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Excellent chemical resistance to solvents, acids, and alkalis in cured coatings.
High gloss retention and superior color stability under UV exposure.
Low viscosity for easy formulation and excellent flow/leveling in high-solids coating systems.
Good compatibility with melamine formaldehyde crosslinkers and common additives.
Consistent batch-to-batch performance ensured by stringent Chang Chun quality control.
Automotive OEM and refinish topcoats requiring high durability and appearance.
Industrial maintenance coatings for metal furniture, appliances, and agricultural equipment.
General-purpose coil coatings for pre-painted steel used in construction and HVAC.
High-performance can coatings for food and beverage containers (non-internal contact).
| Chemical Type | Saturated polyester resin (melamine-curable) |
| Product Form | Liquid, solvent-based solution |
| Appearance | Clear, pale yellow to amber transparent liquid |
| Non-Volatile Content (NV%) | 74–76% (by weight, at 120°C, 60 min) |
| Acid Value | 8–12 mg KOH/g |
| Hydroxyl Value | 110–130 mg KOH/g |
| Viscosity (25°C, Brookfield RV-DVII+, spindle #3, 20 rpm) | 4,000–7,000 cP |
| Specific Gravity (25°C) | 1.08–1.12 g/cm³ |
Q1: What is the primary application of ETERKYD 5050-B-75 in coating systems?
A: ETERKYD 5050-B-75 is a saturated polyester resin specifically designed as a binder component in high-performance thermosetting powder coatings, particularly for architectural and industrial metal finishing applications requiring excellent gloss retention, mechanical durability, and weather resistance.
Q2: Is ETERKYD 5050-B-75 compatible with common crosslinkers used in polyester-based powder coatings?
A: Yes — it is formulated for compatibility with standard glycidyl-functional crosslinkers such as triglycidyl isocyanurate (TGIC) and hydroxyalkyl amide (HAA) curing agents, enabling flexible formulation options depending on regulatory and performance requirements.
Q3: How does ETERKYD 5050-B-75 contribute to film formation and flow characteristics in powder coatings?
A: Its balanced molecular weight distribution and controlled acid value support good melt viscosity, leveling, and edge coverage during curing — helping to achieve smooth, uniform films with minimal orange peel or pinholing under typical extrusion and curing conditions.
Q4: What are the recommended storage conditions to maintain product stability?
A: Store in a cool, dry, well-ventilated area away from direct sunlight and sources of heat or ignition. Keep containers tightly sealed to prevent moisture absorption and avoid prolonged exposure to elevated ambient temperatures, which may affect handling properties over time.
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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
