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High hydroxyl functionality for excellent crosslink density with melamine and polyisocyanate curing agents.
Optimized molecular weight distribution for balanced flow, leveling, and film hardness development.
Low viscosity in common organic solvents, enabling high-solids formulation flexibility and reduced VOC emissions.
Superior weatherability and UV resistance, supporting long-term gloss and color retention in exterior coatings.
Good compatibility with other acrylics, alkyds, and cellulose esters for hybrid resin systems.
Automotive OEM and refinish topcoats requiring high-gloss, chip resistance, and durability.
Industrial maintenance coatings for metal substrates exposed to harsh environmental conditions.
General-purpose coil coatings for pre-painted steel and aluminum building products.
High-performance wood finishes for architectural millwork and furniture demanding clarity and hardness.
Plastic coatings for automotive interior trim and consumer electronics housings.
| Chemical Type | Hydroxyl-functional acrylic copolymer |
| Product Form | Liquid solution in xylene and/or aromatic hydrocarbon blend |
| Appearance | Clear, pale yellow liquid |
| Hydroxyl Value (mg KOH/g) | 65–75 |
| Acid Value (mg KOH/g) | < 5 |
| Solids Content (% by weight) | 55–60 |
| Viscosity (mPa·s at 25°C, DIN ISO 2535) | 4,000–6,000 |
| Specific Gravity (25°C) | 0.98–1.02 |
Q1: What is the primary function of SETALUX 27-1590 in coating formulations?
A: SETALUX 27-1590 serves as a hydroxyl-functional acrylic resin designed to act as a reactive binder in two-component polyurethane and polyester-based systems. It contributes to film formation, hardness development, and chemical resistance while supporting excellent gloss retention and UV stability.
Q2: Is SETALUX 27-1590 compatible with common isocyanate crosslinkers?
A: Yes, it is formulated for compatibility with standard aliphatic isocyanate crosslinkers—including HDI trimer and biuret types—enabling robust cure performance in high-performance industrial and automotive topcoats. Compatibility and pot life should be verified under actual formulation conditions.
Q3: How does SETALUX 27-1590 perform in terms of weathering and UV resistance?
A: As a purely acrylic hydroxyl resin with no aromatic content, it delivers inherently strong resistance to UV degradation and chalking, making it well-suited for exterior applications where long-term gloss retention and color stability are critical.
Q4: Can SETALUX 27-1590 be used in low-VOC or high-solids coating systems?
A: Yes, it is suitable for medium-to-high solids formulations and can support VOC-reduced systems when paired with appropriate solvents and crosslinkers. Its molecular design balances viscosity control with reactivity, facilitating efficient formulation without excessive solvent demand.
Q5: What are typical handling and storage recommendations for this resin?
A: Store in tightly sealed containers in a cool, dry, and well-ventilated area away from direct sunlight and ignition sources. Avoid prolonged exposure to moisture or strong oxidizing agents. Always consult the Safety Data Sheet (SDS) before handling or processing.
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