A coating composition for Zn-Al-Mg coated steel and the Zn-Al-Mg coated steel sheet and method therefore

摘要

There is provided a coating composition for a hot-dip galvanized steel sheet excellent in corrosion resistance, a hot-dip galvanized steel sheet, and a method for producing the same. The present invention relates to a thermosetting resin composition comprising 5 to 10% by weight of a melamine-based curing agent based on 100 parts by weight of an acryl-urethane copolymer resin; 5 to 15% by weight of an ethylene acrylic acid co-curing agent; 10 to 30% by weight of a corrosion-resistant reinforcing agent containing an inorganic inorganic sol and a silicate-based silicate; And 2 to 10% by weight of a corrosion resistance improving agent containing a vanadium and titanium chelate complex, and a hot dip galvanized steel sheet coated with the coating composition, and a method for producing the same .