PRODUCT DESCRIPTION
Nippon Paint Penetrative Epoxy Primer is a high-performance, two-pack amidoamine-cured solvent-based epoxy primer specifically engineered for concrete floor surfaces. Formulated with low viscosity, it is designed for deep penetration into the concrete substrate, effectively sealing porosity and re-strengthening weak or powdery concrete. It is enhanced with specialized adhesion promoters to create a powerful bond between the concrete and subsequent coating layers. This primer serves as an essential "tie coat" for solvent-based topcoats like Nippon EA4 Finish and EA7 Finish, ensuring long-lasting durability and preventing peeling in high-traffic environments.
TECHNICAL DATA
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Paint Type: Solvent-based (Two-Pack Epoxy)
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Finishing: Gloss / Yellowish Clear
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Binder: Amidoamine-cured Epoxy
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Mixing Ratio: 1 : 1 (Base to Hardener by volume) or specialized weight ratios (refer to specific pack size)
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Pot Life: 4 hours (at 25°C – 30°C)
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Thinning: Ready for use; thinning is generally not required (Cleaning with SA-65 Thinner)
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Touch Dry: 2 – 3 hours
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Hard Dry: 16 hours
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Recoating Interval: Minimum 4 – 16 hours (depending on temperature); Maximum 7 days
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Theoretical Coverage: 6.25 – 7.00 m² per litre per coat (at 50 microns DFT)
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Shelf Life: Up to 24 months in a tightly sealed container
APPLICATION INSTRUCTIONS
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Mixing: Stir the Base (Part A) thoroughly. Gradually add the Hardener (Part B) and continue stirring until a completely homogeneous mixture is obtained.
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Application Method: Apply using a high-quality Brush or Roller (short nap/mohair roller recommended).
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Technique: Ensure the primer is worked into the pores of the concrete. For extremely porous surfaces, a second coat may be required.
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Cleaning: Clean all tools and equipment with Nippon SA-65 Thinner immediately after use.
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Safety: Ensure the area is well-ventilated. This product is flammable; keep away from heat, sparks, and open flames.
RECOMMENDED COATING SYSTEM
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Primer (1 Coat): Penetrative Epoxy Primer.
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Intermediate Coat (1 Coat): Nippon EA4 Finish / EA9 Finish (if required for build).
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Topcoat (2 Coats): Nippon EA4 Finish / EA7 Finish / FloorShield Series.
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Note: The topcoat should be applied once the primer is tack-free but before it completely hardens (within 7 days).
SURFACE PREPARATION
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General Cleaning: Substrate must be structurally sound, dry, and free from oil, grease, laitance, and other contaminants.
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Acid Etching: It is highly recommended to treat the concrete with a 5% sulphuric acid solution until effervescence stops. Wash thoroughly with clean water and allow to dry completely.
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Moisture Content: The concrete moisture content must be below 4% by weight (measured by a moisture meter).
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Repair: Cracks and hollow spots must be repaired using a suitable epoxy filler before the priming stage.
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Environmental Conditions: Do not apply if the relative humidity exceeds 85% or if the temperature is below 10°C.
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