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Water-reducible alkyd resin enabling low-VOC, high-performance coatings without organic solvents.
Self-emulsifying formulation provides excellent colloidal stability in aqueous dispersions.
Fast ambient cure with good hardness development and early block resistance.
Compatible with common coalescing agents and water-based acrylic or polyurethane hybrids.
Delivers balanced flexibility, adhesion, and chemical resistance for demanding industrial finishes.
Waterborne industrial maintenance coatings for metal substrates.
Architectural and decorative wood finishes requiring low odor and rapid dry-through.
Coatings for agricultural and construction equipment where durability and corrosion protection are critical.
Refinish coatings for OEM and aftermarket applications in transportation sectors.
| Chemical Type | Water-reducible alkyd resin (soy oil-modified) |
| Product Form | Aqueous dispersion |
| Appearance | Opaque white to off-white liquid |
| pH (at 25°C) | 8.0 – 9.0 |
| Solids Content (wt%) | 35 ± 1 |
| Viscosity (Brookfield RVT, Spindle #3, 20 rpm, 25°C) | 500 – 1500 mPa·s |
| Density (25°C) | 1.02 – 1.05 g/cm³ |
| Primary Applications | Industrial maintenance, wood coatings, general-purpose protective coatings |
Q1: What is the primary function of RESYDROL EZ 6635wcat/35WA in alkyd-based coatings?
A: RESYDROL EZ 6635wcat/35WA is a water-reducible, catalyzed alkyd resin designed to accelerate ambient-cure performance in low-VOC, high-solids, or waterborne hybrid coating systems—enabling faster through-dry and improved early hardness development without requiring forced drying.
Q2: Can this resin be used in fully waterborne formulations, or does it require co-solvents?
A: While RESYDROL EZ 6635wcat/35WA is water-reducible and dispersible, it typically requires a modest amount of hydrophilic co-solvent (e.g., glycol ethers) for stable dispersion and optimal film formation—especially in high-performance architectural or industrial maintenance coatings where water sensitivity must be minimized.
Q3: How does the built-in catalyst affect storage stability and pot life?
A: The integrated catalyst provides consistent cure activation but reduces shelf life compared to non-catalyzed alkyds; it is recommended to store the resin in tightly sealed containers at moderate temperatures and use formulated paints within a few days after mixing with hardeners or reactive additives.
Q4: Is RESYDROL EZ 6635wcat/35WA compatible with common crosslinkers such as melamine formaldehydes or polyisocyanates?
A: Yes—it demonstrates good compatibility with amino resins (e.g., high-etherified melamines) in baked systems and can be formulated with blocked isocyanates for ambient- or low-bake dual-cure applications; compatibility testing under intended processing conditions is advised due to its catalyzed nature.
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E-mail: wangxingqiang@ericwchem.com
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