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Low-VOC, waterborne formulation compliant with global environmental regulations including EPA and EU REACH.
Excellent hydrolytic stability enabling extended shelf life and consistent performance in aqueous coating systems.
Superior film-forming capability with balanced hardness and flexibility for durable, impact-resistant finishes.
Enhanced compatibility with acrylic emulsions, aminoplast crosslinkers, and common waterborne additives.
Optimized rheology profile for stable dispersion and smooth application via spray, dip, or electrodeposition processes.
Automotive OEM and refinish primers and topcoats.
Industrial maintenance coatings for metal structures and equipment.
Architectural metal cladding and façade protection systems.
General-purpose protective coatings for agricultural and construction machinery.
Waterborne coil coatings requiring good corrosion resistance and gloss retention.
| Chemical Type | Water-reducible alkyd resin (modified with hydrophilic groups) |
| Product Form | Opaque white to off-white aqueous dispersion |
| Appearance | Homogeneous liquid, free of gel particles or phase separation |
| Solids Content (wt%) | 42 ± 2% |
| pH (25°C) | 7.8 – 8.4 |
| Viscosity (Brookfield, LVT, #2 spindle, 20 rpm, 25°C) | 1,200 – 1,800 cP |
| Density (25°C) | 1.02 – 1.05 g/cm³ |
| Primary Applications | Electrodeposition (e-coat), waterborne industrial primers & topcoats |
Q1: What is the primary function of ECOAT UR3840 in waterborne coating systems?
A: ECOAT UR3840 functions as a reactive film-forming binder that enhances gloss retention, hardness development, and substrate adhesion in ambient-cure or low-bake waterborne industrial coatings—particularly in electrodeposition (e-coat) and hybrid alkyd-acrylic systems.
Q2: Is ECOAT UR3840 compatible with common co-binders and crosslinkers used in waterborne formulations?
A: Yes—it demonstrates good compatibility with acrylic emulsions, polyurethane dispersions (PUDs), and melamine formaldehyde or blocked isocyanate crosslinkers. Compatibility testing under specific formulation conditions (pH, ionic strength, shear history) is recommended prior to full-scale implementation.
Q3: How does ECOAT UR3840 contribute to corrosion protection in e-coat applications?
A: As a hydrophobic, oxidatively curing alkyd component in waterborne e-coat matrices, it improves resin matrix integrity and interfacial cohesion at the metal–coating interface, supporting long-term barrier performance—especially when formulated with appropriate pigments and inhibitors.
Q4: What are the recommended storage and handling conditions for ECOAT UR3840?
A: Store in original sealed containers at temperatures between 5 °C and 30 °C, away from direct sunlight and freezing conditions. Avoid prolonged exposure to high humidity during handling, and ensure adequate ventilation when transferring or mixing due to its low-VOC, waterborne nature.
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E-mail: wangxingqiang@ericwchem.com
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