Desmophen® NH 1520 is a low-viscosity, solvent-free liquid polyamide resin designed for use as a co-reactant with polyisocyanates in the formulation of high-solids, two-component polyurethane topcoats and solvent-free coating materials. Here are the key details from its technical datasheet:
Product Description:
- Chemical Characterization: Aminofunctional co-reactant for polyisocyanates.
- Physical Form: Transparent, yellowish liquid.
Specifications:
- Amine Value: 189 - 193 mg KOH/g
- Viscosity (25°C): 800 - 2,000 mPa·s
- Color (Hazen): ≤ 250
- Solids: 70%
- Amine Hydrogen Equivalent Weight (Theoretical): Approx. 290
- Density at 20°C: Approx. 1.06 g/ml
- Flash Point: Approx. 74°C
- Water Content: ≤ 0.15%
Compatibility:
Desmophen® NH 1520 is generally compatible with many polyisocyanates and prepolymers. However, compatibility testing is recommended for specific formulations.
Applications:
This resin is primarily used as a co-reactant with Desmodur® N products (polyisocyanates). It is suitable for:
- High-solids, two-component polyurethane topcoats
- Solvent-free coating materials
- Adhesive applications
Storage:
- Store in the original sealed Covestro container.
- Recommended storage temperature: 0 - 30°C.
- Protect from moisture, heat, and foreign material.
- Shelf life: Guaranteed for six months from the shipment date if stored properly.
Safety and Regulatory Information:
- Refer to the Safety Data Sheet for comprehensive safety information.
- The product is not designated for medical grade, food contact, or cosmetic applications unless specifically agreed upon with Covestro beforehand.
