PLBS52-4 Premium acrylic polyurethane topcoat

Overview
Two-component acrylic polyurethane topcoat with weathering and color retention performance for long-term heavy-duty anti-corrosion service.​
Applicable for low-temperature construction.​

Composition
Formulated with polyurethane resin, high-grade pigments, solvents, and imported additives.​
Cured with polyisocyanate; supplied in Part A & Part B packs.​

Typical uses
Long-term heavy-duty anti-corrosion topcoat for large bridges, port machinery, construction machinery, containers, hydropower, nuclear power, large gates, tanks (including high-pressure tanks), and large steel towers.​

Technical data (typical)

• Appearance: Various colors.​

• Theoretical consumption: 0.13 kg/m² at 40 μm DFT (excluding loss).​

• Density: 1.2 kg/L.​

• Drying time (25°C): Surface dry 1 h; hard dry 24 h; fully cured 7 d.​

• Adhesion: Grade 1; bending 1 mm; impact 50; hardness 2H; gloss 87.​

Application data (25°C)

• Mixing ratio (Part A:Part B): 18:3.​

• Induction time: 5 min.​

• Pot life: 3 h.​

• Application methods: Airless spray, brush, roller.​

• Thinner: X-10 polyurethane thinner; dilution 3–7%.​

• Recoat interval (25°C): Min 24 h; max 7 d.​

• Recommended coats / DFT: 1 coat 30–50 μm; brush/roller 1 coat 30–40 μm.​

Surface preparation
When applied over two-component primers: all surfaces must be clean, dry, and free of contaminants; if beyond maximum recoat interval, roughen the surface.​
When used as the first coat: blast/shot blast to Sa 2.5 or power-tool cleaning to St 3; surface profile 30–75 μm.​

System compatibility / packing / storage

• Compatibility: Previous coat—epoxy zinc-rich primer; inorganic zinc-rich primer; epoxy MIO intermediate coating; polyurethane intermediate coating.​

• Packing: Part A 18 kg; Part B 3 kg.​

• Storage: Shelf life 12 months; store dry/cool/ventilated, away from fire and direct sunlight; no outdoor stacking.