Desmodur (Polyisocyanates)
Desmodur is a hardener component for lightfast two-component polyurethane coatings. It enhances durability, chemical resistance, and weather stability, making it ideal for industrial, automotive, and protective coatings.
Key Features & Benefits:
High Durability – Provides excellent scratch and impact resistance.
UV & Weather Resistant – Ensures long-lasting gloss and color stability.
Chemical Protection – Shields surfaces from abrasion, solvents, and harsh conditions.
Versatile Applications – Compatible with various polyurethane formulations.
Specifications
| Parameter | Specification |
|---|---|
| Chemical Name | Polyisocyanates |
| Appearance | Clear to slightly yellow liquid |
| NCO Content | 16 – 23% (varies by grade) |
| Density | ~1.15 g/cm³ (at 20°C) |
| Viscosity | 50 – 300 mPa·s (at 25°C) |
| Boiling Point | > 250°C |
| Flash Point | > 200°C (Closed Cup) |
| Solubility | Insoluble in water, soluble in organic solvents |
| Reactivity | Reacts with polyols to form polyurethane coatings |
| Shelf Life | Typically 6 – 12 months (in sealed container) |
| Storage Conditions | Store in a dry, airtight container away from moisture and direct heat |
Chemical Properties
| Property | Specification |
|---|---|
| Chemical Name | Polyisocyanates |
| Molecular Formula | Varies (based on grade) |
| NCO Content | 16 – 23% |
| Functional Groups | Isocyanate (-NCO) |
| Solubility | Insoluble in water, soluble in organic solvents |
| Reactivity | Reacts with polyols to form polyurethane coatings |
Physical Properties
| Property | Specification |
|---|---|
| Appearance | Clear to slightly yellow liquid |
| Density | ~1.15 g/cm³ (at 20°C) |
| Viscosity | 50 – 300 mPa·s (at 25°C) |
| Boiling Point | > 250°C |
| Flash Point | > 200°C (Closed Cup) |
| Storage Conditions | Store in a dry, airtight container away from moisture and direct heat |
Applications:
Industrial Coatings – Enhances protection for metal, machinery, and infrastructure
Automotive Coatings – Used in vehicle paints for gloss retention & durability.
Wood & Furniture Finishes – Improves wear resistance in furniture and flooring.
Marine & Protective Coatings – Ensures longevity in harsh environmental conditions.
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