High hydroxyl functionality for excellent crosslink density with melamine and polyisocyanate curing agents.
Optimized molecular weight distribution delivering superior flow, leveling, and gloss retention.
Low volatile organic compound (VOC) content, supporting compliant high-solids coating formulations.
Excellent compatibility with common acrylic, polyester, and cellulose ester resins in hybrid systems.
Good hydrolytic stability and storage life under recommended conditions (unopened, cool, dry).
Automotive OEM clearcoats and basecoats requiring high durability and UV resistance.
Industrial maintenance coatings for metal substrates, including agricultural and construction equipment.
General-purpose high-performance coil coatings for pre-painted metal applications.
Refinish clearcoats where rapid cure, hardness development, and chemical resistance are critical.
Plastic coatings for automotive interior and exterior trim components.
| Chemical Type | Hydroxyl-functional acrylic copolymer |
| Product Form | Liquid resin solution |
| Appearance | Clear, pale yellow liquid |
| Hydroxyl Value (mg KOH/g) | 115–125 |
| Acid Value (mg KOH/g) | < 5 |
| Solids Content (% by weight) | 60 ± 2 (in xylene/butyl acetate blend) |
| Viscosity (mPa·s, 25°C) | 4,000–6,000 (Brookfield RV, spindle #3, 20 rpm) |
| Density (g/cm³, 25°C) | 0.98–1.02 |
Q1: What is the primary function of SETALUX D A HS 1170 BA in coating formulations?
A: SETALUX D A HS 1170 BA is a hydroxyl-functional acrylic resin designed as a reactive binder in two-component polyurethane (2K PU) and other crosslinking systems. It contributes to film formation, enhances hardness and chemical resistance, and supports excellent gloss retention and weatherability in high-performance industrial and automotive topcoats.
Q2: Is this resin compatible with common isocyanate crosslinkers used in 2K PU systems?
A: Yes, SETALUX D A HS 1170 BA is formulated for compatibility with standard aliphatic isocyanate crosslinkers, including HDI-based trimer and biuret types. Its hydroxyl functionality and molecular architecture are optimized to ensure good reactivity, pot life stability, and balanced cure kinetics under typical ambient or forced-dry conditions.
Q3: How does SETALUX D A HS 1170 BA support performance in high-solids coating applications?
A: This resin features a relatively low viscosity combined with high solids content, enabling formulators to achieve target application viscosities with reduced solvent demand. Its molecular design helps maintain flow and leveling while supporting robust film integrity and mechanical properties even at elevated non-volatile levels.
Q4: Can it be used in both clearcoat and pigmented basecoat systems?
A: Yes — SETALUX D A HS 1170 BA is widely employed in high-gloss clearcoats due to its clarity, UV stability, and compatibility with light stabilizers. It also performs well in pigmented basecoats where good pigment wetting, dispersion stability, and intercoat adhesion are required.
Q5: What are key 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 heat sources. Avoid prolonged exposure to moisture or strong oxidizing agents. Prior to use, inspect for signs of gelling or phase separation; if observed, consult Allnex technical support before incorporation into formulations.
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