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High hydroxyl functionality for excellent crosslinking efficiency with melamine and polyisocyanate curing agents.
Optimized molecular weight distribution to deliver balanced flow, leveling, and film hardness.
Low viscosity in solvent-based systems, enabling high-solids formulations without sacrificing application performance.
Superior UV resistance and long-term gloss retention in outdoor coating applications.
Consistent batch-to-batch reproducibility meeting stringent Allnex quality control standards.
Automotive OEM clearcoats and basecoats requiring high durability and aesthetic finish.
Industrial maintenance coatings for metal substrates exposed to harsh environmental conditions.
General-purpose coil coatings demanding excellent formability and corrosion resistance.
High-performance wood finishes where clarity, hardness, and chemical resistance are critical.
Plastic coatings for automotive interior and exterior trim components.
| Chemical Type | Hydroxyl-functional acrylic copolymer |
| Product Form | Liquid resin solution |
| Appearance | Clear, pale yellow liquid |
| Solvent System | Xylene / butyl acetate blend |
| Solids Content (wt%) | 60 ± 1% |
| Hydroxyl Value (mg KOH/g) | 95 – 105 |
| Acid Value (mg KOH/g) | < 5 |
| Viscosity (mPa·s, 25°C) | 3,000 – 5,000 |
Q1: What is the primary function of MACRYNAL SM 510n 60XMPAC in coating formulations?
A: It serves as a hydroxyl-functional acrylic resin designed to act as a reactive binder in two-component polyurethane and melamine-cured systems, contributing to film formation, hardness development, and chemical resistance.
Q2: Is this resin suitable for high-solids or low-VOC coatings?
A: Yes — its moderate molecular weight and controlled viscosity enable formulation of high-solids coatings, supporting VOC reduction strategies without compromising application properties or cure performance.
Q3: How does SM 510n 60XMPAC perform in weathering and UV stability compared to standard acrylic resins?
A: As a purely acrylic hydroxyl resin with no aromatic content, it offers inherently good UV stability and resistance to chalking or yellowing, making it well-suited for exterior architectural and industrial maintenance coatings requiring long-term gloss and color retention.
Q4: Can this resin be blended with other hydroxyl-functional resins or crosslinkers?
A: Yes — it is compatible with common aliphatic isocyanate crosslinkers and shows good miscibility with other hydroxyl-functional acrylics, polyester, and alkyd resins, allowing formulators flexibility in balancing performance attributes such as flexibility, hardness, and drying speed.
Q5: What solvent systems is SM 510n 60XMPAC typically supplied in, and are adjustments needed for specific thinners?
A: It is commonly supplied in aromatic-free solvent blends such as xylene-free mineral spirits or ester/alcohol mixtures; solvent selection for dilution should consider evaporation rate, solvency power, and compatibility with co-resins and crosslinkers — always verify with small-scale trials.
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