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Excellent weather resistance and UV stability for long-term outdoor performance.
High gloss retention and superior color consistency after accelerated aging.
Low viscosity enabling easy processing and excellent flow/leveling in coil and can coatings.
Good chemical resistance to solvents, weak acids, and alkalis in finished film applications.
Designed for high-solids formulations, supporting reduced VOC emissions without compromising film integrity.
Coil coatings for architectural and industrial metal substrates.
Pretreated steel and aluminum can coatings for food and beverage packaging.
General-purpose industrial maintenance coatings requiring durability and gloss.
Topcoats for pre-finished metal building products (e.g., roofing, cladding).
Hybrid systems combined with acrylics or melamine crosslinkers for enhanced performance.
| Chemical Type | Saturated polyester resin |
| Product Form | Liquid, solvent-based |
| Appearance | Clear, pale yellow liquid |
| Primary Applications | Coil coatings, can coatings, industrial topcoats |
| Key Features | High gloss, UV resistance, low viscosity, high solids compatibility |
| Benefits | Enhanced durability, improved application efficiency, reduced VOC potential |
| Crosslinking System | Compatible with melamine-formaldehyde resins |
| Storage Stability | Stable under recommended conditions (cool, dry, sealed container) |
Q1: What is the primary function of DYNAPOL S 1427 in powder coating formulations?
A: DYNAPOL S 1427 serves as a reactive co-resin that enhances crosslink density, improves mechanical properties such as scratch resistance and flexibility, and supports smooth film formation—particularly in hybrid and polyester-epoxy systems.
Q2: Is DYNAPOL S 1427 compatible with standard epoxy curing agents?
A: Yes, it is specifically designed for compatibility with glycidyl-functional epoxy resins and common epoxy-based hardeners used in hybrid powder coatings, enabling balanced reactivity and storage stability.
Q3: How does DYNAPOL S 1427 influence the curing behavior of powder coatings?
A: It contributes to a well-controlled cure profile with good flow and leveling, supporting typical industrial curing schedules (e.g., 180–200 °C for 10–20 minutes) without excessive sensitivity to overbake conditions.
Q4: Can DYNAPOL S 1427 be used in food-contact compliant powder coatings?
A: While DYNAPOL S 1427 is formulated for high-purity applications and meets Evonik’s internal quality standards for low extractables, final regulatory compliance depends on the complete formulation, processing conditions, and applicable regional requirements—formulators must validate suitability for specific food-contact uses.
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E-mail: wangxingqiang@ericwchem.com
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