Aliphatic Polyurethane Topcoat XH6406 is a polyurethane coating used as a topcoat. Can be used as a weather-resistant topcoat in harsh atmospheric corrosive environments. Parameters on this page: volume solids 45 ± 2%; dry film thickness 50/60/80 µm; theoretical spreading rate 5.6 m²/L.
Parameter source: T&H original technical data sheet (TDS) for Aliphatic Polyurethane Topcoat XH6406; 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 | 45 ± 2% |
|---|---|
| Dry Film Thickness | 50/60/80 µm |
| Theoretical Spreading Rate | 5.6 m2/L |
| VOC | 470g/L |
| Density / Specific Gravity | 1.20 kg/L |
| Number of Components | Two-component |
| Flash Point | 25°C |
| Thinner | 0-20% |
| Mixing Ratio | Base : curing agent = 5:1 (by weight), 4:1 (by volume) |
For more Q&A on selection, application, acceptance and defect diagnosis, seeFAQsection.
A two-component aliphatic acrylic polyurethane coating. It may be used as a weather-resistant topcoat in severe atmospheric corrosion environments.
| Colour | Available in a wide range of colours |
|---|---|
| Gloss | |
| density | 1.20 kg/L |
| Volume Solids | 45±2% |
| Volatile Organic Compounds | 470g/L |
| Flash Point | 25°C |
| Mixing ratio | Base : curing agent = 5:1 (by weight), 4:1 (by volume) |
| Typical dry film thickness | 60µm |
|---|---|
| Recommended dry film thickness | 50–100 µm, depending on system requirements |
| Induction time (20 °C) | 10-15min |
| Thinner quantity (by volume) | Airless spray 5–15% | Air spray 15–30% | Roller or brush 0–20% |
| Recommended nozzle size | 0.38~0.53mm | 1.5~2.5mm | None |
| Recommended spray pressure | 15~20MPa | 0.3~0.6MPa | None |
| Application suitability | Recommended | Applicable | Suitable for small-area repair |
| Dry film thickness (µm) | 50 | 60 | 80 |
| Wet film thickness (µm) | 111 | 133 | 178 |
| Theoretical spreading rate (m²/L) | 9.0 | 7.5 | 5.6 |
| Temperature | Surface Dry | Hard Dry | Pot Life | Recoat interval | |
| Minimum | Maximum* | ||||
| 5°C | 5h | 24h | 6h | 24h | |
| 15°C | 150min | 18h | 4h | 18h | / |
| 25°C | 90min | 12h | 2h | 12h | |
| 40°C | 60min | 8h | 45min | 8h | |
*The maximum recoat interval depends on the exposure environment and the end use of the coating.
All surfaces to be coated must be clean, dry and free of contaminants. Before application, all surfaces must be assessed and prepared in accordance with ISO 8504:2000. This product must be applied over the recommended anti-corrosive primer or intermediate coat within the specified recoat interval; the primer or intermediate coat must be dry and free of contaminants. When applied over other existing coatings, remove chalk, grease and other contaminants by suitable methods. Substrate in cracked or damaged areas must be prepared to Sa 2½ or St 3 and the primer repaired before applying this product.
1. During application, ensure ventilation and exhaust, keep away from sources of ignition, and wear protective equipment such as a mask and gloves; maintain adequate ventilation also during curing. 2. When mixing, first stir the base thoroughly, then add the curing agent in the specified ratio and mix well; adjust the thinner quantity according to application needs and temperature, stir thoroughly and allow induction. 3. Excessive thinning reduces sag resistance and slows curing. 4. Excessive film thickness severely affects drying, curing, recoatability and handling time. 5. Before recoating a coating exposed long-term, ensure the old film is free of contaminants and abrade the surface before applying the next coat. 6. With brush or roller application, high film thickness and a good continuous film cannot be achieved in one coat; several coats are required. 7. Products made with bright chromate-free red or yellow pigments require several coats over dark primers to achieve good hiding; therefore, a light-coloured primer or intermediate coat is recommended with these colours. 8. During application and curing, the substrate temperature must be above 5 °C and at least 3 °C above the dew point, with relative humidity not more than 85%. 9. Cutting of structures coated with this product produces fume; take appropriate protection. 10. When work is interrupted, do not leave paint in hoses, spray guns or spray equipment. Flush all equipment thoroughly with thinner. If the interruption is long, mix a fresh batch of paint for application. 11. Clean all equipment immediately after use with 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. 12. Surplus paint and empty containers must be disposed of in accordance with the relevant regional regulations.
| 18 kg per unit | Base 15 kg | Curing agent 3 kg |
| 15 L per unit | Base 12 L | Curing agent 3 L |
Keep sealed in a ventilated, cool, dry place away from sources of ignition. Minimum 12 months.
1. For the coating and its recommended thinners, see the safety sheets and the safety data of the relevant materials. This is a solvent-borne coating; avoid inhaling spray mist and solvent vapours, and avoid exposing skin and eyes and contact with uncured paint as far as possible. 2. All work related to the application and use of this product must comply with the relevant national health, safety and environmental standards and regulations. 3. 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. 4. If in doubt about the suitability of this product, consult the company.
The information provided in this product data sheet is based on laboratory test results that we consider accurate, and is provided for application guidance only. All recommendations and advice given by T&H on the use of T&H products, whether in technical documents, special consultation or otherwise, are based on information we consider most reliable. Our products and the information provided are intended for users with the necessary knowledge and industrial experience, and it is for these end users to determine whether the products are suitable for their use. T&H cannot control the quality and condition of the substrate, nor the various factors affecting the use of the product. Therefore, T&H accepts no liability for any loss, injury or damage arising from the use of our products or from reliance on this product data sheet (unless otherwise agreed in writing). Data in this product data sheet may be revised as necessary based on practical experience and continued product development.
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.
