BS06-1 Acrylic Polyurethane Anti-Corrosion Primer

Overview
Two-component acrylic polyurethane anti-corrosion primer for steel substrates on vehicles, ships, bridges, and steel structures where mechanical strength and chemical resistance are required.
Performance focus: adhesion and hardness with anti-rust protection, plus resistance to damp-heat, solvents, and chemicals.

Composition
Part A: hydroxyl acrylic resin with iron red, anti-rust pigments, and additives.
Part B: polyisocyanate curing agent.

Typical uses
Anti-rust primer for automobiles, construction machinery, mining machinery, ships, bridges, and steel structures.

Technical data (typical)

• Color: various colors.

• Theoretical consumption: 0.11 kg/m² at 35 µm DFT (loss not included).

• Density: 1.37 kg/L.

• Drying time (25℃): surface dry ≤0.5 h; hard dry ≤7 h; full cure 7 d.

Application data (25°C)

• Mixing ratio (Part A:Part B): 16:4.

• Induction time: 5 min.

• Pot life: 4 h.

• Application methods: airless spray, brush.

• Thinner: dedicated thinner, 2–8% (higher for air spray/roller).

• Recoat interval: min 8 h; max 7 d.

• Recommended coats/DFT: 1 coat 40–60 µm; brush/roller 1 coat 30–45 µm.

• Recommended system: acrylic polyurethane primer + acrylic polyurethane intermediate coating + acrylic polyurethane enamel coating.

• Application conditions: RH ≤85%; 5–35℃; avoid rain/snow, strong wind (>6.7 m/s), heavy fog, intense sunlight.

Surface preparation
Blast-clean to Sa 2.5 or power-tool clean to St 3; surface profile 30–75 µm.

System compatibility / packing / storage

• Compatibility: used with acrylic polyurethane intermediate coating and acrylic polyurethane enamel coating.

• Packing: Part A 16 kg; Part B 4 kg.

• Storage: shelf life 12 months.