Jotatop BC300 WF Waterborne Universal Polyurethane Blade Coating BC300 is a waterborne coating. Industrial protective coatings: specifically designed for the protection of wind turbine blades. Suitable for application over glass-flake-reinforced epoxy and polyester coatings. Parameters on this page: volume solids 54 ± 2%, dry film thickness 40-80 µm, theoretical spreading rate 13.3-6.6 m²/L. Comparable models from the same brand: Jotun Accelerator WB PU waterborne polyurethane accelerator, Hardtop Clear WF waterborne polyurethane clearcoat, Hardtop E99 WF HG waterborne polyurethane high-gloss topcoat HG.
Parameter source: JOTUN original technical data sheet (TDS) for Jotatop BC300 WF Waterborne Universal Polyurethane Blade Coating BC300; spreading rate and other values are converted from TDS parameters and provided 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 ± 2% |
|---|---|
| Dry Film Thickness | 40–80 µm |
| Theoretical Spreading Rate | 13.3–6.6 m²/L |
| VOC | 94 g/L (China) |
| Density / Specific Gravity | 1.4 kg/L |
| Number of Components | Two-component |
| Flash Point | 101 °C |
| Thinner | Deionised water |
| Mixing Ratio | 11.1 parts : 1 part (by weight) |
For more Q&A on selection, application, acceptance and defect diagnosis, seeFAQsection.
Jotatop BC300 WF
It is a two-component waterborne polyurethane coating. It has excellent abrasion resistance, flexibility, colour retention and gloss retention. It is used as a topcoat in atmospheric environments. It can be applied alone. Suitable for application over glass-flake-reinforced epoxy and polyester coatings.
Industrial protective coatings:
Specifically designed to protect wind turbine blades.
Others
RAL 7035, RAL 3020, RAL 2009; limited number of colours
| Property | Test / Standard | Description |
| Volume Solids | ISO 3233 | 54± 2 % |
| Weight solids | Theoretical Value | 66 ± 2 % |
| Gloss (GU 60°) | ISO 2813 | Matt (0–35) |
| Flash Point | ISO 3679 Method 1 | 101 °C |
| Density | Theoretical Value | 1.4 kg/L |
| Region | Regulations | Test / Standard | VOC Value |
| China | Mandatory national standard of China | GB 30981.2-2025 | 94 g/L |
| Coating hazards GB | 30981.2-W-Pb≤1000-NC |
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 | 40–80 µm |
| Wet Film Thickness | 75–150 µm |
| Theoretical Spreading Rate | 13.3–6.6 m²/L |
Theoretical spreading rate 9.6–4.8 m²/kg
Surface Preparation
| Substrate | Minimum | Recommended |
| Coated surface | A clean, dry and sound compatible primer. | |
| Composite | The surface must be roughened by hand or machine to produce a rough surface | |
This product may be applied by the following methods
| Spray: | Apply by airless spray. |
| Brush: | usable. Take care to achieve the specified dry film thickness. |
| Roller: | Suitable. With roller application, take care to apply sufficient material to achieve the specified dry film thickness. |
| Jotatop BC300 WF Comp A — Water-Borne General-Purpose Polyurethane Blade Coating, Component A | 11.1 parts |
| Jotatop BC300 WF Comp B — Water-Borne General-Purpose Polyurethane Blade Coating BC300, Component B | 1 part |
| Thinner: | Deionised water |
| Cleaner: | Jotun Thinner No. 17 / Jotun Thinner No. 4 |
When the thinner is used as a cleaning solvent, it must first comply with local regulatory requirements
| Nozzle tip size (inch/1000): | 11-17 |
| Nozzle pressure (minimum): | 150 bar/2100 psi |
| Substrate Temperature | 10 °C | 23 °C | 40 °C |
| Touch Dry | 1.5 h | 40 min | 20 min |
| Handle dry | 16 h | 8 h | 6 h |
| Minimum recoat interval | 4 h | 2 h | 1 h |
| Dry/cured to service | 10 days | 7 days | 4 days |
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.
| Touch Dry | The state at which light finger pressure leaves no mark or stickiness. |
|---|---|
| Handle dry | The minimum time after application before handling will not damage the film. |
Minimum recoat interval after drying: the recommended minimum interval before applying the next coat.
Dry/cured to service: the minimum time before the coating can be permanently exposed to a specific environment/medium.
| Paint temperature | 23 °C |
| Pot Life | 2 h |
Temperature
| Continuous | Peak | |
| Drying, atmospheric | 120°C | 140 °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: | Polyurethane, polyurethane putty, epoxy |
| Subsequent coat: | Polyurethane |
Weight, container size
(L)
Jotatop BC300 WF Comp A 15 kg 20 Waterborne Universal Polyurethane Blade Coating Component A. Jotatop BC300 WF Comp B 1.35 kg 3 Waterborne Universal Polyurethane Blade Coating BC300 Component B. The packaging sizes above are typical reference sizes for factory batch production. Packaging sizes and capacities may vary by region due to differences in local regulations.
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.
| Jotatop BC300 WF Comp A — Water-Borne General-Purpose Polyurethane Blade Coating, Component A | 12 months |
| Jotatop BC300 WF Comp B — Water-Borne General-Purpose Polyurethane Blade Coating BC300, Component B | 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.
