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Waterborne aliphatic polyisocyanate dispersion with low VOC content for sustainable coating formulations.
Excellent compatibility with acrylic, polyester, and hybrid waterborne resins.
Fast ambient-cure performance without requiring forced drying or high-temperature baking.
Outstanding hydrolytic stability and storage shelf life (≥12 months at 5–30 °C).
Low free NCO monomer content (<0.1 wt%), enhancing workplace safety and regulatory compliance.
Architectural interior wall paints requiring durable, non-yellowing finishes.
Industrial maintenance coatings for metal substrates in mild-corrosion environments.
Wood coatings for furniture and cabinetry where low odor and rapid handling are critical.
Automotive refinish basecoats and clearcoats compliant with regional VOC regulations.
Plastic coatings for automotive interior trim and consumer electronics housings.
| Chemical Type | Aliphatic polyisocyanate (HDI-based) dispersion |
| Product Form | Opaque white to off-white liquid |
| Appearance | Homogeneous aqueous dispersion |
| pH (25 °C) | 7.5–8.5 |
| Non-Volatile Content (wt %) | 45–47 |
| Density (20 °C, g/cm³) | 1.08–1.12 |
| Viscosity (DIN ISO 2556, mPa·s) | 150–350 |
| Storage Stability | ≥12 months at 5–30 °C, unopened |
Q1: What is the primary function of Bayhydur VP LS 2150 BA in waterborne coating systems?
A: Bayhydur VP LS 2150 BA is a water-dispersible polyisocyanate curing agent designed to react with waterborne polyols and amines, enabling ambient- or low-temperature crosslinking in high-performance, low-VOC coatings for industrial and protective applications.
Q2: Is Bayhydur VP LS 2150 BA compatible with common waterborne acrylic and polyester polyols?
A: Yes — it demonstrates broad compatibility with a wide range of commercially available waterborne hydroxyl-functional resins, including acrylics, polyesters, and hybrid dispersions, though optimal performance requires formulation-specific adjustment of pH, co-solvent content, and mixing sequence.
Q3: How does Bayhydur VP LS 2150 BA contribute to film formation and pot life control?
A: Its blocked-aliphatic isocyanate chemistry provides extended pot life at room temperature while supporting rapid film development upon mild thermal activation or ambient moisture-assisted curing, delivering balanced open time and final hardness build.
Q4: Can this curing agent be used in coatings requiring FDA-compliant or food-contact-safe formulations?
A: Bayhydur VP LS 2150 BA is not pre-approved for direct food contact; its suitability for regulated applications depends on full system evaluation, including final cured-film extraction testing and compliance verification by the formulator against applicable regional requirements.
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E-mail: wangxingqiang@ericwchem.com
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