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High hydroxyl functionality for excellent crosslink density with melamine and polyisocyanate curing agents.
Outstanding weathering resistance and UV stability, suitable for demanding exterior applications.
Low viscosity enables high-solids formulation without compromising flow and leveling performance.
Excellent compatibility with common solvent-borne acrylics, alkyds, and crosslinkers.
Consistent batch-to-batch reproducibility backed by Allnex’s stringent quality control protocols.
Automotive OEM clearcoats and basecoats requiring high gloss and durability.
Industrial maintenance coatings for metal substrates exposed to harsh environments.
Precision plastic coatings for electronics housings and automotive interior trim.
General-purpose high-performance coil coatings for architectural and appliance applications.
| Chemical Type | Hydroxyl-functional acrylic copolymer |
| Product Form | Liquid resin in organic solvent blend |
| Appearance | Clear, pale yellow liquid |
| Hydroxyl Value (mg KOH/g) | 85–95 |
| Acid Value (mg KOH/g) | < 5 |
| Non-Volatile Content (% w/w) | 55.0 ± 1.5 |
| Viscosity (DIN 4, 23°C, mPa·s) | 2,500–3,500 |
| Solvent System | Xylene / Butyl acetate / Ethanol mixture |
Q1: What is the primary function of SETALUX 57-1277 in coating formulations?
A: SETALUX 57-1277 is a hydroxyl-functional acrylic resin designed to serve as a reactive binder in two-component polyurethane and polyester-based coating systems. It contributes to film formation, crosslink density, and final cure performance while supporting excellent gloss, hardness, and chemical resistance.
Q2: Which types of curing agents are compatible with this resin?
A: SETALUX 57-1277 is formulated for use with aliphatic isocyanate crosslinkers, including HDI-based trimer and biuret types. It is not intended for aromatic isocyanates or non-isocyanate curing systems. Compatibility should always be verified experimentally under intended processing conditions.
Q3: Can this resin be used in high-solids or low-VOC coating systems?
A: Yes — SETALUX 57-1277 exhibits good solubility in common organic solvents and can be formulated into high-solids systems. Its molecular weight and functionality profile support reduced solvent demand without compromising flow, leveling, or crosslink efficiency.
Q4: How does SETALUX 57-1277 compare to other hydroxyl acrylic resins in terms of yellowing resistance?
A: As an aliphatic acrylic resin, SETALUX 57-1277 offers inherently superior UV stability and minimal yellowing upon exposure compared to aromatic or modified polyester alternatives, making it well-suited for exterior and light-stable topcoat applications.
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