PU423 Polyurethane Clear Topcoat belongs to polyurethane paints and is used as a topcoat. Polyurethane clearcoat for finishing construction machinery and electric vehicles, such as concrete mixer trucks, agricultural vehicles, trucks, excavators, harvesters, forklifts, bulldozers, and cranes. Weather resistance, colour and gloss retention; applied over the topcoat to improve film gloss and fullness. Parameters on this page: DFT 20-30 µm, theoretical spreading rate 26 m²/kg, two-component.
Parameter source: OSAKA original technical data sheet (TDS) "PU423 Polyurethane Clear Topcoat"; values such as spreading rate 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 | 53% |
|---|---|
| Dry Film Thickness | 20–30 µm |
| Theoretical Spreading Rate | 26 m²/kg |
| VOC | 404.2 g/L |
| Density / Specific Gravity | 1.02 kg/L |
| Number of Components | Two-component |
| Flash Point | >23 °C (components A, B and their mixture) |
| Thinner | OUP 104, recommended addition 3%–5% |
| Mixing Ratio | Component A : Component B = 3:1 (by weight) |
Two-can pack, composed of high-hydroxyl acrylic resin and aliphatic isocyanate polymer. Excellent weather resistance, colour and gloss retention; applied over the topcoat to improve film gloss and fullness.
Polyurethane clearcoat for finishing construction machinery and electric vehicles, including concrete mixer trucks, agricultural vehicles, trucks, excavators, harvesters, forklifts, bulldozers, and cranes.
| Volume Solids | 53% |
|---|---|
| Dry Film Thickness | 20–30 µm |
| Theoretical Spreading Rate | 26 m²/kg (at 20 µm DFT) |
| Practical Spreading Rate | Allowing a suitable loss |
| Volatile organic compound content | 404.2 g/L |
| Mixing Ratio | Component A : Component B = 3:1 (by weight) |
|---|---|
| Airless spray | Recommended: nozzle tip size 0.43–0.49 mm; fluid pressure ≥15.5 MPa |
| Brush or roller | Recommended, but use a short-nap roller or soft brush to minimise air entrapment. |
| Conventional spray | Suitable, but not recommended. |
| Air-assisted airless spray | Recommended |
| Thinner | OUP 104, recommended addition 3%–5%. |
| Paint equipment cleaner | OUP 104 |
| Pot life | 5 °C: 6 h; 23 °C: 4 h; 35 °C: 2 h |
| Drying Time | ||||
| Substrate Temperature | Touch dry (min) | Hard dry (h) | Recoat Interval | |
| Minimum | Maximum | |||
| 5°C | 45 | 24 | No subsequent coat required | |
| 23°C | 30 | 12 | ||
| 35°C | 15 | 8 | ||
| Storage | In a dry, cool environment away from fire and heat sources. |
|---|---|
| Shelf life | Component A: 1 year; Component B: 6 months |
| Packaging Specifications | A: 18 kg in a 20 L container; B: 6 kg in a 10 L container |
| Flash Point | >23 °C (components A, B and their mixture) |
| density | 1.02 kg/L |
For application over surfaces already coated with topcoat; the surface shall be kept clean, dry and free from oil contamination.
Mix in the specified ratio for immediate use, and use within the pot life. After mixing and stirring thoroughly, allow to stand for 15–30 minutes before use. Avoid contact with moisture during storage and application.
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.
For more Q&A on selection, application, acceptance and defect diagnosis, seeFAQsection.
Packaging specifications and batch lead times are subject to actual availability. PleaseContact Uscontact us for project-based calculation.
