Antimicrobial Coating Composition And Anti Microbial, Coated Steel Sheet Using Same

Abstract: The present invention relates to an anti-microbial coating composition comprising: 30 to 60 weight % of a polyester resin; 3 to 15 weight % of a curing agent; 0.1 to 5 weight % of an anti-microbial agent; 0.1 to 15 weight % of a pigment; and the balance of a solvent on the basis of the total weight of the coating composition. The present invention also relates to an anti-microbial coated steel sheet comprising: a steel sheet; and an anti-microbial coating layer formed on at least one surface of the steel sheet, wherein an anti-microbial agent is contained in at least a part of the anti-microbial coating layer and has a Z/(M+Ca) content ratio of 0.1 to 0.5 wherein M is Ca, Ba, Mg, Zn, Ni, Fe, or Al and Z is P, As, V, or Si. The anti-microbial coating composition according to the present invention contains an anti-microbial agent, and when the composition is formed into a coating layer, the anti-microbial agent is enriched at the surface of the coating layer. Thus, microbes adsorbed, along with moisture, onto the coating surface are effectively killed by the hydroxy radical species and hydroxy anions generated on the coating surface. The coated steel sheet using the anti-microbial coating composition according to the present invention has excellent design properties as well as excellent workability and chemical resistance.

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