Interzinc 2277 Zinc-Rich Primer is a zinc-rich primer. This zinc-rich primer can be used with a wide range of high-performance coating systems and topcoats, for new construction and maintenance projects, including bridges, tanks, pipelines and steel structures. It is a two-component, solvent-borne inorganic zinc silicate zinc-rich primer with fast recoating and fast drying, meeting the requirements of SSPC Paint 20 Level 2. In warm climates (generally above 28 °C (82 °F)), a small amount of thinner may be added for application convenience; International GTA803 thinner is recommended. Parameters on this page: dry film thickness 50-75 µm (2-3 mil), theoretical spreading rate 8.80 m²/L, number of components: two-component.
Parameter source: AKZONOBEL original technical data sheet (TDS) for Interzinc 2277 Zinc-Rich Primer; spreading rate and other values are converted from TDS parameters and provided for product 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 | 66% |
|---|---|
| Dry Film Thickness | 50–75 µm (2–3 mils) |
| Theoretical Spreading Rate | 8.80 m²/L |
| VOC | 3.92 lb/gal (470 g/L) US EPA Method 24 19… |
| Density / Specific Gravity | 2.31 kg/L (19.3 lb/gal) |
| Number of Components | Two-component |
| Thinner | Do not exceed the thinning limits of local environmental regulations |
| Mixing Ratio | 4 parts : 1 part (by volume) |
| Colour / Appearance | Green-grey, INTERZINC 2277 |
For more Q&A on selection, application, acceptance and defect diagnosis, seeFAQsection.
One of the Interzinc 22 series products.
It is a two-component, solvent-borne inorganic zinc silicate zinc-rich primer with fast recoating and fast drying, meeting the requirements of SSPC Paint 20 Level 2.
The zinc dust complies with ASTM D520, Type II.
This zinc-rich primer can be used with a wide range of high-performance coating systems and topcoats, for new construction and maintenance projects, including bridges, tanks, pipelines and steel structures.
Provides excellent corrosion protection for properly prepared steel substrates, and with a suitable topcoat withstands temperatures up to 540 °C.
As a fast-curing primer, it can be used under a wide range of climatic conditions.
| Colour | Green-grey, INTERZINC 2277 |
|---|---|
| Gloss | Matt |
| Volume Solids | 66% |
| Typical thickness | Dry film thickness 50-75 µm (2-3 mil), equivalent to wet film thickness 76-114 µm (3-4.6 mil) |
| Theoretical Spreading Rate | At 75 µm dry film thickness and the stated volume solids, 8.80 m²/L; at 3 mil dry film thickness and the stated volume solids, 353 ft²/US gal |
| Practical Spreading Rate | Allowing for a suitable loss factor |
| Application Methods | Suitable for airless spray, air spray. Drying time; recommended topcoat recoat interval |
| Temperature | Surface Dry | Hard Dry | Minimum | Maximum |
| 5°C (41°F) | 30 min | 3 h | 18 h | Unlimited¹ |
| 15°C (59°F) | 20 min | 1.5 h | 9 h | Unlimited¹ |
| 25°C (77°F) | 10 min | 1 h | 4.5 h | Unlimited¹ |
| 40°C (104°F) | 5 min | 30 min | 1.5 h | Unlimited¹ |
¹ See Definitions and Abbreviations from the International Paint Protective Coatings division. The drying times above are measured at the stated temperatures and 55% relative humidity; at 5 °C they are measured at 60% relative humidity. Before recoating, confirm the film resistance reaches rating 4 by the ASTM D4752 MEK rub test. For recoat details, see the Product Characteristics section.
| Flash point (typical) | Component A 13 °C (55 °F); mixed 13 °C (55 °F) |
|---|---|
| Product weight | 2.31 kg/L (19.3 lb/gal) |
| Volatile Organic Compounds | 3.92 lb/gal (470 g/L) US EPA Method 24; 192 g/kg EU Solvent Emissions Directive content (EU Council Directive 2010/75/EU). For further details, see the section on Product Characteristics. |
All surfaces to be coated must be clean, dry and free of contaminants. Before application, all surfaces must be assessed and prepared in accordance with ISO 8504:2000. Remove oil and grease in accordance with the SSPC-SP1 solvent cleaning standard.
Blast cleaning: abrasive blast clean to Sa 2½ (ISO 8501-1:2007) or SSPC-SP6 (blast to SSPC-SP10 for optimum performance). If oxidation has occurred between blast cleaning and application of Interzinc 2277, the surface must be re-blasted to the specified visual standard.
Surface defects exposed during abrasive blasting must be ground, filled or treated by a suitable method.
Recommended surface roughness 40–75 µm (1.5–3.0 mils).
Shop-primed steel: Interzinc 2277 is suitable for application to steel freshly coated with zinc silicate shop primer.
If the zinc dust shop primer shows large-scale scattered breakdown or heavy zinc salts, the entire area must be fully sweep blasted.
Not suitable for recoating other types of shop primer; remove them completely by abrasive blasting.
Welds and damaged areas must be blast cleaned to Sa 2½ (ISO 8501-1:2007) or SSPC-SP6.
Damaged/repair areas: all damaged areas should be blast cleaned to Sa 2½ (ISO 8501-1:2007) or SSPC-SP6. However, small areas may be cleaned with power tools to Pt3 (JSRA SPSS:1984) or SSPC-SP11, provided the area is not polished. Then, apply the recommended epoxy zinc dust primer to
| repair the area | - Consult International Paint for specific advice. |
|---|
| Mixing | Interzinc 2277 is supplied in two containers: liquid base (Component A) and zinc dust (Component B). The zinc dust (Component B) should be slowly added to the liquid base (Component A) under mechanical agitation. Never add the liquid base to the zinc dust. The paint should be strained before application, and the paint in the container should be stirred continuously during spraying. Once mixed, the paint must be used within the specified pot life. |
|---|---|
| Mixing ratio | 4 parts : 1 part (by volume) |
| Pot life | 5°C (41°F) | 15°C (59°F) | 25°C (77°F) | 40°C (104°F) |
| 12 h | 8 h | 4 h | 2 h |
| Suitable for airless spray | Recommended: nozzle diameter 0.38–0.53 mm (15–21 thousandths of an inch); total paint pressure at the nozzle not less than 112 kg/cm² (1593 psi) |
|---|
| Air Spray | Recommended | Spray gun | DeVilbiss MBC or JGA |
| Air nozzle | 704 or 765 | ||
| (with pressure pot) | Spray painting | E | |
| Brush | Applicable — for small-area repair only | Typical thickness 25–50 µm (1.0–2.0 mils) | |
| Roller application | Not recommended | ||
| Thinner | International GTA803 (or | Do not exceed the thinning limits of local environmental regulations |
GTA 415)
| Cleaner | International GTA803 or International GTA415 |
|---|---|
| Interruption of work | Do not leave paint in hoses, spray guns or spray equipment. Flush all equipment thoroughly with International thinner. Once mixed, paint should not be resealed; if work is interrupted for too long, mix a fresh batch. |
| Cleaning | All equipment should be cleaned immediately after use with International GTA 803. 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. |
All surplus paint and empty containers must be disposed of in accordance with the appropriate local laws/regulations.
Before recoating, the product must be clean, dry and free of soluble salts and excessive zinc corrosion products.
The surface temperature must always be maintained at least 3 °C (5 °F) above the dew point.
When applying Interzinc 2277 in confined spaces, ensure adequate ventilation.
In warm climates (generally above 28 °C (82 °F)), a certain amount of thinner may be added for ease of application; International GTA803 is recommended.
Before recoating, perform a solvent rub test in accordance with ASTM D4752. A rating of 4 indicates satisfactory cure for recoating.
If the relative humidity is below 55%, curing is hindered. Humidity can be increased with steam or water spray, but adding a low-humidity curing accelerator* is more effective. Recoat times at 15 °C (59 °F) are as follows;
| Relative humidity (%) | 20 | 30 | 40 |
| Minimum recoat interval | 24 h | 10 h | |
The Interzinc 2277 application guide contains further information on expected curing times at low relative humidity.
Excessive film thickness or over-application of Interzinc 2277 will cause cracking. If cracking occurs, the affected areas must be completely removed by blasting and then recoated in accordance with the original coating system.
Apply with care to avoid dry film thickness exceeding 125 µm (5 mils).
For high-temperature service, the dry film thickness of Interzinc 2277 should be limited to 50 µm. Without a topcoat, Interzinc 2277 withstands a continuous dry temperature of 400 °C; however, when used as a primer for Intertherm 50, it withstands a dry temperature of 540 °C.
Untopcoated Interzinc 2277 is not suitable for exposure to acidic or alkaline environments or for prolonged immersion in water.
Note: VOC values are typical and for guidance only. They may vary with colour and general production tolerances.
Although the low-molecular-weight reactive additive becomes part of the film when cured under normal ambient conditions, analysis by EPA Method 24 shows that it also affects the VOC value.
*Available only in Europe, China, the Middle East, Africa and Russia.
When Interzinc 2277 needs to be overcoated with itself due to low dry film thickness, the coating surface must be fresh and unweathered. A subsequent coat of Interzinc 2277 with a minimum dry film thickness of 50 µm (2 mil) is required to ensure proper film formation.
Before overcoating with the recommended topcoat, ensure that Interzinc 2277 has fully cured (see above). If weathering has occurred, wash with fresh water to remove all zinc salts from the surface, scrubbing with a bristle brush if necessary.
Typical compatible topcoats and intermediate coats are:
| Intercure 200 | Intergard 475HS |
|---|---|
| Intercure 420 | Interseal 670HS |
| Intergard 251 | Intergard 269 |
| Intertherm 50 | In some cases, Interplus 356 requires a mist coat of suitable viscosity to reduce bubbling. This depends on the degree of ageing of Interzinc 2277, the surface roughness, and the environmental conditions during curing and application. In addition, an epoxy sealer such as Intergard 269 can also be used to reduce bubbling. |
For other suitable topcoats/intermediate coats, 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 |
|---|---|
| • Interzinc 2277 | The content of the Application Guide sections is available as separate copies on request |
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 | |
| 16.8 L | 13.44 L | 15 L | 3.36 L | 20 L |
For other packaging sizes, contact AkzoNobel.
Shipping weight may vary by place of supply; for details, consult International Paint.
| Shelf life | At least 12 months at 25 °C (77 °F). |
|---|
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.
