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Key technical facts
- Mixing Ratio (by Weight)
- A/B (80/20)
- Pot Life (hours, 23°C, 100 ml)
- Min. 4
- Touch dry
- ≈ 45 minutes
- Full Cure (Weeks)
- 1
- Mixed Density (g/cm³, 20°C)
- 1,29 ± 0,10
- Packaging
- Available in 10 kg and 20 kg sets. For the 20 kg set: A = 16 kg / B = 4 kg.
Last updated:
This page has been translated from the product's original information. Please refer to the technical data sheet for binding technical values.
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Description
DEMCO® PUR 450 UVM/W is a two-component, water-based, PUD-based, clear, aliphatic polyurethane topcoat varnish. It is used on epoxy and polyurethane floor systems as well as on terrazzo, microcement and similar surfaces to create a matt or gloss decorative topcoat and to protect the surface. It provides high UV, abrasion and scratch resistance.
Advantages
- High UV resistance
- High abrasion and scratch resistance
- Good chemical resistance
- High surface adhesion
- Fast drying
- Low VOC and low odour
- Clear appearance, matt and gloss options
- Can be applied by roller, brush or airless spray.
Technical Properties
| Number of Components | 2 |
| Mixing Ratio (by Weight) | A/B (80/20) |
| Mixed Density (g/cm³, 20°C) (TS EN ISO 2811-1) | 1,29 ± 0,10 |
| Solids content (by weight) | 43 |
| Pot Life (hours, 23°C, 100 ml) (DIN 16945) | Min. 4 |
| Mixed Viscosity (mPas, 25°C) (EN ISO 3219) | 40–60 |
| Theoretical consumption | 0.100–0.150 kg/m² |
| Dry film thickness | ≈ 30 µm / single coat |
| Touch dry | ≈ 45 minutes |
| Recoat Time (Hours) | ≈ 5 hours |
| Gloss | Matt: 11 / Gloss: 85 (60° gloss meter) |
| Open to traffic | 12°C: 24 h / 23°C: 18 h / 30°C: 12 h |
| Full Cure (Weeks) | 1 |
*These values may vary depending on environmental conditions (temperature and humidity) and the equipment used to take the measurements.
Storage and Shelf Life
Store at 15–25°C in dry, closed warehouses away from direct sunlight, in the unopened original packaging; 6 months.
Packaging
Available in 10 kg and 20 kg sets. For the 20 kg set: A = 16 kg / B = 4 kg.
Chemical Resistance
In tests based on EN 12720, a rating of 5 (best resistance) on a 0–5 scale was reported against the following chemicals:
| Ethanol (48%) – 1 hour | Result: 5/5 |
| Ammonium hydroxide (10%) – 1 minute | Result: 5/5 |
| Deionised water – 16 hours | Result: 5/5 |
| Coffee (4%) – 16 hours | Result: 5/5 |
| Tea (1%) – 16 hours | Result: 5/5 |
| Red wine – 5 hours | Result: 5/5 |
| Cola – 16 hours | Result: 5/5 |
| Sodium carbonate (10%) | Result: 5/5 |
| Fatty acid – 1 / 5 / 16 hours | Result: 5/5 |
| DOT4 brake fluid – 1 / 24 hours | Result: 5/5 |
