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Low-viscosity liquid polyamide offering excellent compatibility with epoxy resins.
Provides superior flexibility and impact resistance in cured epoxy coatings and adhesives.
Enables ambient-temperature curing with extended pot life for improved processing control.
Delivers enhanced chemical resistance, particularly to alkalis and solvents.
Non-toxic formulation compliant with major industrial safety and handling standards.
Industrial maintenance coatings for steel structures and pipelines.
Marine and offshore protective coatings requiring corrosion resistance.
Electrical insulation systems and encapsulants for transformers and busbars.
High-performance structural adhesives for metal and composite bonding.
Concrete repair mortars and flooring systems requiring toughness and durability.
| Chemical Type | Polyamide adduct (modified dimer acid-based) |
| Product Form | Liquid |
| Appearance | Amber to light brown transparent liquid |
| Viscosity (25°C) | 1,800–2,500 mPa·s |
| Amine Value | 220–240 mg KOH/g |
| Color (Gardner) | ≤8 |
| Density (25°C) | 0.95–0.97 g/cm³ |
| Storage Stability | Stable for ≥12 months at 5–30°C in sealed containers |
Q1: What is the primary function of ADEKA Polyamide Curing Agent 625 in epoxy systems?
A: ADEKA Polyamide Curing Agent 625 is a low-viscosity, aliphatic polyamide-based hardener designed to react with epoxy resins, enabling ambient- or low-temperature cure while delivering good flexibility, adhesion, and chemical resistance in the final coating or adhesive film.
Q2: Is ADEKA Polyamide Curing Agent 625 suitable for food-contact or potable water applications?
A: This product is not pre-approved for direct food-contact or potable water applications. Formulators must conduct full regulatory evaluation—including migration testing and compliance verification—based on their specific end-use conditions, substrate, and applicable regional regulations.
Q3: How does humidity affect the curing performance of ADEKA Polyamide Curing Agent 625?
A: As a polyamide-type hardener, it exhibits relatively good moisture tolerance during cure compared to amine-epoxy systems sensitive to CO₂ or high humidity. However, prolonged exposure to high relative humidity (>85%) may delay surface dryness or lead to surface bloom; optimal results are achieved under controlled ambient conditions.
Q4: Can ADEKA Polyamide Curing Agent 625 be blended with other epoxy hardeners?
A: Yes, it can be co-formulated with other amine-based or modified polyamide hardeners to fine-tune pot life, cure speed, flexibility, or chemical resistance—though compatibility and stoichiometric balance should be confirmed through small-scale trials before full-scale use.
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