PU412 Aromatic Polyurethane Topcoat is a polyurethane coating used as a topcoat. Excellent resistance to severe weathering, excellent abrasion resistance, and excellent chemical and solvent resistance. Two-can pack, polyurethane topcoat, Component B is an aromatic isocyanate hardener. Parameters on this page: dry film thickness 50–80 µm, theoretical spreading rate 10 m²/kg, number of components two-component.
Parameter source: OSAKA manufacturer's Technical Data Sheet (TDS) "PU412 Aromatic 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 | 58% |
|---|---|
| Dry Film Thickness | 50–80 µm |
| Theoretical Spreading Rate | 10 m²/kg |
| VOC | 361.2 g/L |
| Density / Specific Gravity | 1.16 kg/L |
| Number of Components | Two-component |
| Flash Point | >23 °C (base, hardener, mixture) |
| Thinner | OUP 104, recommended addition 3%–5% |
| Mixing Ratio | Component A : Component B = 18:3 (by weight) |
Two-can pack, polyurethane topcoat, Component B is an aromatic isocyanate hardener.
Matte or high gloss, with good gloss retention. Excellent resistance to severe weather, abrasion, chemicals and solvents. A high-performance decorative and protective topcoat for various machinery and equipment under various climatic conditions.
| Volume Solids | 58% |
|---|---|
| Dry Film Thickness | 50–80 µm |
| Theoretical Spreading Rate | 10 m²/kg (based on dark-coloured paint and 50 µm dry film thickness) |
| Practical Spreading Rate | Allowing a suitable loss |
| Volatile organic compound content | 361.2 g/L |
| Mixing Ratio | Component A : Component B = 18:3 (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. |
| 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 | 60 | 24 | 24 h | 2 days |
| 23°C | 30 | 12 | 12 h | 2 days |
| 35°C | 15 | 8 | 8 h | 2 days |
| Storage | In a dry, cool environment away from fire and heat sources. |
|---|---|
| Shelf life | Component A: 1 year; Component B: 6 months |
| Packaging Specifications | Component A: 18 kg in a 20 L container; Component B: 3 kg in a 4 L container |
| Flash Point | >23 °C (base, hardener, mixture) |
| density | 1.16 kg/L |
For coating primed or intermediate-coated surfaces; the surface shall be kept clean, dry and free from grease. Compatible previous coats: epoxy ester, epoxy, polyurethane and similar primers or intermediate coats.
Mix in the specified ratio for immediate use, and use within the pot life. After mixing and stirring thoroughly, allow to stand for 5–15 minutes before application. The curing agent reacts readily with moisture; keep containers tightly closed during storage and use. Humid weather during application affects the gloss and appearance of the film.
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.
