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Water-reducible alkyd resin enabling low-VOC, high-performance coatings without sacrificing film integrity.
Excellent compatibility with acrylic dispersions and other waterborne resins for hybrid formulation flexibility.
Delivers superior gloss retention, hardness development, and through-dry characteristics in ambient-cure systems.
Optimized for use in high-solids, low-HAPs architectural and industrial maintenance coatings.
Provides good saponification resistance and hydrolytic stability in alkaline environments.
Architectural interior and exterior wall paints requiring enhanced durability and scrub resistance.
Industrial maintenance coatings for metal substrates, including railcars and agricultural equipment.
Wood finishing systems where water-reducibility and low-odor application are critical.
Marine maintenance primers and topcoats compliant with stringent VOC regulations.
General-purpose protective coatings for concrete and masonry surfaces.
| Chemical Type | Water-reducible alkyd resin (soybean oil-modified) |
| Product Form | Liquid dispersion in water |
| Appearance | Opaque white to off-white liquid |
| pH (10% in water) | 8.0 – 9.0 |
| Non-Volatile Content (wt%) | 42 ± 1 |
| Viscosity (Brookfield, RVT, #3, 20 rpm, 25°C) | 1,200 – 2,000 cP |
| Particle Size (D50) | 0.8 – 1.5 µm |
| Key Features | Low VOC (< 100 g/L), ambient cure, excellent coalescence |
Q1: What is the primary function of RESYDROL AZ 541w/42WA in waterborne alkyd formulations?
A: RESYDROL AZ 541w/42WA serves as a reactive coalescing agent and film-forming aid specifically designed for waterborne alkyd systems. It enhances interparticle fusion during drying, improves early hardness development, and supports excellent gloss retention without compromising storage stability.
Q2: Is RESYDROL AZ 541w/42WA compatible with other common waterborne resins such as acrylics or vinyl acetate copolymers?
A: Yes, it demonstrates good compatibility with a broad range of waterborne polymers including acrylic dispersions and VAE-based systems. Its low volatility and tailored hydrophobicity allow for effective integration into hybrid formulations without phase separation or viscosity instability.
Q3: How does RESYDROL AZ 541w/42WA contribute to VOC reduction in architectural and industrial coatings?
A: As a non-VOC, water-soluble alkyd modifier, it replaces traditional volatile organic coalescents like glycol ethers or ester alcohols. Its incorporation enables formulators to meet increasingly stringent regional VOC limits while maintaining performance in ambient-cure applications.
Q4: Can RESYDROL AZ 541w/42WA be used in both air-dry and forced-dry curing conditions?
A: Yes — it is engineered to perform effectively under ambient air-dry conditions typical of architectural coatings, and also supports accelerated film formation in low-temperature forced-dry scenarios (e.g., 40–60 °C), making it suitable for certain industrial maintenance applications.
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E-mail: wangxingqiang@ericwchem.com
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