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High chemical resistance to solvents, acids, and alkalis.
Excellent thermal stability and long-term durability in demanding environments.
Low viscosity at processing temperatures, enabling easy handling and efficient mixing.
Outstanding adhesion to metal substrates without requiring primers.
Non-yellowing performance under UV exposure and elevated temperature conditions.
Coil coating systems for pre-painted metal used in building facades and roofing.
Can coatings for food and beverage containers requiring FDA-compliant formulations.
High-performance industrial maintenance coatings for corrosion protection.
Electrical insulation varnishes for motor and transformer winding applications.
Powder coating binders for architectural aluminum profiles and appliance finishes.
| Chemical Type | Saturated polyester resin |
| Product Form | Free-flowing solid granules |
| Appearance | White to off-white granular solid |
| Acid Value (mg KOH/g) | 20–30 |
| Hydroxyl Value (mg KOH/g) | 15–25 |
| Melt Viscosity (mPa·s at 200 °C) | 2,500–4,500 |
| Gardner Color (on 50% solution in xylene) | ≤ 3 |
| Moisture Content (wt. %) | ≤ 0.2 |
Q1: What is the primary application area for DYNAPOL L411?
A: DYNAPOL L411 is primarily used as a binder resin in high-performance powder coatings for architectural, industrial, and appliance applications—especially where excellent gloss retention, mechanical durability, and weather resistance are required.
Q2: Is DYNAPOL L411 compatible with standard TGIC-free curing agents?
A: Yes, it 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 formulated powders.
Q3: How does DYNAPOL L411 contribute to film formation and surface appearance?
A: Its well-balanced molecular weight distribution and low melt viscosity support uniform film formation, resulting in smooth surfaces with high gloss, minimal orange peel, and excellent edge coverage—even at moderate cure schedules.
Q4: What handling precautions should be observed during processing?
A: As a solid thermoplastic polyester, DYNAPOL L411 should be stored in a cool, dry environment and protected from moisture and excessive heat. During extrusion or blending, standard thermal stability guidelines for saturated polyesters apply—avoid prolonged exposure above its softening range to prevent premature agglomeration.
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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
