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Fast-reacting aliphatic amine-based curing agent enabling short demolding cycles.
Excellent compatibility with standard liquid epoxy resins (e.g., DGEBA types).
Delivers high glass transition temperature (Tg) and superior mechanical strength in cured systems.
Low viscosity for easy handling, metering, and homogeneous mixing at ambient temperature.
Good chemical resistance post-cure, particularly to solvents and weak acids.
Precision casting of electrical insulators and encapsulation of electronic components.
Structural adhesives for automotive and transportation assembly.
High-performance composites in wind energy blade bonding and repair.
Tooling and mold-making compounds requiring rapid turnaround and dimensional stability.
Industrial flooring and grouting systems demanding fast return-to-service.
| Chemical Type | Aliphatic polyamine |
| Product Form | Liquid |
| Appearance | Clear, pale yellow to amber liquid |
| Primary Applications | Reactive hot-melt adhesives, casting, encapsulation, structural bonding |
| Key Features | Fast cure, low exotherm, high Tg, low viscosity |
| Benefits | Improved productivity, excellent adhesion to metals and composites, reduced energy consumption |
| Storage Stability | ≥12 months in sealed original container at 15–25 °C |
| Handling Precautions | Use in well-ventilated areas; wear nitrile gloves and eye protection |
Q1: What is the primary function of UR-41 in epoxy systems?
A: UR-41 is a latent amine-based curing agent designed to enable controlled reactivity in epoxy resins—offering extended pot life at ambient temperatures while allowing rapid and efficient crosslinking upon thermal activation.
Q2: Which epoxy resins is UR-41 typically compatible with?
A: UR-41 demonstrates broad compatibility with standard bisphenol-A and bisphenol-F based liquid and solid epoxy resins, as well as novolac epoxies—making it suitable for high-performance coatings, adhesives, and electrical encapsulation formulations.
Q3: How does UR-41 contribute to processing flexibility in industrial applications?
A: Its latent nature supports one-component (1K) formulation strategies, eliminating the need for on-site mixing and enabling stable storage, precise metering, and consistent cure performance across automated manufacturing processes such as coil coating or powder coating.
Q4: Is UR-41 suitable for applications requiring low VOC or solvent-free formulations?
A: Yes—UR-41 is a solid, non-volatile compound that supports high-solids and 100% solids epoxy systems, helping formulators meet stringent environmental and occupational health requirements without compromising cure efficiency or final film properties.
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E-mail: wangxingqiang@ericwchem.com
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