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High hydroxyl functionality for robust crosslinking with isocyanates and melamine resins.
Excellent compatibility with common solvent-based coating systems including polyurethanes and alkyds.
Good pigment wetting and dispersion stability in high-solids, low-VOC formulations.
Superior weather resistance and UV stability for long-term exterior durability.
Balanced molecular weight distribution ensuring optimal flow, leveling, and film formation.
Automotive OEM and refinish topcoats.
Industrial maintenance coatings for metal substrates.
Architectural high-performance façade and cladding coatings.
Plastic coatings requiring flexibility and adhesion on ABS and PC substrates.
Coil coatings for pre-painted steel and aluminum sheets.
| Chemical Type | Hydroxyl-functional acrylic copolymer |
| Product Form | Liquid resin solution |
| Appearance | Clear to slightly hazy, pale yellow liquid |
| Solvent System | Xylene / butyl acetate blend |
| Solids Content (wt%) | 60 ± 1% |
| Hydroxyl Value (mg KOH/g) | 85–95 |
| Acid Value (mg KOH/g) | < 5 |
| Viscosity (mPa·s, 25°C) | 4,000–6,000 |
Q1: What is the primary function of Setalux 1276 SS-60 in coating formulations?
A: Setalux 1276 SS-60 serves as a hydroxyl-functional acrylic resin designed to act as a reactive binder in two-component polyurethane and polyester-based systems, contributing to crosslink density, film hardness, and chemical resistance.
Q2: Is this resin compatible with common isocyanate hardeners used in industrial coatings?
A: Yes, Setalux 1276 SS-60 is formulated for compatibility with aliphatic and aromatic isocyanate crosslinkers, including HDI trimer and IPDI-based hardeners, and is commonly used in high-performance automotive refinish and industrial maintenance coatings.
Q3: How does the SS-60 designation relate to its physical form and handling?
A: The “SS-60” suffix indicates it is supplied as a solvent-based solution containing approximately 60% non-volatile content, typically in a blend of aromatic and oxygenated solvents—optimized for viscosity control and ease of incorporation into conventional coating manufacturing processes.
Q4: Can this resin be used in low-VOC or high-solids coating systems?
A: While Setalux 1276 SS-60 is a solvent-borne product, its relatively high solids content supports formulation strategies aimed at reducing overall VOC levels. It may serve as a building block in high-solids PU systems when balanced with appropriate solvent selection and resin blending.
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