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Waterborne formulation enabling low VOC emissions and compliance with stringent environmental regulations.
Excellent hydrolytic stability for reliable performance in aqueous coating systems.
Good compatibility with waterborne polyisocyanates, facilitating robust two-component (2K) polyurethane formulations.
Provides balanced flexibility and hardness in cured films, supporting durable mechanical properties.
Easy dispersion in water without need for high-shear mixing or excessive surfactants.
Architectural and industrial maintenance coatings requiring low-odor, eco-friendly solutions.
Waterborne wood coatings for furniture, flooring, and interior joinery.
Automotive refinish clearcoats and basecoats where reduced environmental impact is critical.
Plastic coatings for consumer electronics and household appliances.
General-purpose protective coatings for metal substrates in indoor applications.
| Chemical Type | Aliphatic polyester polyol dispersion |
| Product Form | White to slightly yellowish aqueous dispersion |
| Appearance | Opaque liquid, homogeneous, free of visible particles |
| Solids Content (wt%) | 45–49% |
| pH (at 23 °C) | 7.5–8.5 |
| Viscosity (mPa·s, Brookfield RVT, spindle #3, 20 rpm, 23 °C) | 1,500–3,500 |
| Hydroxyl Value (mg KOH/g) | 48–54 |
| Primary Applications | 2K waterborne polyurethane coatings |
Q1: What is the primary function of Desmophen 800 in waterborne coating formulations?
A: Desmophen 800 functions as a reactive polyol component in two-component (2K) waterborne polyurethane systems, contributing to film formation, flexibility, and chemical resistance. It is designed to react with isocyanate crosslinkers to build durable, low-VOC thermoset networks.
Q2: Is Desmophen 800 compatible with common aliphatic isocyanate crosslinkers used in high-performance coatings?
A: Yes, Desmophen 800 is formulated for compatibility with standard aliphatic polyisocyanates—including HDI-based biuret and isocyanurate types—enabling robust cure performance and excellent weathering resistance in architectural, industrial, and automotive refinish applications.
Q3: How does Desmophen 800 support low-VOC compliance in finished coatings?
A: As a waterborne polyester polyol, Desmophen 800 enables formulators to significantly reduce or eliminate organic solvents in the polyol component. Its aqueous dispersion contributes to overall formulation VOC levels well below regulatory thresholds for many industrial and decorative coating categories.
Q4: Can Desmophen 800 be used in both ambient-cure and forced-dry coating systems?
A: Yes, it performs effectively across ambient-cure conditions and accelerated thermal curing (e.g., 60–80 °C). Cure speed and final film properties can be tuned by adjusting the NCO:OH ratio, catalyst selection, and drying profile.
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