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High hydroxyl functionality for efficient crosslinking with melamine and polyisocyanate curing agents.
Excellent compatibility with common solvent-based coating systems and other acrylic or polyester resins.
Delivers superior gloss retention, hardness development, and chemical resistance in cured films.
Designed for low-VOC formulations with balanced reactivity and pot life in ambient- and forced-dry applications.
Consistent batch-to-batch performance ensured by Allnex’s stringent quality control and polymerization process standards.
Automotive OEM clearcoats and basecoats requiring high durability and appearance.
Industrial maintenance coatings for metal substrates including agricultural and construction equipment.
General-purpose coil coatings where flexibility, adhesion, and weatherability are critical.
Appliance finishes demanding excellent mar resistance and long-term color stability.
High-performance can coatings for food and beverage packaging applications.
| Chemical Type | Hydroxyl-functional acrylic copolymer |
| Product Form | Liquid resin solution |
| Appearance | Clear to slightly hazy, pale yellow liquid |
| Solvent System | 75% BAC (butyl acetate) / 25% xylene blend |
| Solids Content | 75 ± 1 wt% |
| Hydroxyl Value | 65–75 mg KOH/g |
| Acid Value | < 5 mg KOH/g |
| Viscosity (25°C) | 4,000–6,000 mPa·s (Brookfield, spindle #3, 20 rpm) |
Q1: What is the primary function of MACRYNAL SM 2810 75BAC in coating formulations?
A: MACRYNAL SM 2810 75BAC serves as a hydroxyl-functional acrylic resin designed to act as a reactive binder in two-component polyurethane and polyester-based crosslinking systems, contributing to film hardness, gloss retention, and chemical resistance.
Q2: Is this resin suitable for high-solids or low-VOC coating applications?
A: Yes — its formulation supports high-solids coatings, and it is commonly incorporated into solventborne systems targeting reduced VOC content without compromising cure performance or final film properties.
Q3: How does SM 2810 75BAC compare to other hydroxyl acrylic resins in terms of compatibility with common crosslinkers?
A: It demonstrates broad compatibility with aliphatic isocyanate crosslinkers (e.g., HDI-based adducts and biurets) and exhibits good reactivity balance, enabling consistent pot life and efficient ambient- or forced-dry curing across diverse industrial coating systems.
Q4: Can this resin be used in automotive refinish or OEM topcoat applications?
A: Yes — it is frequently selected for premium refinish and select OEM topcoats where excellent clarity, UV stability, and compatibility with metallic and pearlescent pigments are required, particularly in clearcoat layers.
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