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Low-viscosity liquid enabling excellent mixing and processing with standard epoxy resins.
Fast-reacting at ambient temperature, supporting rapid cure development without forced heat.
Provides outstanding chemical resistance, particularly to hydrocarbons and solvents.
Delivers high mechanical strength and adhesion to diverse substrates including steel, concrete, and composites.
Low odor and reduced volatility compared to conventional amine curing agents, enhancing workplace safety.
Structural adhesives for automotive and aerospace assembly.
High-performance flooring and industrial coatings systems.
Repair mortars and grouts for concrete infrastructure rehabilitation.
Composite matrix formulations requiring fast ambient-cure capability.
Electrical encapsulation and potting compounds demanding low exotherm and dimensional stability.
| Chemical Type | Epoxy-modified aliphatic amine |
| Product Form | Liquid |
| Appearance | Pale yellow to amber clear liquid |
| Density (25°C) | 0.94–0.97 g/cm³ |
| Viscosity (25°C) | 200–400 mPa·s |
| Amine Hydrogen Equivalent Weight (AHEW) | 125–135 g/eq |
| Primary Applications | Ambient-cure structural adhesives, protective coatings, repair mortars |
| Key Features | Fast ambient cure, low viscosity, low odor, high adhesion |
Q1: What is the primary function of Aradur 835 in epoxy formulations?
A: Aradur 835 is an epoxy-modified amine curing agent designed to provide enhanced compatibility with epoxy resins, improved pot life control, and reduced surface sensitivity—particularly beneficial in high-performance coating and adhesive applications where consistent film formation and low blush tendency are required.
Q2: How does Aradur 835 differ from conventional aliphatic amines?
A: Unlike standard aliphatic amines, Aradur 835 incorporates epoxy modification that moderates reactivity, extends working time, and improves compatibility with hydrophobic resin systems—resulting in smoother application characteristics and better intercoat adhesion in multi-layer epoxy systems.
Q3: Is Aradur 835 suitable for ambient-cure applications?
A: Yes, Aradur 835 is formulated for ambient-temperature curing of epoxy resins and delivers reliable performance across typical industrial temperature ranges without requiring forced drying or elevated post-cure cycles—though full property development may benefit from mild thermal conditioning depending on film thickness and environmental conditions.
Q4: Can Aradur 835 be used in high-solids or solvent-free epoxy systems?
A: Yes, Aradur 835 is compatible with high-solids and 100% solids epoxy formulations, offering good viscosity contribution and phase stability—making it well-suited for demanding applications such as flooring, tank linings, and structural adhesives where low VOC content and high build are critical.
Q5: What handling precautions should be observed when using Aradur 835?
A: As with other amine-based curing agents, appropriate personal protective equipment—including chemical-resistant gloves, eye protection, and adequate ventilation—should be used during handling and mixing. Skin contact should be avoided, and users should consult the Safety Data Sheet for detailed occupational hygiene and first-aid guidance.
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