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MIROTHANE PU 5631 Pigmented Undercoat

MIROTHANE PU 5631 is a high solids, low viscosity two pack polyurethane undercoat. It provides an excellent high gloss and distinction of image (DOI) when topcoated with one of Mirotone’s full gloss polyurethane topcoats.

  • Fast drying, ideal for automatic lines with in-line or early forced drying
  • Easy to sand, powders easily making it ideal for hand sanding
  • Has a slight sheen making it easier to see where it has been sanded
  • Low sink back, produces and excellent high gloss finish when topcoated with one of Mirotone’s full gloss polyurethane topcoats, comparable with the gloss achieved with a polyester undercoat
  • Excellent vertical hold up
White & Tinted
Slight Sheen
Very High
Vertical Hold Up
Solvent Resistance
Water Resistance
Levelling & Flow
Sink Back
6-7m2 per litre at 150 micron wet film build. This is dependent on the application equipment / gun set up and the article being coated.
Dry Time
Refer to Technical Data Sheet
Clean Up
Clean all equipment using MIROSOL 1222 or 1286 Thinner
4kg (3.4L) & 25kg (17L)
Product Code
  1. Suction Gun - Use 1.5 to 2mm (59-79 thou) orifice with 350-400kpa (50-55 psi).
  2. Pressure Pot - Use 1.5 to 2mm (59-79 thou) orifice with pressure pot air-cap. Gun pressure 350-400kpa (50-55 psi) and a pot pressure of 45kpa (6 psi) max.
  3. Airless Spray - Use 0.23 to 0.33mm (9-13 thou) orifice, 15cm fan (dependent on job) with regulated pump pressure of 350-400kpa (50-55 psi).
  4. Air Mix Guns - Settings similar to airless spray with the air-assisted regulator pressure at 70-90kpa (10-15psi).
  • Interior use. Interior doors, kitchen & bathroom cabinets, commercial joinery, wall panelling and domestic furniture.