Interdur 8842 Fast-drying Epoxy is an epoxy paint. The addition of flake mica iron oxide pigment enhances the barrier effect and improves the long-term recoatability of the coating system, making it an ideal product for application at the fabrication plant before shipment and final recoating on site. A two-component, high-solids, low-VOC mica iron oxide coating formulated with proprietary polymer technology that cures and recoats quickly even at low temperatures. Low-temperature curing: Interdur 8842 can cure below 0 °C (32 °F). Parameters on this page: dry film thickness 100–150 µm (4–6 mils), theoretical spreading rate 5.60 m²/L, components two-component.
Data source: AKZONOBEL original Technical Data Sheet (TDS), "Interdur 8842 Fast-drying Epoxy"; spreading rate and other values are converted from the TDS parameters, 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% |
|---|---|
| Dry Film Thickness | 100–150 µm (4–6 mils) |
| Theoretical Spreading Rate | 5.60 m²/L |
| VOC | 2.79 lb/gal (335 g/L) US EPA Method 24 30… |
| Density / Specific Gravity | 1.64 kg/L (13.7 lb/gal) |
| Number of Components | Two-component |
| Thinner | Do not exceed the thinning limits of local environmental regulations |
| Mixing Ratio | 3 parts : 1 part (by volume) |
| Gloss | Matt |
For more Q&A on selection, application, acceptance and defect diagnosis, seeFAQsection.
A two-component, high-solids, low-VOC micaceous iron oxide coating formulated with dedicated polymer technology that cures and overcoats rapidly even at low temperatures.
As a high-build intermediate coat and part of a high-performance coating system, it provides excellent barrier protection and is suitable for various aggressive environments, including offshore installations, bridges, chemical and petrochemical plants, power stations, paper mills and industrial buildings.
May be applied directly as a barrier coating on steel in non-aggressive environments.
The incorporation of lamellar micaceous iron oxide pigment enhances the barrier effect and the long-term overcoatability of the coating system, making the product ideal for application at the fabrication shop before shipment and final overcoating on site.
The fast curing and recoatability of Interdur 8842 provide flexibility for production, making it a coating suitable for new construction and on-site maintenance.
INTERDUR colour light grey mica iron oxide 8842
| Gloss | Matt |
|---|---|
| Volume Solids | 70% |
| Typical thickness | Dry film 100–150 µm (4–6 mils), equivalent to wet film 143–214 µm (5.7–8.6 mils) |
| Theoretical Spreading Rate | At 125 µm dry film thickness and the stated volume solids: 5.60 m²/L; at 5 mils dry film thickness and the stated volume solids: 225 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 (41°F) | 75 min | 7 h | 5 h | Unlimited¹ |
| 15°C (59°F) | 50 min | 4 h | 3 h | Unlimited¹ |
| 25°C (77°F) | 40 min | 2 h | Unlimited¹ | |
| 40°C (104°F) | 30 min | 1 h | Unlimited¹ | |
¹ See Definitions and Abbreviations from the International Paint Protective Coatings division.
| Flash point (typical) | Component A 29 °C (84 °F); Component B 26 °C (79 °F); mixed 27 °C (81 °F) |
|---|---|
| Product weight | 1.64 kg/L (13.7 lb/gal) |
| Volatile Organic Compounds | 2.79 lb/gal (335 g/L) US EPA Method 24 303 g/L China National Standard GB 23985. For more details, see the "Product Characteristics" section |
All surfaces to be coated must be clean, dry and free of contamination. Before painting, all surfaces must be assessed and prepared in accordance with GB 18839-2002.
Oil and grease must be removed in accordance with the SSPC-SP1 solvent cleaning standard.
Blast clean to Sa 2.5 (GB 8923-1:1998). If the steel surface oxidizes after blasting before Interdur 8842 is overcoated, the surface shall be re-blasted to the specified visual surface.
Surface defects exposed by abrasive blasting must be ground, filled or treated by another suitable method.
Recommended angular surface profile of 50–75 µm (2–3 mils).
Pre-primed surfaces: all primers suitable for Interdur 8842 shall be applied on surfaces blasted to Sa 2.5 (GB 8923-1:1998); a surface roughness of 50–75 µm is recommended. Substrates pre-primed with shop primer: welds and damaged areas shall be grit blasted to Sa 2.5 (GB 8923-1:1998). If the shop primer shows extensive or scattered loss, full sweep blasting may be needed. If the shop primer is applied on a blasted surface, full sweep blasting with steel grit must be carried out before applying Interdur 8842.
Substrates pre-primed with zinc powder primer: before applying Interdur 8842, ensure the primer surface is clean, dry and free of any contaminants and zinc salts. Before recoating, ensure the zinc powder primer is fully cured.
If the zinc powder primer is applied on a surface blasted with steel shot, full sweep blasting must be carried out before applying Interdur 8842.
| 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. |
|---|
(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 | 3 parts : 1 part (by volume) |
|---|
| Pot life | 5°C (41°F) | 15°C (59°F) | 25°C (77°F) | 40°C (104°F) |
| 6 h | 4 h | 2 h | 45 min |
| Suitable for airless spray | Recommended: nozzle diameter 0.43–0.53 mm (17–21 thousandths of an inch); total paint pressure at the nozzle not less than 176 kg/cm² (2503 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 75 µm (3.0 mils) | |
| Roller application | Applicable — for small-area repair only | Typical thickness 50–75 µm (2.0–3.0 mils) | |
| Thinner | International GTA220 | Do not exceed the thinning limits of local environmental regulations | |
| (or International |
GTA415)
| Cleaner | Use a cleaning solvent that complies with local regulations. Consult the local representative for specific recommendations. |
|---|---|
| Interruption of work | Do not leave paint in hoses, spray guns or spray equipment. Flush all equipment thoroughly with International thinner. |
Mixed paint should not be resealed. If work is interrupted for too long, mix a fresh batch of paint 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. |
|---|
Surplus paint and empty containers must be disposed of in accordance with the relevant regional regulations.
Low-temperature curing: Interdur 8842 can cure below 0 °C (32 °F). However, this product should not be applied at 0 °C (32 °F), because there may be ice on the substrate.
For details of curing times and recoatability, contact International Paint.
This product must be thinned only with the recommended International thinner. Other thinners, especially those containing ketones, severely inhibit the curing of the coating.
The temperature of the surface to be coated must be at least 3 °C (5 °F) above the dew point.
Like all epoxy resin paints, Interdur 8842 will chalk and fade when exposed to the atmosphere. However, this phenomenon does not affect anti-corrosion performance.
This product is generally used as a transport protection coating before on-site recoating. To ensure maximum recoatability, avoid over-application and keep the surface completely clean and free of contaminants, which may lodge in the profile because of the rough nature of the mica iron oxide pigment.
As with all products with a high micaceous iron oxide content, only darker colours can be formulated; therefore, when using thin-film topcoats in certain colours, two coats may be required to achieve good hiding.
The intercoat adhesion on aged Interdur 8842 is somewhat reduced compared with adhesion on fresh coating, but still meets the needs of the specified use.
Note: VOC values are typical and for guidance only. They may vary with colour and general production tolerances.
Consult International Paint for specific information on the application of pre-construction primers.
The following primers can be used with Interdur 8842: Interdur 8801, Interdur 8802, Interdur 8815. The following topcoats are recommended for use with Interdur 8842: Interdur 8860, Interdur 8862. For other suitable primers/topcoats, consult International Protective Coatings.
For details, see the relevant product data sheet
| 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. |
|---|
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, consult AkzoNobel Protective Coatings for further advice.
| Packaging Specifications | Component A | Component B | ||
| Volume | Packaging | Volume | Packaging | |
| 20 L | 15 L | 20 L | 5 L | |
For other packaging sizes, contact AkzoNobel Protective Coatings.
| Packaging Specifications | Component A | Component B |
| 20 L | 29.7 kg | 5.2 kg |
| 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. |
|---|
The information given in this product data sheet is not exhaustive. Anyone who uses, for any purpose, any product other than those specifically recommended in this data sheet without first obtaining our written confirmation does so at their own risk as regards the suitability of the product for the intended purpose. Although to the best of our knowledge all advice or statements given about the product (whether in this data sheet or otherwise) are correct, we cannot control the quality or condition of the substrate, nor the many factors affecting the use and application of the product. Accordingly, unless we specifically agree otherwise in writing, we accept no liability, to the maximum extent permitted by law, for any product performance problem arising, or for any loss or damage caused by use of the product. We hereby disclaim any warranty or representation, express or implied, arising by operation of law or otherwise, including but not limited to any implied warranty of merchantability or fitness for a particular purpose. All products supplied and all technical guidance provided are subject to our standard terms and conditions of sale. You should obtain a copy of this document and read it carefully. The information contained in this product data sheet may be amended at any time in the light of experience and of our product development policy. Before using the product, it is the customer's responsibility to check with the local representative that the data sheet in their possession is the latest version.
This product data sheet is available on www.international-marine.com or www.international-pc.com and should be identical to this copy. If the version on the website differs from this one, the version on the website shall prevail.
©2021/3/1 AkzoNobel. All rights reserved.
www.international-pc.com
Data is subject to the manufacturer's latest version; in all cases the manufacturer's latest TDS prevails.
Packaging specifications and batch lead times are subject to actual availability. PleaseContact Uscontact us for project-based calculation.
