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High hydroxyl functionality for excellent crosslinking density with melamine and polyisocyanate curing agents.
Low viscosity enables easy formulation and high solids content without solvent overload.
Superior weather resistance and UV stability for long-term outdoor performance.
Good compatibility with common acrylic, polyester, and alkyd resins in hybrid coating systems.
Consistent batch-to-batch reproducibility meeting stringent automotive and industrial OEM requirements.
Automotive topcoats (OEM and refinish) requiring high gloss and chip resistance.
Industrial maintenance coatings for metal substrates exposed to harsh environments.
Architectural coil coatings demanding durability, color retention, and formability.
Powder coating base resins when blended with appropriate crosslinkers for thermoset systems.
General-purpose high-performance air-dry and forced-dry industrial finishes.
| Chemical Type | Hydroxyl-functional acrylic copolymer |
| Product Form | Liquid resin solution |
| Appearance | Clear, pale yellow to amber liquid |
| Solvent System | Aromatic-free (typically xylene-free), low-VOC blend |
| Hydroxyl Value (mg KOH/g) | 135–145 |
| Acid Value (mg KOH/g) | < 5 |
| Non-Volatile Content (%) | 60 ± 1 |
| Viscosity (mPa·s, 25°C) | 800–1,200 |
Q1: What is the primary function of MACRYNAL SM 510n 60LG in coating formulations?
A: MACRYNAL SM 510n 60LG serves as a hydroxyl-functional acrylic resin designed to act as a reactive binder in two-component polyurethane and melamine-cured systems. It contributes to film formation, enhances hardness and chemical resistance, and supports good gloss retention and substrate adhesion.
Q2: Is this resin compatible with common crosslinkers used in industrial coatings?
A: Yes, it is formulated for compatibility with standard aliphatic and aromatic isocyanate crosslinkers (e.g., HDI- and IPDI-based adducts or biurets), as well as amino resins such as melamine-formaldehyde types. Compatibility and cure performance should be verified experimentally within the final formulation due to sensitivity to catalysts, solvents, and co-resins.
Q3: What solvent system is recommended for diluting MACRYNAL SM 510n 60LG?
A: The resin is supplied in a low-VOC aromatic-free solvent blend and is readily soluble in common oxygenated solvents (e.g., esters, ketones) and aromatic hydrocarbons. Avoid highly polar protic solvents like alcohols, which may interfere with storage stability or crosslinking efficiency.
Q4: How does this resin perform in terms of weathering and UV stability?
A: As a purely acrylic hydroxyl resin without aromatic backbone units, MACRYNAL SM 510n 60LG offers inherently good UV resistance and long-term gloss retention—making it suitable for exterior applications where durability under sunlight exposure is critical.
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