Hardtop Clear WF Waterborne Polyurethane Clear Coat is a waterborne coating used as a topcoat. Industrial protective coatings segment: recommended for steel structures and various equipment, including but not limited to engines, machinery, railway passenger cars and special vehicles. It provides excellent appearance as a clear coat within a complete waterborne system. Parameters on this page: volume solids 45 ± 2%, dry film thickness 30–70 µm, theoretical spreading rate 10–4.8 m²/L. Comparable products of the same brand: Hardtop E99 WF HG Waterborne Polyurethane High Gloss Topcoat HG, Hardtop E99 WF Waterborne Polyurethane High Gloss Topcoat, Hardtop Express WFL Waterborne Polyurethane Matt Topcoat.
Parameter source: JOTUN manufacturer's Technical Data Sheet (TDS) "Hardtop Clear WF Waterborne Polyurethane Clear Coat"; 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 | 45 ± 2% |
|---|---|
| Dry Film Thickness | 30–70 µm |
| Theoretical Spreading Rate | 10–4.8 m²/L |
| VOC | 298 g/L (China) |
| Density / Specific Gravity | 1.1 kg/L |
| Number of Components | Two-component |
| Flash Point | 98 °C |
| Thinner | Deionised water |
| Mixing Ratio | 2.5 parts : 1 part (by volume) |
For more Q&A on selection, application, acceptance and defect diagnosis, seeFAQsection.
Hardtop Clear WF
This is a waterborne two-component chemically cured aliphatic acrylic polyurethane coating. It is a general-purpose outdoor product. It is a high-gloss topcoat with high gloss retention and good chemical resistance. It provides a high-quality appearance as a clearcoat within a complete waterborne system.
Industrial protective coatings:
Recommended for steel structures and various equipment, including but not limited to engines, machinery, railway coaches and special vehicles.
Others
Colourless
| Property | Test / Standard | Description |
| Volume Solids | ISO 3233 | 45± 2 % |
| Gloss (GU 60°) | ISO 2813 | High gloss (85+) |
| Flash Point | ISO 3679 Method 1 | 98 °C |
| Density | Theoretical Value | 1.1 kg/L |
| Region | Regulations | Test / Standard | VOC Value |
| China | GB 30981-2020 Limit of harmful substances of industrial protective coatings | GB/T 23985-2009 8.4 | 298 g/L |
The data listed are based on factory batch production and may vary slightly with colour.
| Gloss description | According to JOTUN's definition of functional coatings |
|---|
Typical recommended specification range
| Dry Film Thickness | 30–70 µm |
| Wet Film Thickness | 100 – 175 µm |
| Theoretical Spreading Rate | 10–4.8 m²/L |
Surface Preparation
| Substrate | Minimum | Recommended |
| Coated surface | A clean, dry and sound compatible primer. | |
This product may be applied by the following methods
| Spray | Use conventional spray. |
|---|
| Hardtop Clear WF Comp A — Water-Borne Polyurethane Clear Coat | 2.5 parts |
| Hardtop Clear WF Comp B — Water-Borne Polyurethane Clear Coat | 1 part |
| Thinner | Deionised water |
|---|
Metal ions in tap water may cause early anti-corrosion failure.
| Nozzle tip size: | 1.2-2.0 |
| Nozzle pressure (minimum): | 2.1 bar / 30 psi |
| Substrate Temperature | 10 °C | 23 °C | 40 °C |
| Touch Dry | 4 h | 2 h | 1 h |
| Walk-on Dry | 24 h | 10 h | 3 h |
| Minimum recoat interval | 24 h | 10 h | 3 h |
For the maximum recoat interval, refer to the Application Guide (AG) for this product.
Drying and curing times are determined based on temperature and relative humidity below 85%, with dry film thickness within the average range.
After flash-off, the product may be force-dried at temperatures up to 60 °C.
| Walk-on Dry | 1 h |
|---|
Minimum flash-off time at the substrate temperature.
10 °C: 1.5 h; 23 °C: 45 min; 40 °C: 30 min. The minimum flash-off time is the minimum time required before drying, to allow moisture to evaporate.
| Touch Dry | The state at which light finger pressure leaves no mark or stickiness. |
|---|---|
| Walk-on Dry | The minimum time after which the coating allows normal foot traffic without leaving permanent footprints, marks or other physical damage. |
Minimum recoat interval after drying: the recommended minimum interval before applying the next coat.
| Paint temperature | 23 °C |
| Pot Life | 2 h |
If the pot life is exceeded, discard the remainder in the can even when the viscosity shows no obvious change, to avoid impairment of the long-term coating performance.
Temperature
| Continuous | Peak | |
| Drying, atmospheric | 120°C | 150 °C |
Withstands peak temperatures for a maximum of one hour.
At the above temperatures, protective performance is unaffected, but appearance may be affected.
Depending on the actual exposure conditions in service, this product may be used with various primers and topcoats. Some reference systems are listed below. For specific systems, contact JOTUN.
| Previous Coat | Epoxy, polyurethane |
|---|
| Volume | Container Size | |
| (L) | ||
| Hardtop Clear WF Comp A — Water-Borne Polyurethane Clear Coat | 6 | 10 |
| Hardtop Clear WF Comp B — Water-Borne Polyurethane Clear Coat | 2.4 | 3 |
The packaging sizes above are typical reference sizes for factory batch production. Due to regional regulatory differences, packaging sizes and capacities may vary by region.
Store in accordance with national regulations. Keep containers in a dry, cool, well-ventilated place away from heat and sources of ignition. Keep containers tightly closed. Handle with care.
Protect from frost during transport and storage. Recommended storage temperature 5 °C to 35 °C.
| Hardtop Clear WF Comp A — Water-Borne Polyurethane Clear Coat | 12 months |
| Hardtop Clear WF Comp B — Water-Borne Polyurethane Clear Coat | 12 months |
In some markets, the stated shelf life may be shortened to comply with local legal requirements. The above is the minimum shelf life; thereafter, testing is required to confirm quality remains acceptable.
For professional use only. Applicators and workers must be trained, experienced, capable and equipped to mix, stir and apply the coating correctly in accordance with JOTUN's technical documents. Applicators and workers must wear appropriate personal protective equipment when using this product. This guidance is provided based on current product knowledge. Any proposed modification to suit site conditions must be approved by the responsible JOTUN representative before use.
Read the safety warnings on the container packaging. Use in well-ventilated conditions. Avoid inhaling spray mist and avoid skin contact. In case of accidental splashes on skin, wash immediately with a suitable cleaner, soap and water. In case of eye contact, rinse thoroughly with water and seek medical attention immediately.
When used primarily as a primer or antifouling coating, products may show slight colour variation from batch to batch. Such products, and epoxy products used as topcoats, may chalk when exposed to sunlight.
Gloss and colour retention of topcoats depend on the colour type, the surrounding environment such as temperature and UV intensity, application quality and product type. Contact your local JOTUN office for further information.
The information in this datasheet is based entirely on knowledge gained in our laboratory and in practice. JOTUN products are regarded as semi-finished products, and their use is generally beyond our control. JOTUN therefore guarantees only the quality of the product itself. To comply with local regulations, the product may be adjusted, and we reserve the right to modify the datasheet without further notice.
Users should consult JOTUN for specific guidance on the suitability of the product for their requirements and applications.
In case of any discrepancy between language versions, the English (UK) version shall prevail.
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.
