# POLYURETHANE RECOATABLE COATING (N-TYPE) RAINBOW PAINTS ## Product Code No.745HS (EP-66) ## Type High-solids two-component recoatable topcoat formulated with modified epoxy polyol resin & non-yellowing aliphatic polyisocyanate hardener. ## Application Top finish for vehicles, timber, metal, FRP, chemical plant, power station & general steel anti-corrosion systems. ## Properties 1. Compatible with all existing coating systems for overcoating 2. High gloss, smooth elegant film 3. Long-term weather resistance, no discoloration / gloss loss 4. Excellent resistance to oil, solvents & chemicals 5. Good abrasion resistance ## Specification Data - Gloss: Gloss / Semi-gloss - Color: White, custom colors - Flash Point: Above 20°C (68°F) - Specific Gravity: ≥1.3 kg/L (mixed paint) - Viscosity: 70~80 KU (25°C) - Drying Time - Surface dry: Within 30 mins (25°C) - Hard dry: Within 20 hrs (25°C) - Full cure: 7 days - Film Thickness: Wet film 125~250 μm, Dry film 100~200 μm - Volume Solids: 80% (mixed paint) - Theoretical Coverage: 12.9 m²/Gal, 4.2 m²/L, 2.9 m²/kg (@100μm DFT) - Recoating Interval: Min. 24 hrs, Max. 7 days (25°C) / 3 days (30°C) - Mix Ratio: Base : Hardener = 80 : 20 by weight (marked on bucket) - Pot Life: 2 hours at 25°C - Thinner: No.1005 Thinner SP-12 - Thinner Dosage: 5~10% by weight ## Compatible Primers No.908 Wash Primer, No.1006 Epoxy Zinc Phosphate Primer, No.1011 Inorganic Zinc Primer ## Compatible Topcoats Full series Rainbow topcoats, polyurethane topcoats, fluorocarbon topcoats ## Storage Stability: Minimum 3 years under normal storage ## Application Methods Airless Spray, Brush Coating, Roller Coating ### Airless Spray Parameters Nozzle: 0.019"~0.025", air pressure 5~6 kg/cm², pressure ratio ≥33:1 ## Construction Precautions ⚠️ 1. Mix base & hardener evenly, stand 10~20 mins reaction before use. 2. Fully remove grease, sludge, dust, rust & salts from substrate surfaces. 3. Avoid construction below 10°C or RH >85%; fully dry damp surfaces. 4. Clean all tools right after use. 5. Adequate ventilation required for tank interior work. 6. Roughen aged coating surface if recoating interval exceeds limit to boost interlayer adhesion. 7. Minor chalking/fading after long-term outdoor UV exposure will not impact coating physical performance. ## Note All datasheet data are internal lab test results for construction reference only. Service performance varies by environment, this document does not constitute legal liability warranty of the manufacturer. Contact Rainbow technical support for further details.