Patent ID: 9469770
Filing Date: 2016-10-18
CPC Classification: C09D,Y10T

Claim Text:
1. A rust-preventive coating comprising a laminated body comprising two layers of coatings contacted with each other, wherein among the two layers of coatings, a first coating as a coating at an inner layer side is obtained from a first paint composition that contains a first metal-based powder and a first binder component, among the two layers of coatings, a second coating as a coating at an outer layer side is obtained from a second paint composition that contains a second metal-based powder and a second binder component, and the first metal-based powder comprises a first zinc-based powder comprising one or more selected from zinc powders and zinc alloy powders and a first aluminum-based powder, and the second metal-based powder comprises: a second zinc-based powder comprising one or more selected from zinc powders and zinc alloy powders; and a second aluminum-based powder comprising one or more selected from aluminum powders and aluminum alloy powders, wherein RL<RU≦2.7RL is satisfied where RL represents a first aluminum ratio as a mass ratio of the first aluminum-based powder to a total of the first zinc-based powder and the first aluminum-based powder of the first metal-based powder and RU represents a second aluminum ratio as a mass ratio of the second aluminum-based powder to a total of the second zinc-based powder and the second aluminum-based powder of the second metal-based powder.