Interzone 278 Single Coat is an epoxy coating. It is also suitable for structures in atmospheric environments where certain chemical splashes may occur, such as environments where petrochemical products, aliphatic solvents, alkaline substances and other chemicals may be splashed. A low-VOC, two-component, high-solids, high-build epoxy immersion coating. Drying time and recoating interval with winter-grade curing agent; pot life with winter-grade curing agent. Note: VOC value is typical and for guidance only. Parameters on this page: dry film thickness 200–500 µm (8–20 mils), theoretical spreading rate 2.77 m²/L, number of components two-component.
Parameter source: AKZONOBEL original technical data sheet (TDS) "Interzone 278 Single Coat"; values such as spreading rate are converted from TDS parameters and are for selection reference only.
The above content is compiled from the manufacturer's datasheet and this site's parameter tables. For selection, coating systems and lead times, pleaseContact Usfor confirmation.
This page carries the full TDS for this product, translated from the manufacturer's original document. No file download is needed; for an original-language copy, send an enquiry.
| Volume Solids | 83% |
|---|---|
| Dry Film Thickness | 200–500 µm (8–20 mil) |
| Theoretical Spreading Rate | 2.77 m²/L |
| VOC | 170 g/L calculated value 160 g/L China national standard GB 23985… |
| Density / Specific Gravity | 1.7 kg/L (14.2 lb/gal) |
| Number of Components | Two-component |
| Thinner | Normally no thinning is required |
| Mixing Ratio | 4 parts : 1 part (by volume) |
| Colour / Appearance | Limited colours, INTERZONE 278 |
For more Q&A on selection, application, acceptance and defect diagnosis, seeFAQsection.
A low-VOC, two-component, high-solids, high-build epoxy immersion coating.
Designed for immersion environments; a single coat provides long-term anti-corrosion protection. In low-temperature environments, a winter-grade curing agent may be used to accelerate curing.
A single coat is sufficient for immersion environments storing fresh water or salt water.
A single coat can achieve a dry film thickness of up to 500 µm; the film is extremely hard and has good damage resistance. It is also suitable for structures in atmospheric environments where certain chemical splashes may occur, such as environments where petrochemical products, aliphatic solvents, alkaline substances and other chemicals may be splashed.
This product is not suitable as a chemical-resistant tank coating, nor for environments with long-term chemical contact.
| Colour | Limited colours, INTERZONE 278 |
|---|---|
| Gloss | Semi-gloss |
| Volume Solids | 83% |
| Typical thickness | Dry film thickness 200–500 µm (8–20 mils) corresponds to wet film thickness 241–602 µm (9.6–24.1 mils) |
| Theoretical Spreading Rate | At 300 µm dry film thickness and the stated volume solids, 2.77 m²/L; at 12 mils dry film thickness and the stated volume solids, 111 ft²/US gal |
| Practical Spreading Rate | Allowing for a suitable loss factor |
| Application Methods | Airless spray, brush, roller. Drying time and recoating interval |
| Temperature | Surface Dry | Hard Dry | Minimum | Maximum |
| 10°C (50°F) | 12 h | 48 h | 14 days | |
| 15°C (59°F) | 8 h | 30 h | 10 days | |
| 25°C (77°F) | 4 h | 16 h | 5 days | |
| 40°C (104°F) | 2 h | 8 h | 48 h | |
| Flash point (typical) | Component A 10 °C (50 °F); Component B 65 °C (149 °F); after mixing 10 °C (50 °F) |
|---|---|
| Product weight | 1.7 kg/L (14.2 lb/gal) |
| Volatile Organic Compounds | 170 g/L calculated value 160 g/L China national standard GB 23985 coating hazard GB 30981.2-W-Pb≤1000-NC complies with GB 30981.2-2025. For more detailed information, see the "Product Characteristics" section. |
All surfaces to be coated shall be clean, dry and free from contaminants. Prior to application, all surfaces shall be assessed and prepared in accordance with ISO 8504:2000. Blast cleaning: for immersion environments, Interzone 278 must be applied directly to the steel structure surface, and surface preparation shall achieve a minimum of Sa2.5 (ISO 8501-1:2007) or SSPC-SP10. However, Interzone 278 may also be used in atmospheric environments with limited chemical splash resistance. When Interzone 278 is used in atmospheric environments, it shall be applied over an approved anti-corrosion primer.
Pre-primed surfaces: the primer surface shall be dry and free from any contaminants, and Interzone 278 must be applied within the specified recoating interval (refer to the relevant product data sheet). Areas with damage or defects shall be prepared to the specified standard, and a repair primer shall be applied before applying Interzone 278.
Galvanized steel shall be degreased to SSPC-SP1, then lightly blast cleaned to SSPC-SP7 or power tool cleaned to SSPC-SP3 before applying Interzone 278.
Before applying coatings to concrete, the concrete shall cure for at least 28 days. The moisture content of the concrete shall be less than 6%. All surfaces shall be clean, dry and free from curing compounds, release agents, trowelling compounds, surface hardeners, efflorescence, grease, oil, dirt, old coatings and loose or spalling concrete. All cast or precast concrete must also be brush-off blast cleaned or acid etched to remove laitance. Fill large cracks with suitable filler. For the first coat, it is advisable to thin the paint with thinner to allow effective penetration into the substrate.
| Mixing | This product is supplied in two containers as one unit. Mix the two components in the specified ratio in one operation, and use within the specified pot life. |
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(1) Stir the base (Component A) with a power stirrer.
(2) Mix all of the curing agent (Component B) with the base (Component A) and stir thoroughly with a power stirrer.
| Mixing ratio | 4 parts : 1 part (by volume) |
|---|
| Pot life | 10°C (50°F) | 15°C (59°F) | 25°C (77°F) | 40°C (104°F) |
| 4 h | 2 h | 1 h | 30 min |
| Suitable for airless spray | Recommended nozzle tip size 0.53–0.66 mm (21–26 thou); total paint pressure at the nozzle not less than 211 kg/cm² (3000 psi) |
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| Air Spray | Suitable - thin to 20% | Spray gun | DeVilbiss MBC or JGA |
| (Air spray | Air nozzle | 704 or 765 | |
| (with pressure pot) | Only suitable for | Spray painting | E |
application in atmospheric environments)
| Brush | Applicable — for small-area repair only | Typical thickness 100 µm (4.0 mils) |
| Roller application | Typical thickness 100 µm (4.0 mils) | |
| Thinner | International GTA007 | Normally no thinning is required. |
In extreme cases, consult the local technical representative.
Do not thin beyond the requirements of local environmental regulations.
| Cleaner | International GTA220 |
|---|---|
| Interruption of work | Do not allow material to remain in hoses, guns, or spray equipment. Thoroughly flush all equipment with International GTA220. |
Use immediately after mixing; if the pot life is exceeded, discard and mix a fresh batch.
| Cleaning | All equipment should be cleaned immediately after use with International thinner. Flushing spray equipment periodically during daily work is good practice. Cleaning frequency depends on the volume sprayed, temperature, spraying time, including interruptions, and other factors. |
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All surplus paint and empty containers must be disposed of in accordance with the relevant local laws/regulations.
Apply by airless spray to achieve the maximum film thickness per coat. Application methods other than airless spray cannot achieve the required film thickness. With air spray, several cross coats are required to achieve the maximum film thickness. At low or high temperatures, special application techniques may be required to achieve the maximum film thickness.
Other application methods, such as brush or roller, often require multiple coats and should only be used for small areas and repair work. In addition, such application methods are only recommended for Interzone 278 under atmospheric conditions. When applied in immersion service, avoid application methods other than airless spray.
Dilution should be avoided for airless spray application. Dilution should only be used in certain specific cases to facilitate application.
This product does not cure adequately below 5 °C (41 °F). For optimum performance, curing should take place above 10 °C (50 °F).
The temperature of the surface to be coated must be at least 3 °C (5 °F) above the dew point.
Like all epoxy paints, Interzone 278 will chalk and fade when exposed to atmospheric conditions. However, this phenomenon will not affect anti-corrosion performance.
Drying time and recoat interval with winter-grade curing agent
| Temperature | Surface Dry | Hard Dry | Minimum | Maximum |
| 10°C (50°F) | 10 h | 30 h | 14 days | |
| 15°C (59°F) | 6 h | 16 h | 7 days | |
Pot life with winter-grade curing agent
| 10°C(50°F) | 15°C (59°F) |
|---|---|
| 3 h | 1.5 h. |
Note: VOC values are typical and for guidance only. They may vary with colour and general production tolerances.
For immersion service, Interzone 278 must be applied directly to properly prepared bare steel. However, in the splash zone under atmospheric conditions, suitable primers that can be used are as follows:
| Intercure 200 | Interzinc 52 |
|---|---|
| Intergard 251 | Interzinc 86 |
| Interzinc 42 | Interzinc 315 Interzone 278 should only be recoated with itself and must never be recoated with other products. |
For details, consult International Paint.
| For further information on the industry standards, terms and abbreviations used in this datasheet, see www.international-pc.com | In the following documents on the website: • Definitions and abbreviations • Surface preparation • Coating application • Theoretical and practical spreading rate. These sections are also available as separate publications on request. |
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This product must be applied at the production site by professional applicators in accordance with the recommendations in this manual, the Material Safety Data Sheet and the instructions on the container label. Do not use this product without first reviewing the Material Safety Data Sheet (MSDS) that International Paint provides for its customers.
All work related to the application and use of this product must be carried out in accordance with the relevant national health, safety and environmental standards and regulations.
If welding or flame cutting is required on metal coated with this product, dust and fumes will be generated; use appropriate personal protective equipment and adequate local ventilation.
If in doubt about the suitability of this product for the intended use, consult AkzoNobel for further advice.
| Packaging Specifications | Component A | Component B | ||
| Volume | Packaging | Volume | Packaging | |
| 20 L | 16 L | 20 L | 4 L | |
For other packaging sizes, contact AkzoNobel.
| Packaging Specifications | Component A | Component B |
| 20 L | 32 kg | 4.3 kg |
| Shelf life | Minimum 24 months at 25 °C (77 °F). |
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Thereafter, inspection is required. Store in a dry, cool environment away from heat and sources of ignition.
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Information is subject to the manufacturer's latest version; the manufacturer's latest TDS prevails.
The technical parameters on this page are taken from the product's original manufacturer technical datasheet, the copyright of which belongs to the manufacturer. If a rights holder considers the presentation inappropriate, contact us for verification and handling.
Packaging specifications and batch lead times are subject to actual availability. PleaseContact Uscontact us for project-based calculation.
