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High chemical resistance to solvents, acids, and alkalis in cured coatings.
Excellent weatherability and UV stability for long-term outdoor performance.
Low viscosity enabling high solids formulation with good flow and leveling.
Outstanding hardness and scratch resistance after crosslinking with melamine or isocyanate curing agents.
Good compatibility with common acrylics, epoxies, and reactive diluents for hybrid systems.
Powder coatings for architectural aluminum extrusions.
Industrial coil coatings requiring high durability and gloss retention.
Automotive OEM and refinish clearcoats and basecoat binders.
High-performance appliance coatings for refrigerators and washing machines.
General-purpose thermosetting decorative and protective coatings.
| Chemical Type | Saturated polyester resin |
| Product Form | Free-flowing solid pellets |
| Appearance | White to off-white granular solid |
| Acid Value (mg KOH/g) | 28–34 |
| Hydroxyl Value (mg KOH/g) | 160–175 |
| Gardner Color | ≤ 3 |
| Melt Point (°C) | 70–80 |
| Storage Stability | Stable under dry, cool conditions (≤ 25°C) for ≥ 12 months |
Q1: What is the primary application area for DYNAPOL S 1450?
A: DYNAPOL S 1450 is primarily designed for use in high-performance powder coatings, especially where excellent flow, leveling, and mechanical resistance are required—commonly in architectural, appliance, and general industrial coating systems.
Q2: How does DYNAPOL S 1450 differ from other saturated polyester resins in the DYNAPOL S series?
A: DYNAPOL S 1450 is formulated to offer a balanced combination of reactivity, melt viscosity, and film-forming performance—optimized for standard TGIC-free curing systems with HAA crosslinkers, while maintaining good storage stability and wide processing latitude in extrusion and grinding.
Q3: Is DYNAPOL S 1450 suitable for outdoor applications requiring UV resistance?
A: Yes—DYNAPOL S 1450 exhibits inherently good weatherability due to its saturated backbone and carefully selected monomer composition, making it well-suited for exterior-grade powder coatings when formulated with appropriate UV stabilizers and pigments.
Q4: What types of crosslinkers are compatible with DYNAPOL S 1450?
A: DYNAPOL S 1450 is specifically developed for use with hydroxyalkyl amide (HAA) crosslinkers, such as Primid XL-552. It can also be used with alternative low-TGIC or TGIC-free systems, though compatibility and cure response should be verified experimentally for each formulation.
Q5: How should DYNAPOL S 1450 be handled and stored to maintain optimal performance?
A: Store in original sealed packaging at temperatures below 30 °C, away from direct sunlight and moisture. Prolonged exposure to elevated temperature or humidity may affect flow behavior and extrusion consistency; therefore, controlled warehouse conditions and first-in/first-out inventory management are recommended.
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E-mail: wangxingqiang@ericwchem.com
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