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High chemical resistance to solvents, acids, and alkalis in cured coatings.
Excellent gloss retention and color stability under UV exposure.
Low viscosity for easy formulation and improved flow/leveling in coil and appliance coatings.
Good compatibility with melamine formaldehyde crosslinkers and standard additives.
Designed for high-bake curing systems (180–220 °C), delivering robust film integrity.
Coil coating topcoats for architectural and industrial metal substrates.
Prefinished appliance coatings for refrigerators, washing machines, and ovens.
General-purpose industrial maintenance coatings requiring durability and gloss.
High-performance exterior metal cladding and roofing systems.
Electrostatic powder coating base resin for functional and decorative finishes.
| Chemical Type | Saturated polyester resin |
| Product Form | Liquid, solvent-based |
| Appearance | Clear to pale yellow viscous liquid |
| Primary Applications | High-bake coil and appliance coatings |
| Key Features | High gloss, UV stability, chemical resistance |
| Recommended Crosslinker | High-methylol melamine formaldehyde resins |
| Curing Temperature Range | 180–220 °C |
| Storage Stability | ≥12 months at 25 °C in sealed containers |
Q1: What is the primary application of ETERKYD 50561-R-60 in coating systems?
A: ETERKYD 50561-R-60 is a high-performance saturated polyester resin designed primarily as a binder in thermosetting coil coatings and general-purpose industrial maintenance coatings, where excellent gloss retention, flexibility, and chemical resistance are required.
Q2: Which curing agents is this resin typically compatible with?
A: It is formulated for use with melamine-formaldehyde resins, particularly high-alkylated types, and may also be crosslinked with isocyanate-based hardeners in specific two-component systems—compatibility should always be verified through small-scale formulation trials.
Q3: How does ETERKYD 50561-R-60 perform under outdoor exposure conditions?
A: As a saturated polyester, it offers significantly improved UV stability and weather resistance compared to unsaturated counterparts, making it suitable for exterior applications where long-term gloss and color retention are critical—performance is further enhanced when combined with appropriate UV absorbers and HALS stabilizers.
Q4: Is this resin suitable for food-contact coating applications?
A: While the base resin itself is non-toxic and free of intentionally added heavy metals or bisphenol A, its suitability for food-contact use depends on the full formulation—including curing agent, additives, and final cured film properties—and must be validated against applicable regulatory requirements by the end-user formulator.
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