BestPrimer EP702
Water-based epoxy primer, two components
Advantages:
High penetration, enabling durable bonding.
Good adhesion to common construction surfaces, including metal.
Usable on surfaces with high moisture (relative humidity up to 8%).
Allows the surface to release moisture vapor during curing.
High resistance to alkalis, aggressive corrosion and chemicals.
Easy to apply with tools such as brushes, rollers and pressure spray guns, etc.
Long workable time, easy to apply and saves material.
Environmentally friendly.
BestPrimer EP702
Technical summary
Category
Floorings
Water-based epoxy primer, two components
Technical documents
Product data
| State |
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| Density |
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| Solids content | ≥ 40% (by weight). | |||||||||||||||
| Coverage | 0.10 ÷ 0.25 kg/m² per coat (depending on surface condition). | |||||||||||||||
| Mixing ratio | Component A : Component B = 1:4 (by weight). | |||||||||||||||
| Packaging | 05; 25 kg/set. | |||||||||||||||
| Storage | In a dry, cool place. Temperature 5°C ÷ 35°C. | |||||||||||||||
| Shelf life | 12 months from the date of manufacture (in the original sealed container, stored in a cool, dry place). | |||||||||||||||
| Application environment | Minimum +20°C (at least 5°C above the dew point). Maximum +35°C. Maximum relative humidity 80%. | |||||||||||||||
| Pot life (workable time) |
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| Overcoat interval |
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| Mechanical properties | Sample after 07 days of curing at 30°C.
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Applications
BestPrimer EP702 has low viscosity and high penetration, so it is used to create an interface primer between surfaces to be protected and epoxy-based BestCoat protective paints, increasing adhesion strength.
BestPrimer EP702 can be applied to concrete floors and bases, cement render, fiber-cement cladding panels, epoxy mortar, etc., for factories, warehouses, parking garages, etc.
Advantages
High penetration, enabling durable bonding.
Good adhesion to common construction surfaces, including metal.
Usable on surfaces with high moisture (relative humidity up to 8%).
Allows the surface to release moisture vapor during curing.
High resistance to alkalis, aggressive corrosion and chemicals.
Easy to apply with tools such as brushes, rollers and pressure spray guns, etc.
Long workable time, easy to apply and saves material.
Environmentally friendly.
Application instruction
Surface preparation:
If the surface is concrete, the compressive strength must be ≥ 20 MPa and tensile strength ≥ 1.5 MPa. The base surface must be flat, dense and dry. Cracks and defective spots must be treated, repaired and patched per the proper procedure. Impurities, debris, dust, oil and grease, etc. must be completely removed.
Coating system:
For highly absorbent and friable surfaces, add 10% clean water by weight for the first coat and apply at least 2 primer coats before applying epoxy paints of the BestCoat range.
For flat, dense surfaces with medium roughness, only one coat of BestPrimer EP702 is needed after the surface has been cleaned by suitable means.
For power-floated surfaces previously treated with a hardener, treat the surface with BestClean FA or roughen it before applying BestPrimer EP702.
Mixing:
Add component A into component B at the specified ratio. Use an electric mixer or a dedicated mixing machine (300 to 400 rpm) to mix for about 3 minutes or longer until homogeneous. Let the material stand for about 05 minutes and re-mix before application.
Application:
Use a brush, short-nap roller or pressure spray gun to apply BestPrimer EP702 evenly over the entire surface to be coated at a coverage of 0.10 ÷ 0.25 kg/m²/coat. When applying the second primer coat or subsequent finish coats, ensure the first coat is completely surface-dry (not tacky).
Notes:
Do not exceed a coverage of 0.40 kg/m² under any circumstances.
The work area must be well-ventilated; avoid rain while the material has not fully cured.
Do not use material that has exceeded its working time.
Cleaning:
Use clean water and soap to wash tools before the material cures.
Safety guidance:
Both components are non-hazardous and non-flammable but may cause irritation to sensitive skin. Wear gloves, a mask and safety goggles during application.
If splashed into the eyes, nose or mouth, rinse immediately with plenty of clean water several times before going to the nearest medical facility for timely and proper treatment.