Interplus 356 High-performance Industrial Maintenance Coating is an epoxy coating used as a primer. It is a high-performance industrial maintenance coating suitable for application to a range of different substrate types, including surfaces prepared by hand and power tool cleaning. Low-solvent, two-component, internally plasticized, high-build, low-temperature-curing (minimum -5°C) surface-tolerant epoxy primer. To ensure good ageing recoatability of Interplus 356 when recoated with other coatings, the surface must be clean, dry and free from contaminants, particularly where the surface is rough due to the presence of micaceous iron oxide. Parameters on this page: theoretical spreading rate 5.60 m²/L; number of components: two.
Parameter source: AKZONOBEL manufacturer's Technical Data Sheet (TDS) "Interplus 356 High-performance Industrial Maintenance Coating"; values such as spreading rate are converted according to TDS parameters and are 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 | 70% |
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| Dry Film Thickness | — |
| Theoretical Spreading Rate | 5.60 m²/L |
| VOC | 2.54 lb/gal (305 g/L) US Environmental Protection Agency Method 24 19… |
| Density / Specific Gravity | 1.51 kg/L (12.6 lb/gal) |
| Number of Components | Two-component |
| Thinner | International GTA220 (or low temperature may be required; see product… |
| Mixing Ratio | 3 parts : 1 part by volume |
| Colour / Appearance | Aluminium, grey |
For more Q&A on selection, application, acceptance and defect diagnosis, seeFAQsection.
Low-solvent, two-component, internally plasticized, high-build, low-temperature-curing (minimum -5°C) surface-tolerant epoxy primer. Aluminium flakes and micaceous iron oxide flakes are added to enhance anticorrosive performance.
A high-performance industrial maintenance coating suitable for application to a range of different substrate types, including surfaces prepared by hand and power tool cleaning.
Specially designed for low-temperature conditions or where rapid overcoating is required.
INTERPLUS 356
| Colour | Aluminium, grey |
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| Gloss | Matt |
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| Volume Solids | 70% |
| Typical thickness | 75–125 µm (3–5 mil) dry film thickness, equivalent to 107–179 µm (4.3–7.2 mil) wet film thickness |
| Theoretical Spreading Rate | At 125 µm dry film thickness and the stated volume solids, 5.60 m²/L; at 5 mil dry film thickness and the stated volume solids, 225 ft²/US gal. |
| Practical Spreading Rate | Allowing for a suitable loss factor |
| Application Methods | Airless spray, air spray - blast-cleaned steel; brush, roller - steel prepared by hand and power tools; drying time; recommended topcoat recoat interval |
| Temperature | Surface Dry | Hard Dry | Minimum | Maximum |
| 5°C (41°F) | 8 h | 18 h | 10 h | Unlimited¹ |
| 15°C (59°F) | 2 h | 10 h | 6 h | Unlimited¹ |
| 25°C (77°F) | 90 min | 6 h | 4 h | Unlimited¹ |
| 40°C (104°F) | 45 min | 3 h | 2 h | Unlimited¹ |
¹ See Definitions and Abbreviations from the International Paint Protective Coatings division.
| Flash Point | Component A 44°C (111°F); Component B 27°C (81°F); mixed 40°C (104°F) |
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| Product weight | 1.51 kg/L (12.6 lb/gal) |
| Volatile Organic Compounds | 2.54 lb/gal (305 g/L) US Environmental Protection Agency Method 24 198 g/kg EU Solvent Emissions Directive |
| Content | Commission Directive No. 13 of 1999. For further details, see the "Product Characteristics" section. Ecotech ecological technology was pioneered by International Paint, a company with a leading position in global coating technology, to promote the use of environmentally harmless products worldwide. |
The performance of this product depends on the degree of surface preparation. Surfaces to be painted must be clean, dry and free of contaminants. Before painting, all surfaces must be assessed and prepared in accordance with ISO 8504:2000.
Accumulations of dirt and soluble salts must be removed. Accumulated dirt is generally removed with a dry bristle brush. Soluble salts should be washed off with fresh water.
Abrasive blast cleaning: Interplus 356 may be applied to surfaces prepared by abrasive blast cleaning to at least Sa1 (ISO 8501-1:2007) with rust grade C or D, or SSPC SP7.
Hand or power tool preparation: clean to St 2 (ISO 8501-1:2007) or SSPC-SP2 minimum.
Note: all mill scale shall be removed; areas not suitably treated by chipping or needle gun shall be spot-blasted to Sa2 (ISO 8501-1:2007) or SSPC SP6 as a minimum. This generally applies to grade C or D rusting.
To achieve ideal performance, steel surfaces with service temperatures up to 100°C shall be prepared to at least St3 (ISO 8501-1:2007) or SSPC-SP3.
Ultra-high-pressure water jetting/wet abrasive blasting may be applied to surfaces prepared to Sa2½ (ISO 8501-1:2007) or SSPC SP6, with flash rust permitted to not less than HB2½M grade (refer to International Paint water jetting standard) or SB2½M grade (refer to International Paint slurry blasting standard). In some cases, application to wet surfaces is also possible.
International Paint can provide further information.
Aged coatings: Interplus 356 is suitable for overcoating most aged coatings. Loose or flaking coatings shall be removed until sound film edges are exposed. Smooth epoxy or polyurethane coatings may require abrasion.
| Mixing | This product is supplied in two cans as one unit. The components shall be mixed in the specified ratio as a pair for one-time use. Once mixed, the product must be used within the specified pot life. |
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(1) Stir the base (Component A) with a power mixer.
(2) Mix all the hardener (Component B) with the base (Component A) and stir thoroughly with a power mixer.
| Mixing ratio | 3 parts : 1 part by volume |
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| Pot life | 5°C (41°F) | 15°C (59°F) | 25°C (77°F) | 40°C (104°F) |
| 8 h | 4 h | 2 h | 45 min |
| Airless Spray | Recommended nozzle diameter 0.48–0.58 mm (19–23 mil); total fluid output pressure at the nozzle not less than 211 kg/cm² (3000 psi). |
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| Air spray (pressure pot) | Recommended | Spray gun | DeVilbiss MBC or JGA |
| Air nozzle | 704 or 765 | ||
| Spray painting | E | ||
| Brush | Recommended | Typical thickness 75–100 µm (3.0–4.0 mils) | |
| Roller application | Recommended | Typical thickness 50–75 µm (2.0–3.0 mil). |
| Thinner | International GTA220 (or International GTA415); low temperature may be required; see Product Characteristics. Do not dilute beyond the range permitted by local regulations. |
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| Cleaner | International GTA822 (or International GTA415) |
| Interruption of work | Do not leave coating in hoses, spray guns or spray equipment. Flush all equipment thoroughly with International GTA822. Once a paint batch has been mixed it must not be resealed; if the work is interrupted for an extended period, mixing a fresh batch of paint for application is recommended. |
| Cleaning | All equipment should be cleaned with International GTA 822 immediately after use. Periodic flushing of spray equipment during the working day is good practice. The frequency of cleaning depends on spray volume, temperature, spray time and interruption time, among other factors. |
All surplus paint and empty containers must be disposed of in accordance with the appropriate local laws/regulations.
Good anticorrosive performance requires a minimum system film thickness of 200 µm achieved through multiple coats.
When Interplus 356 is applied by brush or roller, multiple coats are required to achieve the specified total dry film thickness.
Wet Blasted (Damp Surfaces) If salt water is used during wet blasting, the treated surface must be thoroughly washed with fresh water before Interplus 356 is applied. Light flash rusting on a freshly blasted surface is acceptable and is preferable to a surface that is too wet. Pools, standing water and accumulations of water must be removed.
To ensure good ageing recoating characteristics when Interplus 356 is overcoated with other coatings, the surface must be clean, dry and free from contamination, particularly where the surface appears rough due to the presence of micaceous iron oxide.
Low-temperature curing: Interplus 356 can cure below 0°C (32°F). However, the product should not be applied at 0°C (32°F), as ice may be present on the substrate.
Recoat interval with the recommended topcoat
| Temperature | Surface Dry | Hard Dry | Minimum | Maximum |
| -5°C (23°F) | 24 h | 60 h | Unlimited* | |
| 0°C (32°F) | 16 h | 36 h | Unlimited* | |
See "Definitions and Abbreviations" from the International Protective Coatings division. The touch dry times in the table above are chemical reaction curing times, not physical film formation times at temperatures below 0°C.
At low temperatures, Interplus 356 may require thinning to ensure smooth airless spray application. Under normal conditions, addition of 5% (by volume) GTA 220 is sufficient.
Interplus 356 is not designed for continuous immersion in water.
Note: VOC values are typical and are provided for guidance only. These values may vary with colour differences and normal manufacturing tolerances, among other factors.
Interplus 356 is generally applied to bare steel, but is also fully compatible with most aged coatings, including touch-up of the following primers.
| Intercure 200 | Interzinc 12 |
|---|---|
| Intergard 251 | Interzinc 22 |
| Intergard 269 | Interzinc 42 |
| InterH2O 280 | Interzinc 52 |
| Interseal 670HS | Recommended topcoats/intermediate coats for Interzinc 315: |
| Intercure 420 | Interplus 880 |
| Interfine 629HS | Interseal 670HS |
| Intergard 475HS | Interthane 990 |
| Intergard 740 | Interzone 505 |
| Interplus 356 | Interzone 954, Interplus 770. Interplus 356 is not suitable for overcoating thin-film alkyd, chlorinated rubber, vinyl or acrylic topcoats. |
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 | Available in the following documents on the website: • Definitions and Abbreviations • Surface Preparation • Coating Application • Theoretical and Practical Spreading Rates. Separate copies of these sections are available on request. |
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This product is intended for application only by professional applicators in the industrial sector, in accordance with the recommendations in this manual, the Material Safety Data Sheet and on the container packaging. 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 shall be carried out in accordance with the relevant national safety, health and environmental standards and regulations.
If welding or flame cutting is required on metal coated with this product, dust and fumes will be generated, requiring suitable personal protective equipment and adequate local exhaust ventilation.
If in doubt about the suitability of this product, consult International Paint.
| Packaging Specifications | Component A | Component B | ||
| Volume | Packaging | Volume | Packaging | |
| 20 L | 15 L | 20 L | 5 L | |
| 5 US gal | 3 US gal | 5 US gal | 1 US gal | |
For other available packaging sizes, contact International Paint.
| Packaging Specifications | Component A | Component B |
| 20 L | 27.7 kg | 5.3 kg |
| 5 US gal | 56.2 lb | 8.8 lb |
| 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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All products supplied and technical advice provided are subject to our standard terms and conditions of sale. A copy of this document should be obtained and read carefully. The information contained in this product Data Sheet is subject to modification at any time in the light of experience and our policy of continuous product development.
It is the user's responsibility to check with the local International Paint representative that the product Data Sheet held is the latest version before using the product.
www.international-pc.com
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.
