5500 EX PolyUrea/Polyaspartic Coating
5500 EX is an 87% solids, two-component aliphatic MDI polyurea-aspartic blend. It is ideal for:
- Slow-set applications where extended working time is essential.
- High-gloss and high-build finishes.
- Use as a clear finish coat with excellent elongation, flexibility, and impact resistance.
- USDA compliance for incidental food contact.

Advantages
- UV-stable and does not chalk or yellow.
- Excellent stain and abrasion resistance.
- High adhesion to concrete and topcoats.
- Waterproof and elastomeric properties for durability.
- Fast turnaround times for floor applications.
Applications
5500 EX is versatile and suitable for:
- Decorative concrete floor finishes.
- Industrial, commercial, and residential floor coatings.
- Kitchen floor sealing and finishing.
- Clear topcoats for color chips and quartz.
- Slabs, stairs, pedestrian walkways, and exterior applications.
Preparation
- Concrete Cure: Ensure a minimum 28-day cure.
- Surface Cleaning: Remove contaminants like oils, wax, and curing agents.
- Profile Creation: Provide a rough surface profile (2-3 mils) for optimal bonding.
- Moisture Testing: Use ASTM F1869 to measure moisture vapor transmission (MVT).
Priming & Moisture Vapor Reduction
- Self-priming or compatible with ASTC primers like 6000 Series Epoxy Primer, 7001 Pen Prime, and 8000 CMW.
- For MVT above 3 lbs/1,000 sq ft/24 hrs, use 6007 Nova Bar Epoxy Primer.
Application Guidelines
- Mixing: Combine parts A and B at a 1:1 ratio using a jiffy mixer at slow speed.
- Pigment Addition:
- Add 12–14 oz of ASTC pigment per gallon.
- For white, add 16 oz per gallon.
- Add 3–4 oz of xylene for better pigment dispersion.
- Coating:
- Apply with a squeegee and back-roll using a 1/4″-3/8″ nap roller.
- Apply thin coats of 5–10 mils.
- Recoat within 1–2 hours or after light sanding if exceeded.
General Physical Characteristics
Characteristic | Details |
Solids | 87% |
Hardness (ASTM D2240) | Shore A 85, Shore D 50 |
Gel Time | 20 minutes at 75°F |
Elongation | 50-60% |
Compression Strength | 24 hrs: 11,200 psi; 7 days: 14,100–19,000 psi |
UV Resistance | Excellent |
Mix Ratio | 1:1 |
Pot Life | 25 minutes at 75°F |
Limitations
- Not resistant to all tire stains; use with compatible vapor barriers if needed.
- Do not use on wet surfaces or expose to moisture.
- Store kits on wood pallets at room temperature and out of direct sunlight.
- For professional applicators only. Refer to the MSDS before use.
Chemical Resistance
Chemical | 24 hrs | 7 days |
10% Acetic Acid | + | Yellowing |
50% Sulfuric Acid | + | + |
Hydrochloric Acid (38%) | + | + |
Motor Oil | + | + |
Transmission Fluid | + | + |
Mustard | – | Yellowing |
Key:
- Positive Result (No Effect)
- Negative Result (Slight Effect)