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Low-VOC, water-dispersible polyisocyanate curing agent compliant with global environmental regulations.
Excellent compatibility with aqueous acrylic, polyester, and hybrid resin systems.
Fast ambient-cure kinetics enabling efficient production line throughput without forced drying.
Superior hydrolytic stability for extended pot life in formulated waterborne coatings.
Delivers high crosslink density, resulting in exceptional hardness, chemical resistance, and gloss retention.
Automotive OEM and refinish waterborne basecoat/clearcoat systems.
Industrial maintenance coatings for metal substrates including machinery and agricultural equipment.
Architectural and decorative waterborne topcoats for interior/exterior metal and wood substrates.
Waterborne coil coating primers and topcoats for pre-painted steel and aluminum.
High-performance packaging coatings requiring FDA-compliant migration control (when formulated per regulatory guidelines).
| Chemical Type | Aliphatic polyisocyanate (HDI-based trimer) |
| Product Form | Water-dispersible liquid |
| Appearance | Clear to slightly hazy, colorless to pale yellow dispersion |
| Solids Content (wt%) | 30–34% |
| pH (at 25°C) | 7.0–8.5 |
| Viscosity (mPa·s, Brookfield RVT, #2 spindle, 20 rpm, 25°C) | 150–400 |
| NCO Content (wt%) | 6.0–7.2% |
| Primary Applications | Two-component (2K) waterborne polyurethane coatings |
Q1: What types of waterborne resins is NPU CORONATE AQ-105 compatible with?
A: NPU CORONATE AQ-105 is specifically designed for use with waterborne polyurethane dispersions (PUDs), acrylic emulsions, and hybrid acrylic-polyurethane systems. It provides efficient crosslinking while maintaining colloidal stability in aqueous formulations.
Q2: How does AQ-105 affect pot life and film formation in waterborne coatings?
A: AQ-105 offers extended pot life at ambient temperature due to its controlled reactivity with water, allowing practical mixing and application windows. Film formation proceeds via coalescence followed by gradual crosslinking, resulting in improved hardness, chemical resistance, and block resistance without compromising flexibility.
Q3: Is special handling or neutralization required before adding AQ-105 to a formulation?
A: No neutralization is needed. AQ-105 is supplied as a stable, non-ionic aqueous dispersion and can be incorporated directly into most pH-stabilized waterborne systems (typically pH 7.5–9.0) under mild agitation. Avoid highly acidic conditions (pH < 6) to prevent premature hydrolysis.
Q4: Can AQ-105 be used in low-VOC or zero-VOC coating systems?
A: Yes — AQ-105 contains no organic solvents and generates only water and small amounts of inert byproducts upon curing, making it well-suited for low-VOC and zero-VOC compliant waterborne industrial and architectural coatings.
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