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Fast-reacting polyamine-based curing agent optimized for ambient-cure epoxy coatings.
Delivers excellent chemical resistance, particularly to hydrocarbons, solvents, and mild acids.
Provides low viscosity and good compatibility with standard liquid epoxy resins (e.g., DGEBA types).
Enables high-gloss, smooth film formation with minimal surface defects and low blush tendency.
Formulated with controlled reactivity for extended pot life while maintaining rapid through-cure at room temperature.
Industrial maintenance coatings for steel structures and process equipment.
Concrete floor coatings in warehouses, pharmaceutical facilities, and food processing plants.
Marine and offshore protective coatings for topside and splash-zone applications.
Electrical insulation coatings for transformers, busbars, and switchgear components.
High-performance tank linings for water storage and non-aggressive chemical containment.
| Chemical Type | Polyoxyalkylene polyamine adduct |
| Product Form | Liquid |
| Appearance | Clear to pale yellow, homogeneous liquid |
| Primary Applications | Ambient-cure epoxy protective and decorative coatings |
| Key Features | Low volatility, low odor, non-skinning, amine hydrogen equivalent weight (AHEW) ~185–195 g/eq |
| Benefits | Improved worker safety, reduced VOC emissions, consistent cure performance across humidity variations |
| Storage Stability | 12 months in original unopened container at 15–25°C |
| Compatibility | Designed for use with standard bisphenol-A epoxy resins (e.g., EPON™ 828, D.E.R.™ 331) |
Q1: What is the primary function of ARADUR 115-3 X 70 CI in epoxy coating systems?
A: ARADUR 115-3 X 70 CI is a cycloaliphatic amine-based curing agent specifically formulated to provide enhanced chemical resistance, low color development, and improved weathering performance in high-performance epoxy coatings—particularly for industrial maintenance, protective linings, and corrosion-resistant applications.
Q2: Is this curing agent suitable for ambient-cure or accelerated-cure formulations?
A: Yes, ARADUR 115-3 X 70 CI offers good reactivity at ambient temperatures while remaining compatible with moderate heat-cure schedules. Its balanced cure profile supports both field-applied ambient-cure systems and shop-applied thermal-cure processes without excessive exotherm or premature gelation.
Q3: How does ARADUR 115-3 X 70 CI compare to conventional aliphatic amines in terms of yellowing and UV stability?
A: Unlike many standard aliphatic amines, ARADUR 115-3 X 70 CI features a cycloaliphatic structure that significantly reduces susceptibility to photo-oxidative yellowing. This makes it well-suited for topcoats and clear finishes where long-term color retention and gloss stability are critical.
Q4: Can it be used in solvent-free or high-solids epoxy coating systems?
A: Yes—ARADUR 115-3 X 70 CI is designed for compatibility with low-VOC and high-solids epoxy resin blends. It exhibits favorable viscosity characteristics and good miscibility with common solid epoxy resins, supporting formulators in meeting regulatory and performance targets for sustainable coating solutions.
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