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High-reactivity aliphatic polyisocyanate based on hexamethylene diisocyanate (HDI) trimer chemistry.
Low volatility and excellent hydrolytic stability, supporting safe handling and extended pot life.
Provides outstanding UV resistance and color retention in demanding outdoor applications.
Compatible with a broad range of hydroxyl-functional resins including polyesters, acrylics, and polyethers.
Meets stringent VOC regulations and supports low-VOC coating formulations.
Automotive OEM and refinish clearcoats and basecoats.
Industrial maintenance coatings for infrastructure and equipment.
High-performance coil coatings for metal substrates.
Architectural and façade coatings requiring long-term gloss and weatherability.
Plastic coatings for exterior automotive trim and consumer electronics.
| Chemical Type | Aliphatic HDI-based polyisocyanate (trimer) |
| Product Form | Liquid |
| Appearance | Clear, pale yellow liquid |
| NCO Content (wt%) | Approx. 19.5–20.5% |
| Viscosity (mPa·s at 25°C) | 1,800–2,400 |
| Density (g/cm³ at 25°C) | 1.17–1.21 |
| Solvent Content | Non-solvented (100% reactive solids) |
| Primary Applications | Two-component polyurethane coatings |
Q1: What is the primary chemical composition of Suprasec 5005?
A: Suprasec 5005 is a low-viscosity aliphatic polyisocyanate based predominantly on hexamethylene diisocyanate (HDI) trimer chemistry, designed to offer excellent weather resistance and minimal yellowing in demanding coating applications.
Q2: How does Suprasec 5005 differ from aromatic isocyanate curing agents?
A: Unlike aromatic isocyanates such as TDI or MDI derivatives, Suprasec 5005 is aliphatic—making it highly resistant to UV degradation and discoloration. This makes it especially suitable for high-performance topcoats where long-term gloss retention and color stability are critical.
Q3: What types of resins is Suprasec 5005 typically formulated with?
A: It is commonly used with hydroxyl-functional acrylics, polyesters, and alkyds in two-component (2K) solventborne and high-solids coating systems for industrial, automotive refinish, and protective applications.
Q4: What handling precautions should be observed when working with Suprasec 5005?
A: As with all isocyanate-containing products, appropriate personal protective equipment—including nitrile gloves, chemical-resistant goggles, and respiratory protection in poorly ventilated areas—is essential. Avoid skin contact and inhalation of vapors or aerosols, and always consult the Safety Data Sheet (SDS) before use.
Q5: Can Suprasec 5005 be used in low-VOC or high-solids formulations?
A: Yes—its low viscosity and high functionality enable efficient formulation in low-VOC and high-solids 2K systems without requiring excessive solvent dilution, supporting compliance with evolving environmental regulations and performance targets.
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