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Multilac High-Performance Corrosion Protective Coatings 2K Mackthane Top Coat

A high-performance polyurethane topcoat formulated to protect structures in highly corrosive environments. Designed as the final coat after the application of an undercoat and mid-coat, it provides superior durability and long-lasting protection. With excellent resistance to chemical spills, it is ideal for industrial applications such as refineries, mines, exterior storage tanks, and marine structures.

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N/A
10–12 m² per litre per coat dependong on the surface
N/A
N/A
  • Refineries.
  • Mines.
  • Exterior Storage tanks.

1. Substrate Condition

  • The surface must be clean, dry, and free of all contaminants such as:
    • Oil, grease, dirt, dust, salts, and previous coating failures.
    • Suitable substrates include:
    • Properly prepared steel, aluminum, galvanized metal, and previously coated surfaces.

2. Preparation of New Steel

  • Abrasive blast clean to a minimum standard of ISO 8501-1 Sa 2½ (Near White Metal).
  • Ensure a surface profile of 40–75 microns for optimum adhesion.
  • Remove any residual dust or contaminants after blasting.

3. Preparation on Previously Coated Surfaces

  • Inspect the existing coating for adhesion and integrity.
  • Remove all loose, flaking, or poorly adhered paint by scraping, sanding, or blasting.
  • Abrade intact coatings to create a key for adhesion (e.g., sanding with 180–240 grit).
  • Clean the surface thoroughly (solvent wipe or detergent wash as appropriate).
  • Make sure the surface is completely dry before application.

4. Preparation on Galvanized or Aluminum Surfaces

  • Clean by solvent wiping.
  • Lightly abrade (sanding or sweep blasting) to remove oxidation.
  • Remove dust and contaminants before coating.

5. Environmental Conditions

  • Apply only when surface and ambient temperature are above 5°C (41°F) and at least 3°C above the dew point.
  • Relative humidity should be below 85% to avoid moisture entrapment.

6. Additional Notes

  • For best results, apply over compatible primers or intermediate coats as per system specifications.
  • Avoid contamination by dirt, moisture, or oils during application.
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