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Water-reducible alkyd resin enabling low-VOC, high-performance coatings without organic co-solvents.
Excellent gloss retention and long-term durability in exterior architectural applications.
Good compatibility with acrylic emulsions and other waterborne resins for hybrid formulation flexibility.
Fast ambient cure with good early hardness development and block resistance.
Low yellowing tendency due to high-quality saturated fatty acid backbone.
Exterior architectural wall paints requiring weather resistance and aesthetic performance.
Waterborne wood stains and clear finishes for residential and commercial interiors.
Industrial maintenance coatings for metal substrates in mild-to-moderate exposure environments.
Decorative primers and undercoats for interior trim and furniture applications.
Hybrid waterborne topcoats combining alkyd aesthetics with acrylic processability.
| Chemical Type | Water-reducible alkyd resin (soy oil-modified, saturated fatty acid) |
| Product Form | Aqueous dispersion (water-based) |
| Appearance | Opaque white to off-white liquid |
| Non-Volatile Content (NV%) | ~40 ± 1 wt% |
| pH | 8.0 – 9.0 |
| Viscosity (Brookfield RVT, #2 spindle, 20 rpm, 25°C) | 150 – 350 mPa·s |
| Particle Size (D50) | 0.2 – 0.5 µm |
| Primary Applications | Architectural & industrial waterborne topcoats, stains, primers |
Q1: What is the primary function of RESYDROL AY 241w/40WA in waterborne coatings?
A: RESYDROL AY 241w/40WA is a water-reducible alkyd resin designed to provide excellent film formation, gloss development, and substrate adhesion in low-VOC, waterborne industrial and decorative coatings—particularly where traditional solventborne performance attributes are required without compromising environmental compliance.
Q2: Is this resin compatible with common waterborne acrylic or polyurethane dispersions?
A: Yes, RESYDROL AY 241w/40WA demonstrates good compatibility with many waterborne acrylics, polyurethane dispersions, and hybrid systems. Compatibility should be verified experimentally in the final formulation due to sensitivity to pH, ionic strength, and surfactant interactions.
Q3: How does the resin contribute to drying and through-dry performance?
A: As an auto-oxidative alkyd, RESYDROL AY 241w/40WA enables ambient-cure film formation via oxygen-initiated crosslinking. It typically delivers balanced surface dry and through-dry characteristics—faster than pure acrylic systems but slower than catalyzed polyurethanes—making it suitable for air-dried industrial maintenance and wood finishes.
Q4: Can it be used in direct-to-metal (DTM) applications?
A: Yes, RESYDROL AY 241w/40WA is frequently employed in waterborne DTM coatings for mild to moderate corrosion environments. Its polarity and film integrity support adhesion to properly prepared steel and aluminum substrates, though optimal corrosion resistance usually requires synergistic pigmentation and co-resin selection.
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E-mail: wangxingqiang@ericwchem.com
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
