Interstores Polyurethane Topcoat is a polyurethane coating used as a topcoat. Suitable for topsides, exterior superstructures and weather decks. A two-component acrylic polyurethane gloss topcoat. Parameters on this page: volume solids 54% ± 3%, dry film thickness 40 µm, theoretical spreading rate 13.5 m²/L. Same-brand products for comparison: Intergard 723 epoxy semi-gloss topcoat, Interlac 678 alkyd clear varnish, Interstores Alkyd topcoat.
Parameter source: International manufacturer's Technical Data Sheet (TDS) "Interstores Polyurethane Topcoat"; values such as spreading rate are converted from 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 | 54% ± 3% |
|---|---|
| Dry Film Thickness | 40 µm |
| Theoretical Spreading Rate | 13.5 m²/L |
| VOC | 426 g/L (as supplied) (EPA Method 24)346 g/kg(… |
| Density / Specific Gravity | — |
| Number of Components | Two-component |
| Mixing Ratio | Component A : Component B = 8:1 (by volume) |
| Colour / Appearance | ISA210-White, ISA220-Red, ISA230-Green, IS… |
| Gloss |
For more Q&A on selection, application, acceptance and defect diagnosis, seeFAQsection.
A two-component, acrylic polyurethane gloss topcoat.
Decorative topcoat for above-water areas. Suitable for the freeboard, the exterior of superstructures and exposed decks.
For in-service maintenance only.
| Colour | ISA210-White, ISA220-Red, ISA230-Green, ISA240-Wave Grey, ISA250-Grey, ISA260-Black |
|---|---|
| Topcoat/gloss | Gloss |
| Component B (curing agent) | ISA246 |
| Volume Solids | 54% ±3% (ISO 3233:1998) |
| Mixing ratio | Component A : Component B = 8:1 (by volume) |
| Standard film thickness | 40 µm dry film thickness (74 µm wet film thickness) |
| Theoretical Spreading Rate | Theoretical spreading rate 13.5 m²/L at 40 µm dry film thickness; an appropriate loss factor is allowed |
| Application Methods | Brush, Roller |
| Flash Point | Component A 33°C; Component B 39°C; mixed 33°C |
| Drying data | 5°C | 10°C | 25°C | 35°C |
| Touch dry [ISO 9117/3:2010] | 3.5 h | 3 h | 1.5 h | 30 min |
| Hard dry [ISO 9117-1:2009] | 20 h | 18 h | 10 h | 3 h |
| Pot life after mixing | 12 h | 8 h | 2 h | 60 min |
| Recoat data — see the “Limitations” section | Substrate Temperature | |||||||
| 5°C | 10°C | 25°C | 35°C | |||||
| When recoating the following products | Minimum | Maximum | Minimum | Maximum | Minimum | Maximum | Minimum | Maximum |
| Interstores Polyurethane | 20 h Unlimited 18 h Unlimited 10 h Unlimited 3 h Unlimited |
|---|---|
| Note | Drying and recoat times are measured at 40 µm dry film thickness; higher film thickness extends both drying and recoat times. |
| Volatile Organic Compounds | 426 g/L (as supplied) (EPA Method 24) 346 g/kg (as supplied liquid paint). EU Solvent Emissions Directive (Council Directive 1999/13/EC) 420 g/L. China national standard GB23985. The volatile organic compound values are typical values and are provided for reference only. They may change with factors such as colour and normal manufacturing tolerances. |
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Coating hazards GB 30981.2-S-Pb≤1000-NC; complies with GB 30981.2-2025
When used as part of an approved scheme, the coating holds the following certificates: • Fire resistance — complies with the Marine Equipment Directive • Fire resistance — complies with low flame-spread requirements (Exova Warringtonfire) • Fire resistance — smoke and toxicity (Exova Warringtonfire). For details, consult the local International Paint representative.
Interstores Polyurethane must be applied over the recommended primer system; the specific primer varies with the vessel area. Direct application is acceptable over the following marine anticorrosive paints: Interbond 201 ambient type, Interprime 198, Interstores Epoxy Primer. For the coating system most suitable for the surface to be protected, consult the local International Paint representative.
Applied in accordance with the standard Worldwide Marine Specifications.
All surfaces to be coated must be clean, dry and free of contaminants.
Wash with high-pressure or ordinary fresh water as appropriate, and remove all oil, grease, soluble contaminants and other foreign matter in accordance with the SSPC-SP1 solvent cleaning standard.
Maintenance/in-service maintenance. Interstores Polyurethane should always be applied over the recommended primer. The primer surface should be dry and free from all contamination, and Interstores Polyurethane must be applied within the specified recoat interval (refer to the relevant product Data Sheet). Areas of breakdown and damage should be prepared to the specified standard (e.g. Sa2.5 (ISO 8501-1:2007)) and primed before application of Interstores Polyurethane.
Interstores Polyurethane may be applied directly to existing Interstores Polyurethane coatings after thorough fresh water washing and degreasing, provided the coating to be overcoated is intact and firmly adhering. Loose or flaking coating should be removed to a firm edge and the area repaired with Interstores Polyurethane or a suitable primer before application of the full coat.
The product may be applied directly over most generic paint types that have a coating age of at least 3 months. A patch test is recommended before application of the full coat.
For specific advice, consult your local International Paint representative.
Note: for the marine environment in North America, the following surface preparation standard may be used: SSPC-SP10 in place of Sa 2.5 (ISO 8501-1:2007)
The coating is supplied in two containers as one unit. Always mix the entire unit in the supplied ratio.
(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.
International GTA056, GTA713, GTA733. Thinning is normally not required. Under extreme conditions, consult the local representative for application advice. Do not thin beyond the limits permitted by local environmental regulations.
Not recommended.
Suitable.
Thoroughly flush all equipment with International GTA056/GTA713/GTA733. Once a paint unit has been mixed it should not be resealed; if application is interrupted for an extended period, remixing the components before continuing application is recommended.
All equipment should be cleaned with International GTA056/GTA713/GTA733 immediately after use. All remaining paint and empty containers should be disposed of in accordance with applicable local regulations/laws.
If welding or flame cutting is performed on metal coated with this product, dust and fumes will be released; use suitable personal protective equipment and local exhaust ventilation. In North America, follow the instructions in ANSI/ASC Z49.1 “Safety in Welding and Cutting”.
All work related to the application and use of this product must comply with national health, safety and environmental protection standards and regulations.
Before using this product, obtain, read and follow the health and safety information in the Material Safety Data Sheet for the product. Read and observe all precautions in the Material Safety Data Sheet and on the container label. If these warnings and requirements are not fully understood, or cannot be strictly observed, do not use the product. During application and drying of the product, provide adequate ventilation and protective measures to keep solvent vapour concentrations within safe limits, so as to prevent poisoning or oxygen deficiency. Take protective measures to avoid skin and eye contact with the product (e.g. gloves, goggles, face shield, barrier cream). Specific safety measures depend on the application method and working environment.
Emergency contact: USA/Canada — medical 1-800-854-6813; Europe — tel. (44) 191 4696111, hospital and doctor (44) 207 6359191; China — tel. (86) 532 83889090; other regions — contact the regional office.
The product is not recommended for immersion service.
When applied by brush and roller, some colours may require two coats of Interstores Polyurethane to ensure uniform coverage, particularly when Interstores Polyurethane is applied over a dark-coloured previous coat. Ideally, an intermediate coat or anticorrosive coat of similar colour is used beneath Interstores Polyurethane.
Low temperature, high relative humidity and condensation during or immediately after application may result in a flat film and poor performance. Premature exposure to surface water pooling may cause discolouration, particularly with dark colours and at low temperatures.
Recoat data are for guidance only and depend on local climatic and environmental conditions. For specific advice, consult your local International Paint representative.
Apply in good weather. The temperature of the surface to be coated must be at least 3 °C above the dew point. Unless otherwise specifically instructed, raise the paint temperature to between 21 and 27 °C before mixing and application to achieve optimum application performance. Unmixed paint (in sealed containers) must be stored protectively as specified in the Storage section of this product data sheet. The technical and application data given here are intended as general guidance for establishing an application procedure. Test results are obtained in a controlled laboratory environment, and International Paint does not claim that the published test results, or any other test results, accurately represent results obtained in all site environments. Because application, environmental and design parameters vary widely, care must be exercised in coating selection, performance verification and use.
In the Recoat Data section, unlimited = 'ext'. See the Marine Painting Guide — Definitions and Abbreviations available on our website.
| Packaging Specifications | Component A | Component B | ||
| Volume | Packaging | Volume | Packaging | |
| 20 L | 17.78 L | 20 L | 2.22 L | 2.5 L |
| 5 US gal | 4.44 US gal | 5 US gal | 0.56 US gal | 1 US gal |
Note: US containers are slightly underfilled. For other packaging sizes, consult International Paint.
| Packaging Specifications | Packaging weight |
|---|---|
| 20 L | 25.4 kg |
| 5 US gal | 52.25 lb |
| Shelf life | 18 months at 25 °C. Thereafter, re-inspection is required. Store in a dry, sheltered place 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.
