Polymer Nation U-51 Clear Aliphatic MCU
Product Overview
U-51 is a non-yellowing, one-component, aliphatic moisture cure urethane (MCU) coating with excellent wear, stain resistance and adhesion properties. When used as a topcoat over conventional coatings, U-51 provides excellent chemical resistance and dramatically improved abrasion resistance.
Uses and Benefits
U-51 is primarily used as a clear topcoat due to its unsurpassed UV, stain, mar and abrasion resistance. It can be applied to floors and walls and adheres well to many substrates including concrete, gypsum, cement board, metals, vinyl, PVC and fiberglass. It can also be applied direct to concrete as a sealer and topcoat.
*Product can be accelerated using U-51 Accelerator
Technical Data Sheet
The data below was gathered at temperatures of 72-75°F and 30-50% R
| Mix Ratio by Volume | 1 |
| Mixed Viscosity | 300-380 cP 25°C/77°F |
| Work Time | 45-60 minutes |
| Dry to Touch | 5 hours |
| Through Dry | 7-8 hours |
| Dry to Walk | 12-16 hours |
| Dry to Light Use | 24 hours |
| Full Cure | 7 days |
| Pendulum Hardness (König) | 40 @ 24 hours |
| Pendulum Hardness (König) | 65 @ 7 days |
| Gloss @ 60 Degree Angle | >90 |
| VOC’s of Mixed Material | <50 g/l EPA Method 24 |
| Color Scale | 0.5-1.0 per ASTM D1500 |
| Solids by Volume Mixed | >99% |
| Application in Mils | 3-4 mil |
| Available Colors | Clear and Color Packs |