Patent ID: 7029762
Filing Date: 2006-04-18
Classification: B05D,C09D,C23C,Y10T

Abstract:
1. A treated zinc-plated steel sheet comprising: a zinc-plated steel sheet surface; a first coating of zinc phosphate, in a coating weight of 0.3 to 5 g/m a second coating on said first coating, in a coating weight of 0.01 to 1 g/m 40 to 80% by weight of an organic resin (B), 5 to 30% by weight of a crosslinking agent (C) and 10 to 40% by weight of an inorganic corrosion inhibitor (D); wherein said organic resin (B) comprises a neutralized ethylene-unsaturated carboxylic acid copolymer (B1) and at least one resin (B2) selected from the group consisting of acrylic resins, polyester resins, polyurethane resins and epoxy resins, said copolymer (B1) having a degree of neutralization with an alkali metal of 30 to 90%, said resin (B2) having at least one functional group selected from the group consisting of carboxyl, hydroxyl and amide groups, and the weight ratio between said copolymer (B1) and said resin (B2) being 100:0 to 20:80.