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High hydroxyl functionality for excellent crosslinking density with amino and isocyanate curing agents.
Optimized molecular weight distribution delivering superior flow, leveling, and gloss retention.
Low volatile organic compound (VOC) content, supporting compliance with stringent environmental regulations.
Excellent compatibility with common solvent-borne and high-solids coating systems.
Consistent batch-to-batch reproducibility ensuring reliable performance in industrial manufacturing.
Automotive OEM clearcoats and basecoats.
Industrial maintenance coatings for metal substrates.
General-purpose coil coatings requiring high durability and weather resistance.
Powder coating hybrids for enhanced film formation and mechanical properties.
High-performance can and coil finishes demanding excellent corrosion resistance.
| Chemical Type | Hydroxyl-functional acrylic copolymer |
| Product Form | Liquid resin solution |
| Appearance | Clear, colorless to pale yellow liquid |
| Solvent System | Standard aromatic hydrocarbon blend (e.g., xylene/toluene) |
| Non-Volatile Content (NV%) | 70 ± 1 wt% |
| Hydroxyl Value (OH#) | 85–95 mg KOH/g |
| Acid Value | < 5 mg KOH/g |
| Viscosity (25°C, DIN ISO 2556) | 400–700 mPa·s |
Q1: What is the primary function of MACRYNAL SM 2727 70X in coating formulations?
A: MACRYNAL SM 2727 70X 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, hardness development, and chemical resistance while maintaining good gloss and clarity.
Q2: Is this resin compatible with common crosslinkers used in industrial coatings?
A: Yes — it is specifically formulated for compatibility with aliphatic and aromatic isocyanates (e.g., HDI and IPDI trimer adducts) as well as amino resins such as high- and low-methylated melamines. Compatibility should always be verified experimentally under intended formulation conditions.
Q3: How does the 70% solids content influence formulation handling and VOC considerations?
A: The 70% non-volatile content enables higher solids formulations, supporting reduced solvent demand and lower overall VOC emissions compared to lower-solids alternatives. Solvent selection and adjustment should align with regulatory requirements and application method (e.g., spray, coil, or roller coating).
Q4: What are typical storage and handling recommendations?
A: Store in tightly sealed containers in a cool, dry, and well-ventilated area away from direct sunlight and ignition sources. Avoid prolonged exposure to temperatures above 40 °C. Before use, ensure adequate mixing to maintain homogeneity, especially after extended storage.
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