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High reactivity with polyols and isocyanates for rapid gelation and short demold times.
Excellent compatibility with aromatic and aliphatic polyisocyanates in thermoset systems.
Enables production of rigid, dimensionally stable polyurethane foams and elastomers.
Low volatility and favorable handling characteristics under standard industrial conditions.
Consistent batch-to-batch performance supporting reliable process control and quality assurance.
Rigid polyurethane insulation foams for building envelope and refrigeration applications.
Structural reaction injection molding (RIM) and reinforced RIM (RRIM) components.
High-performance elastomeric castings for industrial rollers, mining screens, and wear parts.
Automotive seating and interior trim systems requiring controlled cure kinetics and low fogging.
| Chemical Type | Aromatic amine-based curing agent |
| Product Form | Liquid |
| Appearance | Amber to light brown transparent liquid |
| Primary Applications | Rigid PU foams, structural RIM, cast elastomers |
| Key Features | Fast-reacting, low-viscosity, high-temperature stability |
| Benefits | Improved productivity, enhanced mechanical properties, reduced cycle times |
| Storage Conditions | Store in original sealed containers at 15–25 °C; protect from moisture and direct sunlight |
Q1: What is the primary function of Covestro Curing Agent 2460M in coating and adhesive formulations?
A: Covestro Curing Agent 2460M is a low-viscosity, aliphatic polyisocyanate designed to serve as a crosslinker for hydroxyl-functional resins—such as polyesters, acrylics, and polyethers—in two-component (2K) solventborne and high-solids coating systems. It enables excellent film formation, rapid cure at ambient or elevated temperatures, and contributes to superior weather resistance and mechanical durability.
Q2: Is Covestro Curing Agent 2460M suitable for use in low-VOC or high-solids applications?
A: Yes—its low viscosity and high NCO content allow formulators to achieve high-solids formulations with reduced solvent demand. It is widely used in industrial maintenance, automotive refinish, and general metal finishing coatings where VOC compliance and application efficiency are key considerations.
Q3: How does Covestro Curing Agent 2460M compare to aromatic isocyanates in terms of yellowing and UV stability?
A: As an aliphatic polyisocyanate, 2460M offers significantly improved UV stability and non-yellowing performance compared to aromatic alternatives. This makes it especially suitable for topcoats and clearcoats requiring long-term gloss retention and color fidelity under outdoor exposure.
Q4: What are typical handling and storage recommendations for this curing agent?
A: Store in tightly sealed containers under dry, cool conditions (below 30 °C), protected from moisture and direct sunlight. Due to its reactivity with water, avoid prolonged exposure to humid environments during handling. Always follow standard industrial hygiene practices for isocyanate handling, including appropriate PPE and ventilation.
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