| 摘要 |
PROBLEM TO BE SOLVED: To provide a powder coating composition capable of forming a coating with good coating working property by a single coating step, and achieving excellent anticorrosion property.SOLUTION: The powder coating composition of the invention comprises an epoxy resin, an acid terminal polyester resin, and zinc powder, in which when a total sum of contents of the epoxy resin and the acid terminal polyester resin is 100 pts.mass, the content of the epoxy resin is 10-80 pts.mass, and the content of the acid terminal polyester resin is 20-90 pts.mass, and a content of the zinc powder to the whole powder coating composition, is 30-80 mass%. By such a composition, when the powder coating composition is coated to a surface of a coating object, the obtained coating comprises a layer in which the content of the zinc is relatively large, and a layer in which the epoxy resin and the acid terminal polyester resin are relatively large, so that the layer in which the zinc content is relatively large is formed on a side close to the surface of the coating object, and that the layer in which the resin content is relatively large is formed on the surface side.SELECTED DRAWING: None |
