PLS52-4 High-solids polyurethane anti-corrosion topcoat

Overview
Two-component high-solids polyurethane anti-corrosion topcoat with low VOC (305 g/L).​
Suitable for high-build application; artificial weathering resistance: 1500 h.​

Composition
Based on acrylic polyol resin, polyurethane reactive diluent, and chain extender as main film-formers, with pigments and additives.​
Cured with polyisocyanate adduct; supplied in Part A & Part B packs.​

Typical uses
Long-term protection and finishing for equipment/facility steel structures in various environments, such as petrochemical, power, wind power, cast pipe, bridges, and port facilities.​

Technical data (typical)

• Appearance: Various colors.​

• Theoretical consumption: 0.108 L/m²; 0.14 kg/m² at 70 μm DFT (excluding loss).​

• Density: 1.3 kg/L.​

• Solids: 80% (by weight); 65% (by volume).​

• Drying time (25°C): Surface dry 2 h; hard dry 24 h; fully cured 7 d.​

Application data (25°C)

• Mixing ratio (Part A:Part B): 7:1.​

• Induction time: 5 min.​

• Pot life: 3 h.​

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

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

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

• Recommended coats / DFT: 1 coat 30–70 μm; brush/roller 1 coat 30–45 μm.​

Surface preparation
Remove dust and oil contamination from the previous coat; 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—polyurethane intermediate coating; epoxy primer; epoxy intermediate coating.​

• Packing: Part A 21 kg; Part B 3 kg.​

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