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High hydroxyl functionality for robust crosslinking with melamine and polyisocyanate curing agents.
Excellent weatherability and UV resistance, supporting long-term gloss and color retention.
Good compatibility with common solvent-based coating systems including nitrocellulose and polyester resins.
Balanced molecular weight distribution for optimal flow, leveling, and film formation.
Low viscosity in standard aromatic solvents, enabling high-solids formulation flexibility.
Automotive OEM clearcoats and basecoats requiring high durability and appearance.
Industrial maintenance coatings for metal substrates exposed to outdoor environments.
General-purpose coil coatings where corrosion resistance and formability are critical.
High-performance wood finishes for furniture and architectural millwork.
Powder coating hybrid systems leveraging acrylic hydroxyl functionality for enhanced cure response.
| Chemical Type | Hydroxyl-functional acrylic copolymer |
| Product Form | Liquid resin solution |
| Appearance | Clear, pale yellow liquid |
| Solvent System | Aromatic hydrocarbons (e.g., xylene, Solvesso™ 100) |
| Non-Volatile Content (wt%) | 55 ± 2% |
| Hydroxyl Value (mg KOH/g) | 65–75 |
| Acid Value (mg KOH/g) | < 5 |
| Viscosity (25°C, mPa·s) | 4,000–6,000 (in 55% aromatic solution) |
Q1: What is the primary function of SETALUX 57-7205 in coating formulations?
A: SETALUX 57-7205 is a hydroxyl-functional acrylic resin designed to serve as a reactive binder in two-component polyurethane 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: Which crosslinkers is SETALUX 57-7205 typically compatible with?
A: This resin exhibits good reactivity with standard aliphatic isocyanate crosslinkers (e.g., HDI-based trimer or biuret types) and melamine-formaldehyde resins under appropriate curing conditions. Compatibility and cure profile should be verified experimentally for each specific formulation and application method.
Q3: Can SETALUX 57-7205 be used in low-VOC or solvent-reduced systems?
A: Yes — it is formulated to perform well in medium-solids solventborne systems and can be adapted to lower-VOC formulations through solvent selection and blending strategies. Its molecular design supports good flow, leveling, and compatibility with common co-solvents and reactive diluents.
Q4: How does SETALUX 57-7205 compare to other hydroxyl acrylic resins in terms of yellowing resistance?
A: As an aliphatic acrylic resin, SETALUX 57-7205 offers inherently low tendency toward UV-induced yellowing, making it suitable for applications where long-term color stability and clarity are critical — such as clearcoats for automotive refinish and premium industrial finishes.
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E-mail: wangxingqiang@ericwchem.com
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