Interthane 990E Polyurethane Topcoat belongs to Polyurethane and is used as a topcoat. Interthane 990E is suitable as a new construction and maintenance topcoat, widely used in industrial and commercial projects under various environmental conditions, including manufacturing plants, infrastructure, power industry and oil and gas industry. A two-component solvent-borne, high solids aliphatic acrylic polyurethane topcoat with good application and decorative properties. Ideally, a colour-matched intermediate coat or anti-corrosive coat is applied beneath Interthane 990E. Parameters on this page: volume solids 70% ± 3%, dry film thickness 50–75 µm (2–3 mils), theoretical spreading rate 14 m²/L.
Parameter source: AKZONOBEL original technical data sheet (TDS) 'Interthane 990E Polyurethane Topcoat'; 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 | 70% ± 3% |
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| Dry Film Thickness | 50–75 µm (2–3 mils) |
| Theoretical Spreading Rate | 14 m²/L |
| VOC | 2.58 lb/gal (310 g/L) US EPA Method 24 20… |
| Density / Specific Gravity | 1.49 kg/L (12.4 lb/gal) |
| Number of Components | Two-component |
| Thinner | Do not exceed the thinning limits of local environmental regulations |
| Mixing Ratio | 8 parts : 1 part (by volume) |
| Colour / Appearance | A wide range of colours can be produced through the Chromascan tinting system |
For more Q&A on selection, application, acceptance and defect diagnosis, seeFAQsection.
A two-component solvent-borne, high-solids aliphatic acrylic polyurethane topcoat with good application properties and decorative properties. When a durable and visually attractive topcoat is required, Interthane 990E is an ideal choice.
Interthane 990E is suitable as a new construction and maintenance topcoat, widely used in industrial and commercial projects under various environmental conditions, including manufacturing plants, infrastructure, power industry and oil and gas industry. As part of a protective coating system, Interthane 990E can be applied over suitable primers, intermediate coats or fire protection coating systems, providing excellent performance and appearance, with high gloss and low VOC content.
| Colour | A wide range of colours can be produced through the Chromascan tinting system. |
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INTERTHANE 990E
| Gloss | High gloss |
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| Volume Solids | 70% ± 3% |
| Typical thickness | Dry film thickness 50–75 µm (2–3 mils) corresponds to wet film thickness 71–107 µm (2.8–4.3 mils) |
| Theoretical Spreading Rate | At 50 µm dry film thickness and the stated volume solids, 14 m²/L. At 2 mils dry film thickness and the stated volume solids, 561 ft²/US gal. |
| Practical Spreading Rate | Allowing for a suitable loss factor |
| Application Methods | Suitable for airless spray, air spray, brush, roller. Drying time; recommended topcoat recoat interval |
| Temperature | Surface Dry | Hard Dry | Minimum | Maximum |
| -5°C (23°F) | 22 h | 68 h | 60 h | Unlimited¹ |
| 5°C (41°F) | 6 h | 24 h | 21 h | Unlimited¹ |
| 15°C (59°F) | 2.5 h | 10 h | Unlimited¹ | |
| 25°C (77°F) | 2 h | 6 h | Unlimited¹ | |
| 40°C (104°F) | 90 min | 4 h | Unlimited¹ | |
¹ See Definitions and Abbreviations from the International Paint Protective Coatings division.
| Flash point (typical) | Component A 26 °C (79 °F); Component B 49 °C (120 °F); Mixed 29 °C (84 °F) |
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| Product weight | 1.49 kg/L (12.4 lb/gal) |
| Volatile Organic Compounds | 2.58 lb/gal (310 g/L) US EPA Method 24 207 g/kg EC Solvent Emissions Directive content 2010/75/EC 284 g/L China National Standard GB 23985 303 g/L Korea Clean Air Conservation Act coating hazard GB 30981.2-S-Pb≤90-C Complies with GB 30981.2-2025. For more detailed information, please see the "Product Characteristics" section. |
All 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 8504-1.
Pre-primed surfaces: Interthane 990E should always be applied over the recommended anti-corrosive primer. The primer surface should be dry and free from any contaminants. Interthane 990E must be applied within the specified recoat interval (refer to the relevant product data sheet).
Areas with cracks, damage, etc. should be prepared to the specified standard (e.g. Sa2½ (ISO 8501-1:2007) or SSPC SP6 abrasive blast cleaning standard, or SSPC SP11 power tool cleaning standard) and the primer repaired before applying Interthane 990E.
| Mixing | This product is supplied in two containers forming one unit. Mix the two components in the specified ratio in one operation. Once mixed, use within the specified pot life. |
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(1) Stir the base (Component A) with a power mixer.
(2) Mix all of the curing agent (Component B) with the base (Component A) and stir thoroughly with a power mixer.
| Mixing ratio | 8 parts : 1 part (by volume) |
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| Pot life | -5°C (23°F) | 5°C (41°F) | 15°C (59°F) | 25°C (77°F) | 40°C (104°F) |
| 3 h | 2.5 h | 2 h | 1.5 h | 1 h |
| Suitable for airless spray | Recommended: nozzle diameter 0.33–0.45 mm (13–18 thousandths of an inch); total paint pressure at the nozzle not less than 155 kg/cm² (2204 psi) |
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| Air Spray | Recommended | Spray gun | DeVilbiss MBC or JGA |
| Air nozzle | 704 or 765 | ||
| (with pressure pot) | Nozzle | E | |
| Air spray (conventional) | Recommended | Use suitable dedicated equipment. | |
| Brush | Suitable | Typical thickness 40–50 µm (1.6–2.0 mils) | |
| Roller application | Suitable | Typical thickness 40–50 µm (1.6–2.0 mils) | |
| Thinner | Do not exceed the thinning limits of local environmental regulations |
| Cleaner | International GTA713 (or International GTA733) |
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| 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 for application.
| 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.
Gloss and surface evenness depend on the application method. Avoid mixing different application methods as far as possible.
Conventional air spray generally gives ideal gloss and appearance.
When applied by brush and roller, for certain colours, two coats of Interthane 990E may be required to achieve a uniform coating, especially when applied over dark primers, or when using certain lead-free bright colours such as yellow and orange. Ideally, a colour-matched intermediate coat or anti-corrosive coat should be used beneath Interthane 990E.
When recoating after weathering or ageing, before applying subsequent Interthane 990E coats, ensure the coating is thoroughly cleaned to remove all surface contaminants, such as oil, grease, crystalline salts and road grime.
The intercoat adhesion applied over aged Interthane 990E is somewhat lower than that applied over a new coating, but still meets the requirements of the specified use.
This product may be thinned only with the recommended International thinner. Other thinners, especially alcohol-containing thinners, severely inhibit the curing mechanism of the coating.
The temperature of the surface to be coated must be at least 3 °C (5 °F) above the dew point.
When applying Interthane 990E in confined spaces, ensure adequate ventilation.
Interthane 990E can cure below 0 °C (32 °F). However, the product should not be applied at 0 °C (32 °F) because ice may form on the substrate. Condensation on the surface during or after application will cause a matt surface and poor film formation. Premature exposure to standing water may cause colour change, especially for dark colours and at low temperatures.
This product is not recommended for immersion service. If severe chemical or solvent splashes are likely, contact International Paint for information on suitability.
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.
The following primers/intermediate coats are recommended for Interthane 990E:
| Chartek 8E | Intercure 200HS | Interseal 1052 |
| Chartek 1709 | Intergard 251HS | Intershield 300 |
| Interchar 1190 | Intergard 2511* | Intershield 4000USP |
| Interchar 2060 | Intergard 269 | Interzone 954 |
| Interchar 1260 | Intergard 345 | Interzone 954GF |
| Interchar 1290 | Intergard 475HS |
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| Interchar 3120* | Interseal 670HS* is only available in some countries. For other suitable primers/intermediate coats, please consult International Paint. |
Interthane 990E is suitable for recoating itself.
| 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.
Warning: contains isocyanates. Wear an air-fed helmet when spraying.
| Packaging Specifications | Component A | Component B | ||
| Volume | Packaging | Volume | Packaging | |
| 20 L | 17.78 L | 20 L | 2.22 L | 5 L |
| 5 L | 4.45 L | 5 L | 0.55 L | 1 L |
For other packaging sizes, contact AkzoNobel.
| Packaging Specifications | Component A | Component B |
| 20 L | 27.2 kg | 2.36 kg |
| 5 L | 7.31 kg | 0.7 kg |
| Shelf life | At 25 °C (77 °F), Component A: 12 months, Component B: 18 months, after which inspection is required. Store in a dry, cool place away from heat sources and ignition sources. |
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All registered trademarks mentioned in this publication are licensed to or owned by AkzoNobel.
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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.
The factory item numbers for Interthane 990E Polyurethane Topcoat are as follows.Item No.is the most accurate form when ordering;Colour/colour codecorresponds to the actual colour (RAL, GSB are colour chart codes);Packaging SpecificationsFactory complete-set specification format. Colors not listed may be ordered against the colour card.
| Item No. | Colour / colour code | Packaging Specifications |
|---|---|---|
| RUL549 | Signal Green | 20 L |
| RUB000 | White | 20 L |
| RUM704 | RAL7037 | 20 L |
| RUC287 | Signal Red | 20 L |
| RUL274 | Red | 20 L |
This model has a total of5item numbers, all listed on this page; colours outside the table (including special colours and bulk packaging) can be confirmed by phone, delivery dates are advised according to the factory's current production schedule and stock. In the packaging specification, the "+" indicates the complete-set notation for two-component products (base + curing agent), subject to the factory specification; a "—" in the colour column denotes an auxiliary product, or that the item has no colour code in the factory system.
