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Low-viscosity polyamide curing agent enabling excellent flow and wetting of substrates.
Offers extended pot life at ambient temperatures for improved processing flexibility.
Delivers robust mechanical properties and chemical resistance in cured epoxy systems.
Compatible with standard bisphenol-A and bisphenol-F epoxy resins.
Non-hazardous classification under GHS for transport and handling (non-ADR, non-IMDG).
Industrial floor coatings requiring durability and abrasion resistance.
Marine and offshore protective coatings for steel structures.
Electrical insulation systems in transformers and encapsulation compounds.
Adhesives and structural bonding formulations for metal and composite substrates.
Repair mortars and high-performance grouts for civil engineering applications.
| Chemical Type | Polyamide adduct |
| Product Form | Liquid |
| Appearance | Amber to light brown viscous liquid |
| Amine Value (mg KOH/g) | 340–380 |
| Viscosity @ 25°C (mPa·s) | 1,800–2,500 |
| Density @ 25°C (g/cm³) | 0.96–0.99 |
| Primary Applications | Epoxy coating, adhesive, and flooring systems |
| Key Features | Low exotherm, good flexibility, moisture tolerance |
Q1: What is the primary function of Aradur 250 in epoxy systems?
A: Aradur 250 is a polyamide-based curing agent designed to react with epoxy resins, enabling crosslinking at ambient or slightly elevated temperatures. It imparts flexibility, good adhesion to various substrates, and enhanced chemical resistance to the cured network.
Q2: Is Aradur 250 suitable for coatings requiring high moisture tolerance during application?
A: Yes — as a polyamide curing agent, Aradur 250 exhibits relatively low sensitivity to ambient humidity compared to amine- or anhydride-based alternatives, making it well-suited for industrial maintenance coatings applied under variable or moderately humid conditions.
Q3: How does Aradur 250 influence pot life and cure speed relative to other polyamide hardeners?
A: Aradur 250 offers a balanced profile: moderate pot life at room temperature (typically several hours depending on formulation), with reasonable through-cure development over 24–72 hours. Its reactivity is tuned for ease of handling without sacrificing final film performance.
Q4: Can Aradur 250 be used in food-contact or potable water applications?
A: Aradur 250 is not pre-qualified for direct food-contact or drinking water applications. Formulators intending such use must conduct full regulatory evaluation, including compliance verification against applicable regional requirements, as suitability depends on the complete cured system and end-use conditions.
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E-mail: wangxingqiang@ericwchem.com
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