Water-reducible alkyd resin enabling low-VOC formulations without sacrificing performance.
Excellent compatibility with acrylic emulsions and other waterborne binders for hybrid systems.
Provides superior gloss retention and hardness development in ambient-cure coatings.
Delivers balanced drying speed—fast initial set followed by gradual through-cure.
Stable in neutral to mildly alkaline pH ranges, supporting broad formulation flexibility.
Architectural interior wall paints requiring washability and low odor.
Industrial maintenance coatings for metal substrates in mild-corrosion environments.
Wood finishing systems where clarity, flow, and sandability are critical.
Low-VOC decorative primers and undercoats for residential and commercial use.
Refinish coatings for furniture and cabinetry in professional workshops.
| Chemical Type | Water-reducible alkyd resin (soy-oil modified) |
| Product Form | Liquid dispersion in water |
| Appearance | Opaque off-white to light tan liquid |
| pH (10% solution) | 7.5 – 8.5 |
| Solids Content (wt%) | 68 – 72 |
| Viscosity (Brookfield RVT, #3, 20 rpm, 25°C) | 1,200 – 2,500 mPa·s |
| Density (20°C) | ~1.02 g/cm³ |
| Key Features | Low VOC (<50 g/L), self-emulsifying, no co-solvent required |
Q1: What is the primary function of RESYDROL SAM 165w/70LGWA in waterborne alkyd coatings?
A: RESYDROL SAM 165w/70LGWA is a self-emulsifiable, low-VOC alkyd resin designed to provide excellent film formation, hardness development, and gloss retention in water-reducible architectural and industrial maintenance coatings. It enables stable water dispersion without requiring external surfactants or co-solvents in many formulations.
Q2: Is this resin compatible with acrylic emulsions and other common waterborne binders?
A: Yes, RESYDROL SAM 165w/70LGWA exhibits good compatibility with a wide range of acrylic, vinyl acetate, and styrene-acrylic emulsions. It is commonly used in hybrid systems to enhance drying performance, scrub resistance, and substrate wetting—particularly on porous or low-energy surfaces.
Q3: How does this resin contribute to drying and through-dry performance?
A: As an auto-oxidative alkyd, RESYDROL SAM 165w/70LGWA undergoes air-assisted crosslinking after water evaporation, delivering progressive hardness build and improved through-dry compared to purely physical-drying systems. Its molecular design supports balanced open time and final cure speed in ambient-cure applications.
Q4: What are typical formulation considerations for optimizing gloss and flow?
A: For optimal gloss and leveling, RESYDROL SAM 165w/70LGWA is typically combined with rheology modifiers that support sag resistance without compromising flow, and with coalescing aids that enhance particle fusion during film formation. Formulators often adjust pH (7.5–9.0) and use mild neutralizing agents to stabilize viscosity and improve shear response.
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