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High hydroxyl functionality for excellent crosslinking efficiency with melamine and polyisocyanate curing agents.
Optimized molecular weight distribution for balanced flow, leveling, and film hardness in high-solids coatings.
Low viscosity enabling formulation flexibility and reduced solvent demand in environmentally compliant systems.
Superior UV resistance and long-term gloss retention in exterior architectural and automotive topcoats.
Consistent batch-to-batch reproducibility meeting stringent OEM and industrial coating quality requirements.
Automotive refinish clearcoats and basecoats.
Industrial maintenance coatings for metal substrates.
Architectural coil coatings requiring weatherability and formability.
General-purpose high-performance protective topcoats.
OEM appliance finishes requiring durability and chemical resistance.
| Chemical Type | Hydroxyl-functional acrylic copolymer |
| Product Form | Liquid resin solution |
| Appearance | Clear to slightly hazy, colorless to pale yellow liquid |
| Solvent System | Aliphatic hydrocarbon blend (e.g., Exxsol D series) |
| Hydroxyl Value (OHV) | 60–65 mg KOH/g |
| Non-Volatile Content (NV) | 58–62 wt% (at 120 °C, 30 min) |
| Viscosity (25 °C) | 400–700 mPa·s (Brookfield DV-II+ @ spindle #3, 60 rpm) |
| Gardner Color | ≤ 3 |
Q1: What is the primary function of MACRYNAL SM 510n 60LGV5 in coating formulations?
A: MACRYNAL SM 510n 60LGV5 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, enhances hardness and chemical resistance, and supports excellent gloss retention and weatherability in high-performance industrial and automotive topcoats.
Q2: Is MACRYNAL SM 510n 60LGV5 compatible with common isocyanate crosslinkers?
A: Yes, this resin is formulated for compatibility with standard aliphatic isocyanate crosslinkers, including HDI-based trimer and biuret types. Its hydroxyl value and molecular weight profile are optimized to support efficient curing, good pot life, and balanced reactivity under typical ambient or forced-dry conditions.
Q3: How should MACRYNAL SM 510n 60LGV5 be stored and handled to maintain stability?
A: Store in tightly sealed original containers in a cool, dry, well-ventilated area away from direct sunlight and heat sources. Avoid prolonged exposure to moisture or strong oxidizing agents. Under recommended storage conditions, shelf life is typically 12 months from date of manufacture. Always consult the Safety Data Sheet (SDS) for handling, PPE, and disposal guidance.
Q4: Can MACRYNAL SM 510n 60LGV5 be used in low-VOC or water-reducible systems?
A: While SM 510n 60LGV5 is a solventborne resin, its design supports formulation flexibility — it can be integrated into VOC-compliant solvent blends and is suitable for use in hybrid systems where partial solvent replacement or co-solvent optimization is pursued. For fully water-reducible applications, Allnex offers dedicated aqueous acrylic dispersions; this grade is not intended for direct water dilution.
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