Interdur 8808 Epoxy Zinc-rich Primer is a zinc-rich primer in the epoxy system. As a zinc-rich primer forming part of a coating system, it provides corrosion protection for steel substrates in various industrial environments, including high-value infrastructure projects, offshore equipment, petrochemical and chemical plants, pulp and paper mills, refineries and bridges. A two-component, metallic zinc-rich epoxy primer complying with the composition and performance requirements of SSPC Paint 20 and HG/T 3668, designed for fast curing at low temperature. Note: VOC values are typical values for guidance only. Parameters on this page: volume solids 65% ± 2%, dry film thickness 50–100 µm (2–4 mil), theoretical spreading rate 9.29 m²/L.
Source: AkzoNobel original technical data sheet (TDS) "Interdur 8808 Epoxy Zinc-rich Primer"; spreading rate and other values 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 | 65% ± 2% |
|---|---|
| Dry Film Thickness | 50–100 µm (2–4 mils) |
| Theoretical Spreading Rate | 9.29 m²/L |
| VOC | 2.78 lb/gal (334 g/L) US EPA Method 24 24… |
| Density / Specific Gravity | 1.8 kg/L (15.0 lb/gal) |
| Number of Components | Two-component |
| Thinner | Normally no thinning is required |
| Mixing Ratio | 4 parts : 1 part (by volume) |
| Gloss | Matt |
For more Q&A on selection, application, acceptance and defect diagnosis, seeFAQsection.
A two-component, metallic zinc-rich epoxy primer complying with the composition and performance requirements of SSPC Paint 20 and HG/T 3668, designed for fast curing at low temperature.
As a zinc-rich primer forming part of a coating system, providing corrosion protection for steel substrates in various industrial environments (including high-value infrastructure projects, offshore installations, petrochemical and chemical plants, pulp and paper mills, refineries and bridges).
INTERDUR colour grey 8808
| Gloss | Matt |
|---|---|
| Volume Solids | 65% ± 2% |
| Typical thickness | DFT 50–100 µm (2–4 mil) corresponds to WFT 77–154 µm (3.1–6.2 mil) |
| Theoretical Spreading Rate | At 70 µm dry film thickness and the stated volume solids, 9.29 m²/L; at 2.8 mil dry film thickness and the stated volume solids, 372 ft²/US gal |
| Practical Spreading Rate | Allowing for a suitable loss factor |
| Application Methods | Suitable for airless spray, brush, roller. Drying time; recommended topcoat recoat interval |
| Temperature | Surface Dry | Hard Dry | Minimum | Maximum |
| 5°C (41°F) | 90 min | 4 h | 8 h | Unlimited¹ |
| 15°C (59°F) | 60 min | 3 h | 4 h | Unlimited¹ |
| 25°C (77°F) | 30 min | 2 h | 3 h | Unlimited¹ |
| 40°C (104°F) | 15 min | 60 min | 2 h | Unlimited¹ |
¹ See Definitions and Abbreviations from the International Paint Protective Coatings division.
| Flash point (typical) | Component A 32 °C (90 °F); Component B 31 °C (88 °F); mixed 31 °C (88 °F) |
|---|---|
| Product weight | 1.8 kg/L (15.0 lb/gal) |
| Volatile Organic Compounds | 2.78 lb/gal (334 g/L) US EPA Method 24. 246 g/L. Chinese national standard GB 23985. Coating hazards: GB 30981.2-S-Pb≤1000-NC. Complies with GB 30981.2-2025. For further 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.
Remove any oil and grease by solvent cleaning in accordance with GB 18839-2002.
Blast cleaning: blast to Sa 2.5 (GB 8923-1:1998). If the steel surface oxidises after blasting and before overcoating with Interdur 8808, the surface shall be re-blasted to the specified visual standard. Surface defects exposed during blasting shall be ground, filled or treated in a suitable manner.
Interdur 8808 is suitable for surfaces initially achieved by blasting as above, then naturally degraded for no more than 7–10 days under good workshop conditions. The surface may degrade to Sa 2, but must be free of loose powdery rust.
Surface defects exposed by abrasive blasting must be ground, filled or treated by another suitable method.
Recommended surface roughness 40–75 µm (1.5–3.0 mils).
Shop-primed steel: Interdur 8808 is suitable for steel members freshly coated with zinc silicate shop primer.
If the zinc-containing shop primer has suffered extensive breakdown, or produced large amounts of zinc salts, a full sweep blast is required.
Welds and damaged areas shall be blast-cleaned to Sa2.5 (GB 8923-1:1988).
Damaged/repaired areas: all damaged areas should preferably be blast cleaned to Sa 2.5 (GB 8923-1:1998); however, power-tool cleaning of small areas to Pt3 or SSPC SP11 is permitted, provided the area is not polished.
| Mixing | This product is supplied in two containers as one unit. Always mix the entire unit in the specified ratio. 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 | 4 parts : 1 part (by volume) |
|---|
| Pot life | 5°C (41°F) | 15°C (59°F) | 25°C (77°F) | 40°C (104°F) |
| 3.5 h | 2.5 h | 1.5 h | 40 min |
| Suitable for airless spray | Recommended: nozzle diameter 0.43–0.53 mm (17–21 mil); total paint pressure at the nozzle not less than 191 kg/cm² (2716 psi). A 9 mm (0.375 in) fluid hose is recommended, maximum length 15 m (49 ft). |
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| Brush | Applicable — for small-area repair only | Typical thickness 25–50 µm (1.0–2.0 mils) |
| Roller application | Typical thickness 25–50 µm (1.0–2.0 mils) | |
| Thinner | International GTA822 | Normally no thinning is required. |
(or GTA 415). In extreme cases, consult the local technical representative.
Do not thin beyond the requirements of local environmental regulations.
| Cleaner | International GTA822 (or GTA 415) |
|---|---|
| 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 shall be cleaned with International thinner immediately after use. Periodic flushing of spray equipment during application is also recommended. The frequency of cleaning depends on the quantity sprayed, temperature and time, including all interruptions. |
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All surplus paint and empty containers must be disposed of in accordance with appropriate local regulations/laws.
Where Interdur 8808 is allowed to weather before topcoating, ensure all zinc salts are removed before painting, and apply the topcoat using recommended materials only.
Where Interdur 8808 needs to be self-overcoated due to low dry film thickness, the coating surface must be fresh and unweathered.
Any subsequent coat of Interdur 8808 requires at least 50 µm (2 mil) dry film thickness to ensure proper film formation.
Excessive film thickness or over-application of Interdur 8808 may lead to increased gloss and reduced performance. In this case, the affected areas shall be completely removed by blasting and re-coated per the application specification.
As good practice, do not apply when the environment deteriorates, e.g. when the temperature is below the dew point or condensation is possible. Dehumidification, air conditioning and/or heating equipment may be required to control the environment.
When applying Interdur 8808 in confined spaces, ensure adequate ventilation.
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.
Recommended topcoats/intermediate coats are: Interdur 8814, Interdur 8840, Interdur 8860, Intergard 475HS. 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. 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 | |
| 10 L | 8 L | 10 L | 2 L | 5 L |
For other packaging sizes, contact AkzoNobel.
| Packaging Specifications | Component A | Component B |
| 10 L | 15.4 kg | 2.3 kg |
| Shelf life | 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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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.
©2026/6/18 AkzoNobel. All rights reserved.
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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.
