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Highly reactive aliphatic polyisocyanate based on hexamethylene diisocyanate (HDI) trimer chemistry.
Low-viscosity liquid formulation enabling easy handling, precise metering, and excellent compatibility with common polyols.
Excellent weather resistance and UV stability—ideal for outdoor and long-term durable coatings.
Low volatile organic compound (VOC) content, supporting compliance with stringent environmental and regulatory standards.
Consistent batch-to-batch performance ensured by BASF’s controlled manufacturing and quality assurance protocols.
High-performance automotive clearcoats and basecoats requiring gloss retention and chip resistance.
Durable industrial maintenance coatings for machinery, rail vehicles, and agricultural equipment.
Premium architectural coatings for façades, metal cladding, and aluminum composite panels (ACPs).
UV-resistant wood and plastic coatings used in premium furniture and exterior building components.
Two-component (2K) polyurethane systems for aerospace interior and non-structural composite applications.
| Chemical Type | Aliphatic HDI-based isocyanurate trimer |
| Product Form | Clear, low-viscosity liquid |
| Appearance | Colorless to pale yellow, transparent liquid |
| NCO Content (wt. %) | 17.0 – 17.8% |
| Viscosity at 25 °C (mPa·s) | 800 – 1,200 |
| Density at 20 °C (g/cm³) | 1.19 – 1.23 |
| Solvent Content (wt. %) | Non-solvented (100% reactive solids) |
| Storage Stability | ≥12 months at 20–25 °C in sealed original container |
Q1: What is the primary function of HB175 MP X in coating and adhesive formulations?
A: HB175 MP X is a low-viscosity, aliphatic polyisocyanate curing agent based on hexamethylene diisocyanate (HDI) trimer technology. It is designed to react with hydroxyl-functional resins—such as polyesters, acrylics, or polyethers—to form durable, chemically resistant, and weather-stable thermoset networks, particularly in high-performance two-component (2K) systems.
Q2: How does HB175 MP X differ from standard HDI trimer curing agents?
A: HB175 MP X features a specially modified molecular architecture that delivers enhanced compatibility with a broader range of hydroxyl-functional binders, improved pot life control at ambient temperatures, and reduced sensitivity to moisture during handling—without requiring additional stabilizers or solvents in many standard formulations.
Q3: What are typical storage and handling recommendations for this product?
A: Store in tightly sealed original containers under dry, cool conditions (ideally below 30 °C), protected from moisture, heat, and direct sunlight. Avoid prolonged exposure to ambient humidity during dispensing; use dry nitrogen blanketing when possible for extended open-container use. Always follow BASF’s Safety Data Sheet (SDS) for personal protective equipment and safe handling procedures.
Q4: Is HB175 MP X suitable for low-VOC or solvent-free applications?
A: Yes—HB175 MP X is inherently low in volatile organic content and can be effectively formulated into high-solids or solvent-free 2K systems. Its low viscosity enables good resin compatibility and reactivity without relying on high-boiling solvents, supporting compliance with evolving VOC regulations across major markets.
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