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Excellent chemical resistance to solvents, acids, and alkalis.
High gloss retention and superior weatherability in outdoor applications.
Low viscosity for easy formulation and improved flow/leveling in coating systems.
Good compatibility with melamine formaldehyde crosslinkers and common additives.
Consistent batch-to-batch performance ensured by strict quality control during polymerization.
Automotive OEM topcoats and refinish clearcoats.
Industrial coil coatings for pre-painted metal substrates.
High-performance appliance finishes requiring durability and aesthetics.
General-purpose decorative and protective coatings for metal furniture.
Electrodeposition primer topcoats and hybrid basecoat systems.
| Chemical Type | Saturated polyester resin |
| Product Form | Liquid, solvent-based |
| Appearance | Clear, pale yellow liquid |
| Non-Volatile Content (wt%) | 55–60% (at 120°C, 60 min) |
| Acid Value (mg KOH/g) | 8–12 |
| Hydroxyl Value (mg KOH/g) | 65–75 |
| Viscosity (mPa·s at 25°C) | 3,000–5,000 |
| Specific Gravity (25°C) | 1.08–1.12 |
Q1: What is the primary application of ETERKYD 5117 in coating systems?
A: ETERKYD 5117 is a saturated polyester resin designed primarily as a binder in high-performance thermosetting coil coatings and general industrial finishes, where excellent gloss retention, flexibility, and resistance to weathering and chemical exposure are required.
Q2: Which crosslinkers are commonly used with ETERKYD 5117?
A: It is typically formulated with melamine-formaldehyde resins or blocked isocyanates, depending on the desired cure schedule, film properties, and end-use performance requirements. Compatibility and reactivity should be verified during formulation development.
Q3: How does ETERKYD 5117 perform in terms of UV stability and outdoor durability?
A: As a saturated polyester, ETERKYD 5117 offers significantly improved UV resistance compared to unsaturated types, making it suitable for exterior applications where long-term gloss retention and minimal chalking are critical—especially when combined with appropriate UV absorbers and HALS stabilizers.
Q4: Is ETERKYD 5117 suitable for food-contact coating applications?
A: While ETERKYD 5117 is not inherently prohibited for food-contact use, its suitability depends entirely on the full formulated system—including crosslinker, catalyst, additives, and final cured film testing. End-users must conduct full regulatory evaluation and validation per applicable regional requirements before such use.
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E-mail: wangxingqiang@ericwchem.com
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