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High hydroxyl functionality for excellent crosslink density with melamine and polyisocyanate curing agents.
Low viscosity enables high-solids formulation without sacrificing application performance or flow.
Superior UV resistance and gloss retention for demanding exterior coating applications.
Excellent compatibility with common solvent-based acrylics, alkyds, and polyester resins.
Consistent batch-to-batch reproducibility supported by Allnex’s stringent quality control protocols.
Automotive OEM clearcoats and basecoats requiring high durability and aesthetics.
Industrial maintenance coatings for metal substrates exposed to harsh environments.
General-purpose coil coatings where formability and weatherability are critical.
High-performance architectural coatings for aluminum composite panels (ACM) and extrusions.
| Chemical Type | Hydroxyl-functional acrylic copolymer |
| Product Form | Liquid resin in organic solvent |
| Appearance | Clear, colorless to pale yellow liquid |
| Hydroxyl Value (mg KOH/g) | 65–75 |
| Acid Value (mg KOH/g) | < 5 |
| Solids Content (% w/w) | 55 ± 2 |
| Viscosity (mPa·s, 25°C, DIN 4) | 3000–5000 |
| Primary Applications | OEM automotive, industrial maintenance, coil, and architectural coatings |
Q1: What is the primary function of SETALUX 27-1597 in coating formulations?
A: SETALUX 27-1597 is a hydroxyl-functional acrylic resin designed primarily 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 topcoats.
Q2: Which crosslinkers are typically compatible with this resin?
A: SETALUX 27-1597 is formulated for compatibility with common aliphatic isocyanate crosslinkers, including HDI-based trimer and biuret types. It may also be used with melamine-formaldehyde resins under appropriate catalysis and cure conditions, though performance optimization requires formulation-specific testing.
Q3: Is this resin suitable for low-VOC or high-solids applications?
A: Yes — SETALUX 27-1597 is supplied in solvent solution and is well-suited for high-solids 2K PU coatings. Its molecular design enables good flow and leveling at reduced solvent levels, supporting formulators aiming to meet evolving VOC regulations without compromising film integrity.
Q4: How should SETALUX 27-1597 be stored and handled?
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 ambient humidity during handling, as hydroxyl functionality may be sensitive to water in uncured systems. Refer to the Safety Data Sheet (SDS) for detailed occupational health and safety guidance.
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