English
Español
tiếng việt
русский
Waterborne aliphatic polyisocyanate dispersion with low VOC content, compliant with stringent environmental regulations.
Excellent compatibility with a broad range of waterborne acrylic and polyurethane dispersions.
Enables fast ambient-cure performance while maintaining good pot life stability (typically ≥4 hours at 23 °C).
Delivers outstanding gloss retention, yellowing resistance, and UV stability in final coatings.
Low free monomer content (<0.1 wt%) ensures enhanced occupational safety and regulatory compliance.
Architectural interior wall and ceiling coatings requiring low odor and rapid drying.
Industrial maintenance coatings for metal substrates in mild to moderate exposure conditions.
Wood finishes for furniture and cabinetry where clarity, hardness, and non-yellowing performance are critical.
Plastic coatings for automotive interior trim and consumer electronics housings.
General-purpose high-performance waterborne topcoats for OEM and refinish applications.
| Chemical Type | Aliphatic polyisocyanate (HDI-based) dispersion |
| Product Form | Opaque white to slightly yellow liquid |
| Appearance | Homogeneous aqueous dispersion |
| Solids Content | 48–52 wt% |
| pH Value | 7.5–8.5 |
| Viscosity (23 °C, Brookfield RVT, spindle #3, 20 rpm) | 200–600 mPa·s |
| Free HDI Monomer | <0.1 wt% |
| Primary Applications | Two-component waterborne polyurethane coating systems |
Q1: What is the primary chemical composition of Bayhydur BL 5140?
A: Bayhydur BL 5140 is a water-dispersible aliphatic polyisocyanate based on hexamethylene diisocyanate (HDI) trimer chemistry, modified with hydrophilic groups to enable stable dispersion in aqueous systems without organic solvents or added surfactants.
Q2: How does BL 5140 differ from solvent-based HDI curing agents in terms of application performance?
A: As a waterborne system, BL 5140 enables significantly lower VOC content and improved workplace safety while maintaining good crosslinking efficiency, film hardness development, and resistance properties—though pot life and drying behavior may require adjustment compared to solvent-borne counterparts due to water evaporation dynamics and pH sensitivity.
Q3: Which types of waterborne resins is BL 5140 typically compatible with?
A: BL 5140 is designed for use with a broad range of anionic and non-ionic waterborne acrylics, polyurethane dispersions (PUDs), and hybrid polymer systems. Compatibility should be confirmed experimentally, especially with highly functional or low-pH resins, as stability and cure kinetics can vary.
Q4: What are key handling and storage recommendations for this product?
A: Store in tightly sealed original containers at temperatures between 5 °C and 30 °C, protected from moisture and freezing. Avoid prolonged exposure to high humidity during handling, and ensure equipment is clean and free of contamination—especially amines, acids, or metal ions—that could impair dispersion stability or reactivity.
Q5: Can BL 5140 be used in coatings requiring FDA-compliant or food-contact applications?
A: Bayhydur BL 5140 is not pre-approved for direct food-contact applications. Formulators must conduct full regulatory evaluation—including migration testing and compliance verification—within their final cured coating system, as suitability depends on formulation, cure conditions, substrate, and intended use.
Contact With Us:
E-mail: wangxingqiang@ericwchem.com
Have a Questions? Call Us:
Add:
Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
