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Low-VOC, water-dispersible aliphatic polyisocyanate crosslinker for environmentally compliant coatings.
Excellent hydrolytic stability and extended pot life in aqueous dispersions.
Enables fast ambient- or low-bake cure with superior film hardness and chemical resistance.
Compatible with a broad range of acrylic, polyester, and hybrid waterborne resins.
Delivers low yellowing and high UV resistance in clear and pigmented topcoats.
Automotive refinish clearcoats and basecoats.
Industrial maintenance coatings for metal and plastic substrates.
Wood furniture and cabinetry waterborne topcoats.
Architectural wall and trim coatings requiring high durability.
Coil coatings for pre-finished building panels and appliances.
| Chemical Type | Aliphatic polyisocyanate (HDI-based) |
| Product Form | Water-dispersible liquid |
| Appearance | Clear to slightly hazy, pale yellow liquid |
| NCO Content (wt%) | 9.5–10.5% |
| pH (10% aqueous dispersion) | 7.0–8.5 |
| Solids Content (wt%) | 35–40% |
| Viscosity (25°C, mPa·s) | 200–600 |
| Storage Stability (25°C) | ≥6 months in sealed container |
Q1: What types of waterborne resins is NPU CORONATE AQ-200 compatible with?
A: NPU CORONATE AQ-200 is specifically designed for use with aqueous polyacrylates, polyurethane dispersions (PUDs), and hybrid latex systems. It provides efficient crosslinking in neutral to mildly alkaline formulations and is not recommended for highly acidic or strongly cationic systems without prior compatibility testing.
Q2: How does AQ-200 affect pot life and film formation in waterborne coatings?
A: As a blocked aliphatic isocyanate curing agent, AQ-200 offers extended pot life at ambient temperatures—typically several hours depending on formulation pH, co-solvent content, and catalyst presence. Film formation proceeds via thermal activation, with full crosslinking generally achieved above 80 °C; lower-temperature cure is possible with appropriate catalysts and extended dwell time.
Q3: Is AQ-200 suitable for low-VOC or zero-VOC coating systems?
A: Yes—AQ-200 is a water-dispersible, non-solvent-based curing agent with negligible VOC contribution. When formulated with compliant waterborne binders and minimal co-solvents, it supports the development of low-VOC architectural, industrial, and wood coatings meeting major regional regulatory expectations for waterborne systems.
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