Korethan Topcoat UT6581 Polyurethane Topcoat is a polyurethane paint, used as a topcoat. Parameters on this page: volume solids 60 ± 2% (per ISO 3233), dry film thickness 40–50 µm, theoretical spreading rate 6.0 m²/L/100 µm. Comparable products of the same brand: Korethan Topcoat UT6581 Polyurethane Topcoat, KORETHANE ENAMEL UT5570 Polyurethane Fast-drying Topcoat, Korabor Enamel RT546-FLUORESCENT RED Heavy-duty Anti-corrosion Topcoat.
Data source: KCC original Technical Data Sheet (TDS), "Korethan Topcoat UT6581 Polyurethane 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 | 60 ± 2% |
|---|---|
| Dry Film Thickness | 40–50 µm |
| Theoretical Spreading Rate | 6.0 m²/L at 100 µm |
| VOC | Approx. 360 g/L |
| Density / Specific Gravity | 1.1–1.3 kg/L (after mixing, depending on colour) |
| Number of Components | Two-component |
| Thinner | No. 0624, No. 037U, maximum thinning 10% (by volume) |
| Colour / Appearance | High gloss. White, yellow, green, black and other colours |
| Packaging Specifications | 18L(UT6581 PTA: 15.75L, UT6581 PTB: 2.… |
For more Q&A on selection, application, acceptance and defect diagnosis, seeFAQsection.
UT6581 is a two-component, fast-drying, aliphatic acrylic polyurethane topcoat with excellent splash resistance to acids, alkalis, solvents, salts and water, and outstanding weather resistance and colour retention.
As a topcoat for steel or concrete structures in harsh chemical or climatic environments, such as chemical processing, petrochemical industries and similar industrial facilities, ship compartments and waste treatment equipment.
| Appearance and colour | High gloss. White, yellow, green, black and other colours |
|---|---|
| density | After mixing 1.1–1.3 (depending on colour) |
| Volume Solids | 60 ± 2% (per ISO 3233) |
| Theoretical Spreading Rate | On smooth surfaces, 12.0 m²/L at 50 µm dry film thickness |
| Flash Point | Base (UT6581 PTA): 29 °C/84 °F (closed cup); hardener (UT6581 PTB): 38 °C/100 °F (closed cup) |
| Volatile Organic Compounds | Approx. 360 g/L (per ISO 11890-1) |
Before application, remove all oil, grease, dust and other contaminants from the surface by suitable methods such as solvent cleaning and fresh water washing.
Korepox EH2350, Korepox EH2351, Korepox H.B. EH6270 or according to specification.
Apply by roller, brush or spray (air or airless). Airless spray: nozzle tip size 381–533 µm (0.015"–0.021"); nozzle pressure 11.7–15.2 MPa; fan angle 40°–60°.
Base : Hardener = 7:1 (by volume). Stir Components A and B uniformly before application, then pour hardener Component B into base Component A, stir to mix uniformly, then add a certain amount of thinner and mix thoroughly with a power stirrer.
Thinner No. 0624, No. 037U, maximum thinning 10% (by volume). Do not thin the components separately.
The application surface should be completely clean and dry, with relative humidity not exceeding 85% and the surface temperature at least 3 °C (5 °F) above the dew point to avoid condensation. Recommended ambient temperature: -5 °C/23 °F to 40 °C/104 °F.
Dry film thickness 40–50 µm. The dry film thickness varies with the purpose and location of use.
Under standard laboratory conditions: touch dry 2 h at 20 °C, 1 h at 30 °C; hard dry 12 h at 20 °C, 9 h at 30 °C. Actual times may vary with weather, wind and humidity.
According to the specification.
4 h (20 °C/68 °F).
At 20 °C/68 °F, minimum 12 h, maximum unlimited.
Continuous: 93 °C/200 °F (non-immersed areas); intermittent: 121 °C/250 °F (non-immersed areas).
| Shelf life | UT6581PTA (base): 12 months (at 23 °C/73.4 °F); UT6581PTB (hardener): 12 months (at 23 °C/73.4 °F) |
|---|---|
| Standard packaging sizes | 18L(UT6581 PTA: 15.75L, UT6581 PTB: 2.25L) |
Do not store below 5 °C/41 °F or above 40 °C/104 °F. Protect skin and eyes from direct contact with liquid coating; avoid prolonged inhalation of solvent vapours; ensure adequate ventilation. July 2025, 4th revision.
The text on this page was generated by OCR of the manufacturer's TDS; individual characters may differ from the original. The manufacturer's TDS prevails.
Data is subject to the manufacturer's latest version; in all cases the manufacturer's latest TDS prevails.
Packaging specifications and batch lead times are subject to actual availability. PleaseContact Uscontact us for project-based calculation.
The factory product codes of Korethan Topcoat UT6581 Polyurethane 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 |
|---|---|---|
| UT6581 N6 | — | 18 L |
| UT6581 1000 | — | 18 L |
| UT6581 RAL5003 | — | 18 L |
| UT6581 N9.5 | — | 18 L |
| UT6581 RAL3020 | — | 18 L |
| UT6581-1999 Black | — | 18 L |
| UT6581-2260 Red brown | — | 18 L |
This model has a total of7item 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.
