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Flexible, low-viscosity polyamide curing agent enabling excellent workability and extended pot life.
Delivers superior adhesion to metals, concrete, and composite substrates across varying humidity conditions.
Provides good chemical resistance—particularly to alkalis, salts, and mild solvents—after full cure.
Enables ambient-temperature cure with balanced mechanical properties, including impact resistance and flexibility.
Compatible with standard liquid epoxy resins (e.g., D.E.R.™ 331, D.E.R.™ 332) for broad formulating versatility.
Protective coatings for industrial steel structures and marine infrastructure.
Concrete repair mortars and flooring systems requiring flexibility and moisture tolerance.
Adhesives and laminating systems in transportation and wind energy composites.
Electrical encapsulants and insulating varnishes for medium-voltage components.
Repair compounds and grouts used in oil & gas and water treatment facilities.
| Chemical Type | Polyamide adduct of fatty acid and polyamine |
| Product Form | Liquid |
| Appearance | Amber to light brown, clear to slightly hazy liquid |
| Amine Value (mg KOH/g) | 220–260 |
| Viscosity at 25°C (mPa·s) | 1,500–3,000 |
| Specific Gravity (25°C) | 0.94–0.98 |
| Primary Applications | Coatings, adhesives, composites, and repair mortars |
| Key Benefits | Low exotherm, ambient cure capability, and substrate versatility |
Q1: What types of epoxy resins is D.E.H.125 compatible with?
A: D.E.H.125 is primarily designed for use with liquid bisphenol-A and bisphenol-F epoxy resins, and demonstrates good compatibility with many standard industrial epoxy systems. It may also be used with certain modified or novolac epoxies, though formulation testing is recommended to confirm cure performance and final properties.
Q2: How does D.E.H.125 affect pot life and cure speed compared to conventional polyamide curing agents?
A: D.E.H.125 offers an extended working time (pot life) at ambient temperatures while still enabling efficient room-temperature or moderate-elevated temperature cures. Its reactivity profile balances handling convenience with reliable film formation and crosslink development, making it suitable for applications requiring longer processing windows without sacrificing final hardness or chemical resistance.
Q3: Is D.E.H.125 suitable for high-performance protective coatings?
A: Yes — D.E.H.125 is widely used in high-solids and solvent-free epoxy coating systems for industrial maintenance, marine, and infrastructure applications. When properly formulated, it contributes to excellent adhesion, moisture tolerance, flexibility, and resistance to corrosion, abrasion, and common chemicals.
Q4: Does D.E.H.125 require special handling or storage conditions?
A: D.E.H.125 should be stored in tightly sealed containers under dry, cool conditions, away from moisture and excessive heat. While not classified as highly reactive or hazardous under normal handling, it is advisable to avoid prolonged skin contact and ensure adequate ventilation during use, consistent with standard industrial hygiene practices for amine-containing materials.
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E-mail: wangxingqiang@ericwchem.com
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