PU426 Water-borne Polyurethane Anti-corrosive Topcoat is a water-borne paint, used as a topcoat. Used for anti-corrosion protection of steel structure surfaces in lightly to severely corrosive atmospheric environments, widely used in ships, containers, offshore oil platforms, docks and other marine facilities, and in petrochemical, crude oil storage tanks, tank farms, metallurgy and power industries. Contains no heavy metal pigments; environmentally friendly, flame-retardant, safe and easy to apply. Parameters on this page: dry film thickness 30–50 µm, theoretical spreading rate 10.86 m²/kg, number of components: two.
Data source: OSAKA original Technical Data Sheet (TDS), "PU426 Water-borne Polyurethane Anti-corrosive Topcoat"; spreading rate and other values are converted from the TDS parameters, 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 | 50% |
|---|---|
| Dry Film Thickness | 30–50 µm |
| Theoretical Spreading Rate | 10.86 m²/kg |
| VOC | — |
| Density / Specific Gravity | 1.15 kg/L |
| Number of Components | Two-component |
| Thinner | Clean fresh water |
| Mixing Ratio | Component A (base) : Component B (curing agent) = 7:1 (by weight) |
| Colour / Appearance | White, black or other colours specified by the customer |
A water-borne two-component polyurethane topcoat with excellent colour and gloss retention and excellent weather resistance; resistant to mineral and vegetable oils, paraffins, aliphatic petroleum products and mild chemical splashes; good intercoat adhesion with most water-borne anti-corrosive primers; low curing temperature and fast crosslinking reaction rate. Contains no heavy metal pigments; environmentally friendly, flame-retardant, safe and easy to apply.
For corrosion protection of steel structures in mild to severe atmospheric corrosion environments, widely used for marine facilities such as ships, containers, offshore oil platforms and docks, and in petrochemical, crude oil storage tank, tank, metallurgy and power industries.
| Colour | White, black or other colours specified by the customer |
|---|---|
| Volume Solids | 50% |
| Typical dry film thickness | 30–50 µm |
| Theoretical Spreading Rate | 10.86 m²/kg (based on 40 µm dry film thickness) |
| Practical Spreading Rate | Allowing a suitable loss |
| Mixing Ratio | Component A (base) : Component B (curing agent) = 7:1 (by weight) |
|---|---|
| Airless spray | Recommended: nozzle tip size 0.43–0.49 mm; output pressure 12–15 MPa |
| Conventional spray | Recommended: nozzle size 1.3–1.5 mm; output pressure 0.3–0.4 MPa |
| Brush | Recommended for touch-up or small-area application. Take care to achieve the specified dry film thickness. |
| Roller application | Recommended for small-area application. Take care to achieve the specified dry film thickness. |
| Thinner | Clean fresh water |
| Paint equipment cleaner | Clean fresh water |
| Pot life | 23 °C: 5 h |
| Drying Time | |||
| Substrate Temperature | Touch dry (min) | Hard dry (h) | Minimum recoat interval (h) |
| 23°C | 45 | 12 | |
Note: ventilation, temperature, relative humidity and film thickness all affect drying and curing times. The data above are measured under well-ventilated conditions with relative humidity <75%.
| Storage | Store in a cool, dry environment |
|---|---|
| Shelf life | 1 year |
| Packaging Specifications | Component A: 21 kg in a 20 L container; Component B: 3 kg in a 4 L container |
| density | 1.15 kg/L |
Primed or intermediate-coated surfaces shall be kept clean, dry and free from contamination; the substrate temperature shall be at least 3 °C above the dew point. The product cures down to 0 °C. When using, first stir the two components uniformly with a power stirrer, add 10% clean fresh water to thin, let stand for 10–15 minutes, then it is ready for use. Use within the pot life to avoid waste from gelling.
Preceding coatings: epoxy, polyurethane, acrylic etc.
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.
The factory product codes for PU426 Water-borne Polyurethane Anti-corrosive Topcoat are as follows.Item No.is the most accurate form when ordering;Colour/colour codecorresponds to the actual colour (RAL, GSB are colour chart codes);Packaging SpecificationsFactory complete-set specification format. Colors not listed may be ordered against the colour card.
| Item No. | Colour / colour code | Packaging Specifications |
|---|---|---|
| PU426 RAL9005 | — | 21 KG |
This model has a total of1item numbers, all listed on this page; colours outside the table (including special colours and bulk packaging) can be confirmed by phone, delivery dates are advised according to the factory's current production schedule and stock. In the packaging specification, the "+" indicates the complete-set notation for two-component products (base + curing agent), subject to the factory specification; a "—" in the colour column denotes an auxiliary product, or that the item has no colour code in the factory system.
