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High hydroxyl functionality for excellent crosslink density with melamine and polyisocyanate curing agents.
Optimized molecular weight distribution for superior flow, leveling, and film formation.
Low viscosity in common organic solvents, enabling high-solids formulations without sacrificing application performance.
Excellent compatibility with nitrocellulose, polyester, and other acrylic resins in hybrid systems.
Consistent batch-to-batch reproducibility meeting stringent OEM automotive and industrial coating requirements.
OEM automotive topcoats (basecoat/clearcoat systems).
Automotive refinish clearcoats and solid-color basecoats.
Industrial maintenance coatings for metal substrates.
General-purpose coil coatings requiring durability and gloss retention.
High-performance plastic coatings for automotive interior and exterior trim.
| Chemical Type | Hydroxyl-functional acrylic copolymer |
| Product Form | Liquid resin solution |
| Appearance | Clear, pale yellow liquid |
| Solvent System | Butyl acetate / xylene blend |
| Non-Volatile Content (wt%) | 70 ± 1% |
| Hydroxyl Value (mg KOH/g) | 85–95 |
| Acid Value (mg KOH/g) | < 5 |
| Viscosity (DIN 4, 25°C) | 10–14 s |
Q1: What is the primary function of SETALUX 1262 BA-70 in coating formulations?
A: SETALUX 1262 BA-70 is a hydroxyl-functional acrylic resin designed as a reactive binder in two-component polyurethane (2K PU) and polyester-based crosslinking systems. It contributes to film formation, enhances hardness and chemical resistance, and supports excellent gloss retention and weatherability in high-performance topcoats.
Q2: Is SETALUX 1262 BA-70 compatible with common isocyanate crosslinkers?
A: Yes, it is specifically formulated for compatibility with aliphatic isocyanate crosslinkers—such as HDI-based trimer and biuret types—enabling robust curing at ambient or elevated temperatures. Compatibility testing under actual formulation conditions is recommended to optimize pot life and film properties.
Q3: How does SETALUX 1262 BA-70 perform in terms of viscosity and handling in solventborne systems?
A: It is supplied as a medium-viscosity solution in standard organic solvents, offering good flow characteristics and ease of incorporation into solventborne automotive refinish, industrial maintenance, and premium decorative coatings. Viscosity adjustment can be achieved with common thinners without compromising reactivity or film integrity.
Q4: Can SETALUX 1262 BA-70 be used in low-VOC or high-solids applications?
A: Yes—it is suitable for high-solids 2K PU systems targeting reduced VOC emissions, owing to its balanced molecular weight and functional group density. Formulators may adjust solids content and solvent selection to meet regional regulatory and performance targets while maintaining cure efficiency.
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