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High reactivity with epoxy resins enabling rapid gelation and short cure cycles.
Excellent chemical resistance post-cure, particularly to solvents and alkaline environments.
Low volatility and reduced amine odor compared to conventional aliphatic amines.
Good compatibility with standard bisphenol-A and bisphenol-F epoxy systems.
Consistent performance across varying humidity and temperature conditions.
Structural adhesives for aerospace and automotive bonding.
High-performance coatings for industrial flooring and tank linings.
Electrical encapsulants and potting compounds requiring thermal stability.
Composite matrix resins in wind turbine blade and marine applications.
Repair mortars and grouts for concrete rehabilitation systems.
| Chemical Type | Aliphatic diamine (hexamethylenediamine-based) |
| Product Form | Liquid solution |
| Appearance | Clear, pale yellow liquid |
| Amine Content | ~60 wt% active amine |
| Density (20 °C) | 0.92–0.94 g/cm³ |
| pH (10% aqueous solution) | 10.5–11.5 |
| Flash Point (closed cup) | ≥95 °C |
| Storage Stability | ≥12 months at 15–25 °C in sealed container |
Q1: What is the primary function of RHODIAMINE HMD 60% in epoxy systems?
A: RHODIAMINE HMD 60% serves as a highly reactive amine-based curing agent for epoxy resins, enabling rapid crosslinking at ambient or slightly elevated temperatures. It delivers excellent chemical resistance and mechanical performance in cured thermosets.
Q2: How does the 60% active amine content affect formulation handling and performance?
A: The 60% concentration reflects the active amine functionality dissolved in a compatible solvent carrier, which improves viscosity control and mixing homogeneity during processing. This formulation enhances shelf stability while maintaining high reactivity—no additional diluent is typically required for standard applications.
Q3: Is RHODIAMINE HMD 60% suitable for low-VOC or high-solids coating systems?
A: Yes—it is formulated to support high-solids and low-VOC epoxy coating applications where reduced solvent emissions are required. Its efficient cure kinetics allow for robust film formation without excessive volatile content.
Q4: What safety considerations should be observed when handling this product?
A: As with all amine-containing curing agents, appropriate personal protective equipment (PPE) including gloves, goggles, and respiratory protection should be used during handling. Ensure adequate ventilation, and refer to the Safety Data Sheet (SDS) for detailed exposure controls and first-aid measures.
Q5: Can RHODIAMINE HMD 60% be used in food-contact or potable water applications?
A: RHODIAMINE HMD 60% is not pre-approved for direct food-contact or potable water applications. End-use compliance must be verified through full system testing and regulatory evaluation by the formulator, as final approval depends on the complete cured formulation and intended service conditions.
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