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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 melt enabling efficient powder coating processing and smooth film formation.
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 and window frames.
Outdoor furniture and garden equipment coatings.
Automotive trim and non-under-hood exterior components.
Industrial metal furniture and shelving systems.
General-purpose decorative and protective powder coatings on steel and aluminum substrates.
| Chemical Type | Solid saturated polyester resin |
| Product Form | Free-flowing white to off-white granules |
| Appearance (as received) | Granular, homogeneous solid |
| Gardner Color (10% w/w in MIBK) | ≤ 3 |
| Acid Value (mg KOH/g) | 24–28 |
| Hydroxyl Value (mg KOH/g) | 16–20 |
| Melt Viscosity (180 °C, Pa·s) | 2.5–4.0 |
| Softening Point (°C, Ring & Ball) | 72–78 |
Q1: What is the primary application of DYNAPOL L952 in powder coating formulations?
A: DYNAPOL L952 is specifically designed as a solid saturated polyester resin for use as a binder in high-performance thermosetting powder coatings, particularly where excellent gloss retention, mechanical durability, and weather resistance are required.
Q2: Which curing agents is DYNAPOL L952 typically compatible with?
A: It is formulated to react efficiently with standard triglycidyl isocyanurate (TGIC) and hydroxyalkyl amide (HAA) crosslinkers, enabling flexible formulation options for both TGIC-containing and TGIC-free systems.
Q3: How does DYNAPOL L952 contribute to film formation and flow behavior in cured coatings?
A: Its well-balanced molecular weight distribution and low melt viscosity promote excellent melt flow and leveling during curing, supporting smooth, defect-free films with consistent surface appearance.
Q4: Is DYNAPOL L952 suitable for indoor or outdoor applications—or both?
A: Due to its saturated backbone and optimized structure, it delivers strong UV stability and long-term color retention, making it appropriate for demanding exterior architectural and industrial applications, as well as high-end interior finishes requiring exceptional aesthetics and durability.
Q5: What handling considerations apply to DYNAPOL L952 in powder coating production?
A: As a free-flowing solid resin, it exhibits good storage stability and compatibility with standard dry-blend and extrusion processes; however, optimal dispersion and homogeneity require careful control of mixing time, temperature, and extruder settings during compounding.
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E-mail: wangxingqiang@ericwchem.com
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