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Low-VOC, water-based formulation compliant with stringent environmental regulations including EU REACH and US EPA guidelines.
Excellent compatibility with standard waterborne epoxy resins, enabling stable one-component or two-component systems.
Fast ambient-cure capability with full hardness development within 24–48 hours at 25°C and 60% RH.
Superior adhesion to steel, concrete, and galvanized substrates without primer requirement in many industrial applications.
Outstanding chemical resistance to alkalis, salts, and mild solvents after full cure.
Waterborne epoxy primers and intermediate coats for marine and offshore steel structures.
High-performance flooring systems in food processing, pharmaceutical, and cleanroom facilities.
Protective coatings for potable water storage tanks and pipelines (NSF/ANSI 61 compliant when formulated accordingly).
Anti-corrosive coatings for bridges, power plants, and wastewater treatment infrastructure.
Industrial maintenance coatings requiring rapid return-to-service and low odor during application.
| Chemical Type | Polyamide-modified polyamine dispersion |
| Product Form | Opaque aqueous dispersion |
| Appearance | Off-white to light beige liquid |
| pH (25°C) | 8.2–8.8 |
| Non-Volatile Content (wt%) | 52–56% |
| Viscosity (Brookfield RVT, #3 spindle, 20 rpm, 25°C) | 1,800–2,500 mPa·s |
| Specific Gravity (25°C) | 1.02–1.05 |
| Storage Stability | ≥12 months at 5–30°C in sealed original container |
Q1: What types of waterborne epoxy resins is HDH6381 compatible with?
A: HDH6381 is specifically formulated to cure common anionic and non-ionic waterborne epoxy dispersions, including modified bisphenol-A and bisphenol-F based systems. Compatibility should be confirmed through small-scale formulation trials due to variations in resin particle size, charge stability, and co-solvent content.
Q2: How does HDH6381 affect pot life and film formation in waterborne epoxy coatings?
A: HDH6381 offers extended pot life compared to many amine-based curing agents, supporting practical application windows under ambient conditions. It promotes coalescence and crosslinking during ambient or mild thermal drying, yielding films with good hardness development and chemical resistance without requiring high-temperature bake cycles.
Q3: Can HDH6381 be used in low-VOC or zero-VOC coating formulations?
A: Yes — HDH6381 is supplied as a water-based dispersion with negligible VOC content, making it suitable for formulating compliant low-VOC industrial and protective coatings. Its compatibility with waterborne resins supports full aqueous systems without need for organic co-solvents.
Q4: What is the recommended dosage range for HDH6381 in typical formulations?
A: Dosage depends on the epoxy equivalent weight (EEW) of the resin and desired performance balance. HDH6381 is typically used at low concentrations relative to resin solids — generally ranging from 0.1% to 2% by weight of total formulation — and should be optimized via stoichiometric calculation and empirical testing.
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E-mail: wangxingqiang@ericwchem.com
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