Polyurethane topcoat is the most commonly used outer topcoat in heavy-duty anti-corrosion systems—good weather resistance, strong color and gloss retention, balanced chemical medium resistance and wear resistance, applied over epoxy primer/intermediate coat, commonly used in bridges, storage tank exteriors, marine engineering, factory steel structures and other applications requiring both anti-corrosion performance and appearance. By isocyanate type: aromatic polyurethane is prone to yellowing, mostly used indoors or in areas with low color requirements; aliphatic polyurethane (including acrylic polyurethane) does not yellow and has good gloss retention, and is the standard choice for outdoor exposed areas. Selection depends on weathering grade, gloss (gloss/semi-gloss/matte), and recoat interval—polyurethane is a two-component product with limited pot life after mixing, and recoating beyond the interval requires sanding and roughening. This page summarizes original manufacturer technical data for polyurethane paints from various brands.
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Information is subject to the manufacturer's latest version; original technical documents may be updated from time to time. For the latest version or models not listed,Contact Us.
This page compiles original-factory technical data sheets by tag. The same model may appear under several tags at once (for example, a water-borne epoxy primer belongs to "water-borne", "epoxy" and "primer"), the more entry points a model has, the more easily it is found by search habits. For selection advice, coating systems or quotations, contactContact Us.
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