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Fast ambient-cure capability without forced heating, enabling efficient production cycles.
Excellent adhesion to damp, contaminated, or minimally prepared steel and concrete substrates.
Low viscosity and high reactivity with epoxy resins, facilitating easy handling and mixing.
Superior corrosion resistance in aggressive marine and industrial environments.
Reduced amine blush formation compared to conventional aliphatic amines, improving intercoat adhesion.
Marine coatings for ballast tanks, cargo holds, and offshore platforms.
Industrial maintenance coatings for steel structures in chemical plants and refineries.
Concrete repair and protective linings for wastewater treatment facilities.
Heavy-duty floor coatings requiring rapid return-to-service in warehouses and manufacturing plants.
High-performance epoxy primers and mid-coats for infrastructure protection.
| Chemical Type | Phenalkamine-based amine curing agent |
| Product Form | Liquid |
| Appearance | Amber to brown viscous liquid |
| Primary Applications | Epoxy resin curing for protective coatings and flooring |
| Key Features | Ambient cure, moisture tolerance, low blush tendency |
| Benefits | Reduced application time, improved substrate wetting, enhanced durability |
| Compatibility | Standard bisphenol-A and bisphenol-F epoxy resins |
| Storage Stability | 12 months in original unopened container at 15–25°C |
Q1: What is the primary chemical class and functional advantage of Aradur 3440?
A: Aradur 3440 is a phenalkamine-based curing agent, combining the reactivity of aromatic amines with the hydrophobicity and flexibility of alkyl chains. This structure delivers fast ambient-cure performance, excellent adhesion to damp or contaminated substrates, and enhanced resistance to moisture during cure — making it especially suitable for maintenance and offshore applications.
Q2: How does Aradur 3440 compare to conventional aliphatic amines in terms of pot life and film formation?
A: Compared to standard aliphatic amines, Aradur 3440 offers extended working time at ambient temperatures while still enabling rapid development of handling strength. Its molecular design supports good film formation even under low-temperature or high-humidity conditions where many amine curatives struggle with blush or incomplete cure.
Q3: Is Aradur 3440 compatible with standard epoxy resins used in protective coatings?
A: Yes — Aradur 3440 is formulated for broad compatibility with liquid bisphenol-A and bisphenol-F epoxy resins, as well as novolac epoxies. It is commonly used in high-solids and solvent-free industrial maintenance coatings, though optimal performance requires verification through small-scale formulation trials.
Q4: What safety and handling considerations apply when using Aradur 3440?
A: As with other amine-based curing agents, Aradur 3440 may cause skin sensitization and eye irritation. Users should wear appropriate personal protective equipment (PPE), including nitrile gloves, safety goggles, and respiratory protection if aerosols or mists are generated. Good ventilation is recommended during mixing and application.
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E-mail: wangxingqiang@ericwchem.com
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