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Waterborne polyisocyanate-based curing agent with low VOC content, compliant with stringent environmental regulations.
Excellent compatibility with acrylic and polyester waterborne resins, enabling stable one-component and two-component formulations.
Fast ambient-cure capability with good through-cure performance, supporting efficient production cycles in industrial coating lines.
Superior hydrolytic stability—reduced sensitivity to moisture during storage and application compared to conventional aliphatic isocyanates.
Low haze and high clarity retention in clearcoats, delivering exceptional gloss and transparency in decorative and protective finishes.
Automotive OEM and refinish waterborne basecoat/clearcoat systems.
Architectural and industrial maintenance coatings for metal and wood substrates.
High-performance waterborne can coatings for food and beverage packaging.
Waterborne coil coatings requiring excellent flexibility, corrosion resistance, and bake performance.
Interior wood coatings for furniture and cabinetry where low odor and rapid handling are critical.
| Chemical Type | Aliphatic polyisocyanate dispersion (HDI-based) |
| Product Form | Opaque white to off-white liquid |
| Appearance | Homogeneous aqueous dispersion |
| Solids Content | 70 ± 2 wt% |
| pH Value | 7.5 – 8.5 |
| Viscosity (25°C, mPa·s) | 300 – 800 (Brookfield RVT, spindle #3, 12 rpm) |
| NCO Content | 6.8 – 7.2 wt% |
| Storage Stability | ≥6 months at 5–30°C in sealed container |
Q1: What types of waterborne resins is KY-401-70 compatible with?
A: KY-401-70 is specifically designed for use with waterborne polyurethane dispersions (PUDs), acrylic emulsions, and hybrid acrylic-PUD systems. It demonstrates good compatibility and reactivity across a range of anionic and non-ionic stabilized dispersions commonly used in industrial coatings and adhesives.
Q2: How does KY-401-70 affect film formation and curing speed in ambient conditions?
A: KY-401-70 promotes efficient crosslinking at ambient temperatures, supporting rapid development of hardness and chemical resistance without requiring forced drying or elevated bake cycles. Film formation remains smooth and defect-free when formulated within recommended pH and solids ranges, and it enhances early water resistance compared to uncrosslinked systems.
Q3: Is KY-401-70 suitable for low-VOC or zero-VOC coating formulations?
A: Yes — KY-401-70 is a water-based, solvent-free curing agent with negligible VOC content. It supports formulation of compliant low-VOC coatings when used in conjunction with other low-VOC raw materials, aligning with global regulatory trends toward sustainable waterborne systems.
Q4: What is the typical dosage range for KY-401-70 in standard formulations?
A: Dosage depends on the resin type, desired performance balance, and application requirements. It is generally used at low concentrations — typically ranging from 0.1% to 2% by weight relative to total formulation solids — and should be optimized through small-scale trials to achieve target cure response and film properties.
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E-mail: wangxingqiang@ericwchem.com
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