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High hydroxyl functionality for robust crosslinking with melamine and polyisocyanate curing agents.
Excellent weather resistance and UV stability, suitable for demanding exterior coatings.
Good compatibility with common solvent-based resin systems and pigments.
Balanced molecular weight distribution ensuring optimal flow, leveling, and film formation.
Low volatile organic compound (VOC) content when formulated in compliant coating systems.
Automotive OEM and refinish topcoats requiring high gloss and durability.
Industrial maintenance coatings for metal substrates exposed to harsh environments.
Powder coating hybrid systems where acrylic backbone enhances flexibility and adhesion.
General-purpose high-performance solventborne decorative and protective coatings.
Coil coating primers and topcoats for architectural and appliance applications.
| Chemical Type | Hydroxyl-functional acrylic copolymer |
| Product Form | Liquid resin in aromatic and aliphatic hydrocarbon solvents |
| Appearance | Clear, pale yellow liquid |
| Hydroxyl Value (mg KOH/g) | 75–85 |
| Acid Value (mg KOH/g) | < 5 |
| Solids Content (% by weight) | 55 ± 2 |
| Viscosity (DIN 4mm, 23°C, mPa·s) | 2,500–4,500 |
| Primary Applications | 2K polyurethane, melamine-cured, and hybrid industrial coatings |
Q1: What is the primary function of SETALUX 1200 XX-55 in coating formulations?
A: SETALUX 1200 XX-55 serves as a hydroxyl-functional acrylic resin designed to act as a reactive binder in two-component polyurethane and polyester-based crosslinking systems. It contributes to film formation, hardness development, and long-term durability while maintaining excellent gloss and color stability.
Q2: Is SETALUX 1200 XX-55 compatible with common isocyanate crosslinkers?
A: Yes — it is formulated for compatibility with standard aliphatic isocyanate crosslinkers, including HDI-based trimer and biuret types. Optimal performance is achieved when used with low-viscosity, non-yellowing hardeners suitable for high-performance industrial and automotive topcoats.
Q3: How does SETALUX 1200 XX-55 perform in terms of weather resistance and UV stability?
A: As a purely acrylic hydroxyl resin with no aromatic backbone, it delivers inherently strong resistance to UV degradation, chalking, and gloss loss. It is widely selected for exterior applications requiring long-term gloss retention and minimal color shift under accelerated and natural weathering conditions.
Q4: Can SETALUX 1200 XX-55 be blended with other resins to modify film properties?
A: Yes — it exhibits good miscibility with many common acrylics, polyesters, and melamine-formaldehyde resins. Blending allows formulators to fine-tune flexibility, cure speed, chemical resistance, or substrate adhesion without compromising overall crosslink density or clarity.
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