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High chemical resistance to solvents, acids, and alkalis.
Excellent weathering stability and UV resistance for outdoor durability.
Low viscosity enabling easy formulation and high solids content in coatings.
Good compatibility with melamine-formaldehyde crosslinkers for thermoset systems.
Consistent batch-to-batch reproducibility meeting stringent industrial quality standards.
Automotive OEM and refinish topcoats.
Industrial coil coatings for pre-painted metal substrates.
General-purpose appliance and furniture coatings.
High-performance powder coating formulations.
UV-curable hybrid coating systems requiring polyester backbone functionality.
| Chemical Type | Saturated polyester resin |
| Product Form | Clear to pale yellow liquid |
| Appearance | Homogeneous, transparent liquid |
| Primary Applications | Thermosetting coatings (baked), powder coatings, coil coatings |
| Key Features | High crosslink density, low volatility, excellent film formation |
| Benefits | Enhanced hardness, gloss retention, and substrate adhesion |
| Storage Conditions | Store in cool, dry place; protect from direct sunlight and moisture |
Q1: What is the primary application of DYNAPOL EP112N in powder coating formulations?
A: DYNAPOL EP112N is a high-molecular-weight saturated polyester resin specifically designed as a binder component in thermosetting powder coatings, particularly for outdoor applications requiring excellent weather resistance, gloss retention, and mechanical durability.
Q2: Which curing agents is DYNAPOL EP112N typically crosslinked with?
A: This resin is formulated to react efficiently with standard triglycidyl isocyanurate (TGIC) and hydroxyalkyl amide (HAA) type curing agents, offering flexibility in formulating both TGIC-containing and TGIC-free systems without compromising cure response or final film properties.
Q3: How does DYNAPOL EP112N contribute to the flow and leveling behavior of powder coatings?
A: Its well-balanced molecular weight distribution and low melt viscosity promote good melt flow and surface leveling during curing, supporting uniform film formation and minimizing orange peel—especially important for high-gloss and smooth architectural finishes.
Q4: Is DYNAPOL EP112N suitable for food-contact compliant powder coatings?
A: While DYNAPOL EP112N itself is not inherently food-contact certified, it may be incorporated into powder coating systems that are engineered to meet relevant food-contact regulations—subject to full system validation, including choice of curing agent, additives, and final cured film testing.
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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
