# SOLVENT BASED ELASTOMERIC SEALER RAINBOW PAINTS ## Product Code No.420 ## Type Special primer for elastomeric topcoat, formulated with acrylic resin featuring excellent water and alkali resistance. ## Application Dedicated primer matched with NO.421 Water-Based Elastomeric Exterior Coating and SA2000 Rainbow Beautiful Exterior Wall Paint. ## Properties 1. Penetrates into cement pore structure to deliver superior adhesion 2. Penetrates aged cement substrates, harmonizes old coating surfaces and boosts topcoat interlayer adhesion 3. Good water and alkali resistance ## Specification Data - Color: Slightly Transparent - Flash Point: Above 30°C - Specific Gravity: ≥0.85 kg/L - Viscosity: 40~60 KU (25°C) - Drying Time - Surface dry: Within 2 hours (25°C) - Film Thickness: Wet film 67 μm, Dry film 10 μm - Theoretical Coverage: 15 ㎡/L, 17.6 ㎡/kg - Recoating Interval: 4 hours - Volume Solids: 15% - Thinner: NO.418 Oil-Based Cement Thinner - Thinner Dosage: 5~10% - Compatible Topcoats: NO.421 Water-Based Elastomeric Exterior Coating, SA2000 Rainbow Beautiful Exterior Wall Paint - Storage Stability: Minimum 3 years under normal storage ## Application Methods Brush Coating, Spray Coating, Roller Coating ## Construction Precautions ⚠️ 1. Fresh cement walls contain abundant free moisture and alkaline substances which will degrade film performance and adhesion. Allow full drying until moisture content drops below 12% before construction. 2. Thoroughly remove moisture, grease, sludge, dust and other contaminants from substrate surfaces prior to coating. ## Note All data provided in this product datasheet are derived from internal laboratory tests for construction design reference only. Actual performance varies subject to different construction environments. This document does not constitute any legally binding warranty or statement from the manufacturer. Contact our technical department for clarification of any uncertainties.