Nippon Paint PU Recoatable Lite Finish - Acrylic Polyurethane Topcoat

PRODUCT DESCRIPTION

Nippon Paint PU Recoatable Lite Finish is a high-performance, two-component, high-build aliphatic acrylic polyurethane topcoat. Specifically engineered for atmospheric environments, this premium finish provides a tough, glossy protective layer with exceptional weathering resistance. Whether used for industrial assets or architectural features, it ensures long-term color and gloss retention, even under intense UV exposure.

Its unique "long recoatability" property makes it a favorite for large-scale projects, allowing for maintenance and recoating even after extended periods of atmospheric exposure. It is the ideal solution for protecting steel, galvanized iron, aluminum, and metal roofing.

 

Technical Data

• Mixing Ratio: 9 parts by volume of Base to 1 part by volume of Hardener.

• Drying Time (at 25-30°C): Touch Dry in 2.5 hours; Hard Dry in 6.0 hours.

• Overcoating Time: Minimum 8 hours (dependent on temperature and humidity).

• Typical Thickness: 50 - 75 μm dry film per coat (80 - 125 μm wet film).

• Theoretical Coverage: 12.6 m²/litre (at 50 μm DFT) or 8.4 m²/litre (at 75 μm DFT).

• Volume Solids: 63 ± 2%.

• Pot Life: 5 hours after mixing (at 25-30°C).

Application Instruction

1. Mixing: Stir the Base content thoroughly, then gradually add the Hardener while continuing to stir until a completely homogeneous mix is achieved.

2. Thinning: Use Nippon Paint PU Recoatable Thinner. Thin up to 10% for brush/roller, 15% for compressed air spray, and 5% for airless spray.

3. Methods: Can be applied via Brush, Roller, Compressed Air Spray, or Airless Spray. For airless spray, a delivery pressure of 140-170 kg/cm² and a tip size of 0.015”-0.017” is recommended.
   
    

Recommended Coating System

• Steel System: * Primer: 1 coat of Nippon Paint EA9 Red Oxide Primer or NP 8048 Zinc Phosphate Primer.
                           * Topcoat: 2 coats of PU Recoatable Lite Finish.

• Concrete/Masonry System:

  • Primer/Sealer: 1 coat of NP EA9 White or 5100 Wall Sealer.

  • Topcoat: 2 coats of PU Recoatable Lite Finish.

Surface Preparation

1. Cleaning: Remove all wax, oil, and grease by solvent cleaning in accordance with SSPC-SP 1 guidelines.

2. Contaminant Removal: Soluble salts, dirt, and dust must be removed. Use a fresh water wash to ensure all soluble salts are gone before painting.

3. Abrasive Blasting (Steel): For maximum performance, steel surfaces should be abrasive blasted to Sa 2.5 or SSPC-SP 10 and suitably primed.

4. Sanding: For repainting or smoother surfaces, lightly sand the substrate with sandpaper (Grade #80 or #100) to enhance paint adhesion.

5. Environmental Check: Ensure the surface is dry and that the temperature is at least 3°C above the dew point with relative humidity below 85% to prevent application failure.