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High hydroxyl functionality for excellent crosslinking density with melamine and polyisocyanate curing agents.
Low VOC formulation compliant with stringent environmental regulations including EU Directive 2004/42/EC.
Superior gloss retention and long-term weather resistance in outdoor coating applications.
Excellent compatibility with common acrylic and polyester resins, enabling versatile formulation flexibility.
Good flow and leveling characteristics for high-appearance industrial and automotive topcoats.
Automotive refinish clearcoats and basecoats.
Industrial maintenance coatings for metal substrates.
General-purpose coil coatings requiring durability and UV stability.
Plastic coatings for automotive interior trim and electronics housings.
High-performance architectural façade coatings.
| Chemical Type | Hydroxyl-functional acrylic copolymer |
| Product Form | Clear liquid |
| Appearance | Colorless to pale yellow, transparent |
| Solvent System | Water-reducible (aqueous dispersion stabilized with co-solvents) |
| Hydroxyl Value (mg KOH/g) | 85–95 |
| Non-Volatile Content (% w/w) | 35–38 |
| pH (10% aqueous solution) | 7.5–8.5 |
| Viscosity (DIN 4, 23°C) | 20–40 mPa·s |
Q1: What is the primary function of SETAQUA 6376 in waterborne coating systems?
A: SETAQUA 6376 serves as a hydroxyl-functional acrylic resin designed to act as a reactive binder in two-component (2K) waterborne polyurethane systems. It provides crosslinking sites for isocyanate curing agents, contributing to film formation, hardness development, and chemical resistance.
Q2: Is SETAQUA 6376 compatible with common waterborne polyisocyanate hardeners?
A: Yes, it is formulated for compatibility with standard aliphatic water-dispersible polyisocyanates, including HDI- and IPDI-based crosslinkers. Optimal performance is achieved when matched with hardeners recommended by Allnex technical guidelines and validated through formulation testing.
Q3: How does SETAQUA 6376 support low-VOC compliance in finished coatings?
A: As a waterborne resin with negligible organic solvent content, SETAQUA 6376 enables formulators to develop high-performance coatings that meet stringent regional VOC regulations—without compromising on cure speed or final film properties.
Q4: Can SETAQUA 6376 be used in ambient-cure applications?
A: Yes, it is suitable for ambient- and forced-dry curing conditions. Final film properties—including hardness build, flexibility, and resistance—depend on crosslinker selection, catalyst use, humidity control, and drying time, and should be verified under intended application conditions.
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E-mail: wangxingqiang@ericwchem.com
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