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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 UV resistance for durable exterior architectural and industrial coatings.
Excellent compatibility with common solventborne acrylics, alkyds, and polyester resins.
Optimized molecular weight distribution for balanced flow, leveling, and film hardness development.
Automotive refinish topcoats (basecoat/clearcoat systems).
Industrial maintenance coatings for metal substrates.
Architectural high-performance façade and roof coatings.
General-purpose coil coatings requiring weatherability and flexibility.
| Chemical Type | Hydroxyl-functional acrylic copolymer |
| Product Form | Solventborne liquid resin |
| Appearance | Clear to slightly hazy, colorless to pale yellow liquid |
| Primary Applications | Crosslinkable binder for thermosetting coatings |
| Key Features | High OH value, low viscosity, good solubility in aromatic and ketonic solvents |
| Benefits | Enables high-gloss, chip-resistant films with enhanced chemical and weather resistance |
| Recommended Cure System | Melamine formaldehyde resins or aliphatic polyisocyanates |
| Storage Stability | Stable for ≥12 months at 20–25°C in sealed containers |
Q1: What is the primary function of SETALUX 1797 SS-70 in coating formulations?
A: SETALUX 1797 SS-70 is a hydroxyl-functional acrylic resin designed to serve as a reactive binder in two-component polyurethane and polyester-based systems. It contributes to film formation, crosslink density, and enhances hardness, chemical resistance, and gloss retention in high-performance industrial and automotive topcoats.
Q2: Is SETALUX 1797 SS-70 compatible with common isocyanate hardeners?
A: Yes — it is formulated for compatibility with standard aliphatic and aromatic isocyanate crosslinkers, including HDI-based trimer and biuret types. Optimal performance is achieved when matched with low-viscosity, non-yellowing hardeners in solventborne and high-solids PU systems.
Q3: How does SETALUX 1797 SS-70 support high-solids or low-VOC formulation goals?
A: With its relatively low solution viscosity and high solids content, this resin enables formulators to reduce solvent demand while maintaining good flow, leveling, and pot life. It is commonly selected for high-solids 2K PU coatings targeting VOC compliance without sacrificing application properties or final film performance.
Q4: Can SETALUX 1797 SS-70 be used in waterborne systems?
A: No — it is specifically designed for solventborne and high-solids systems. It is not inherently water-dispersible or emulsifiable. For waterborne applications, Allnex offers dedicated hydroxyl-acrylic dispersions from the SETALUX W series.
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