecular weight structure delivering exceptional mechanical strength and toughness in cured coatings.
Fully saturated backbone ensuring outstanding UV stability and resistance to yellowing.
Excellent compatibility with melamine formaldehyde crosslinkers for high-performance thermoset systems.
Low volatile organic compound (VOC) content, supporting sustainable powder coating formulations.
Consistent melt viscosity and narrow molecular weight distribution for reliable extrusion and film formation.
Architectural metal coatings for façades, roofing, and cladding systems.
Appliance coatings for refrigerators, ovens, and washing machines.
Automotive exterior trim and under-hood components requiring long-term weather resistance.
General industrial powder coatings demanding high gloss retention and chemical resistance.
Outdoor furniture and garden equipment coatings exposed to harsh environmental conditions.
| Chemical Type | Saturated polyester resin (carboxyl-functional) |
| Product Form | Pale yellow to light amber solid granules |
| Appearance | Free-flowing granular solid |
| Acid Value (mg KOH/g) | 28–32 |
| Gardner Color (on 50% solution in MEK) | ≤ 3 |
| Melt Viscosity (at 200 °C, Pa·s) | 3,500–5,000 |
| Softening Point (°C, Ring & Ball) | 78–84 |
| Primary Applications | Powder coatings for architectural, appliance, and industrial use |
Q1: What are the primary application areas for DYNAPOL L411?
A: DYNAPOL L411 is primarily used as a high-performance binder and modifier in thermoset powder coatings—especially for architectural, industrial, and appliance finishes—where exceptional gloss retention, mechanical durability, and weather resistance are required.
Q2: How does DYNAPOL L411 differ from lower molecular weight saturated polyesters in powder coating formulations?
A: Its high molecular weight contributes to improved melt viscosity control, enhanced film formation, and superior resistance to sagging during curing—particularly beneficial in thick-film applications and vertical substrates. It also supports higher crosslink density when combined with standard TGIC or hydroxyalkylamide (HAA) curing agents.
Q3: Is DYNAPOL L411 compatible with common powder coating curing agents?
A: Yes—DYNAPOL L411 is fully compatible with conventional curing agents such as triglycidyl isocyanurate (TGIC) and hydroxyalkylamides (HAA), and is formulated to deliver balanced reactivity, storage stability, and final film performance across standard cure schedules (e.g., 180–200 °C for 10–20 minutes).
Q4: What handling and storage conditions are recommended for optimal shelf life?
A: Store in original sealed packaging in a cool, dry place below 30 °C and away from direct sunlight and moisture. Under these conditions, DYNAPOL L411 maintains stable physical properties and processing behavior for at least 12 months from the date of manufacture.
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E-mail: wangxingqiang@ericwchem.com
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