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Waterborne hydroxyl-functional acrylic resin designed for high-performance 2K polyurethane coatings.
Excellent compatibility with aliphatic isocyanate crosslinkers and common waterborne additives.
Provides outstanding gloss retention, hardness development, and chemical resistance in cured films.
Low VOC formulation support — compliant with stringent environmental regulations for architectural and industrial coatings.
Good flow and leveling characteristics, enabling smooth, defect-free film formation in spray and roller applications.
Architectural wall and ceiling coatings requiring durability and low-emission performance.
Industrial maintenance coatings for metal substrates in mild to moderate exposure environments.
Interior wood finishes for furniture and cabinetry where clarity and hardness are critical.
Waterborne 2K PU topcoats for transportation interiors (e.g., buses, railcars, and commercial vehicles).
High-end decorative coatings for pre-finished building panels and composite substrates.
| Chemical Type | Hydroxyl-functional acrylic copolymer |
| Product Form | Aqueous dispersion |
| Appearance | Clear to slightly hazy, colorless to pale yellow liquid |
| Solids Content (wt%) | 41.0 ± 1.0 |
| pH | 7.5 – 8.5 |
| Hydroxyl Value (mg KOH/g) | 65 – 75 |
| Viscosity (mPa·s, 25°C, Brookfield LVT, Spindle #3, 6 rpm) | 150 – 400 |
| Minimum Film Formation Temperature (MFFT) | ≥ 25°C |
Q1: What is the primary function of macrynal SM6825W 41wa in a coating formulation?
A: macrynal SM6825W 41wa serves as a hydroxyl-functional acrylic resin designed to act as a reactive binder in two-component polyurethane and polyester-based systems. It contributes to film formation, hardness development, gloss retention, and chemical resistance while maintaining good compatibility with common crosslinkers and solvents.
Q2: Is macrynal SM6825W 41wa suitable for waterborne industrial coatings?
A: Yes — it is a water-reducible hydroxyl acrylic resin formulated specifically for use in high-performance waterborne industrial coatings, including automotive refinish, general metal finishing, and plastic coatings where low VOC and balanced drying behavior are required.
Q3: Which crosslinkers are commonly compatible with this resin?
A: macrynal SM6825W 41wa exhibits good reactivity with standard aliphatic isocyanate crosslinkers (e.g., HDI trimer and biuret types) and melamine-formaldehyde resins. Compatibility and cure performance should be verified experimentally within the final formulation due to sensitivity to pH, catalysts, and co-solvent selection.
Q4: How should macrynal SM6825W 41wa be stored and handled?
A: Store in tightly sealed containers at temperatures between 5 °C and 30 °C, away from direct sunlight and freezing conditions. Avoid prolonged exposure to elevated temperatures or strong oxidizing agents. As with all acrylic dispersions, maintain good agitation before use to ensure homogeneity, and follow standard industrial hygiene practices during handling.
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E-mail: wangxingqiang@ericwchem.com
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