ANTICORROSIVE COATING MATERIAL AND METHOD OF RUST PREVENTION

摘要

An inexpensive chromium-free anticorrosive coating material which imparts higher corrosion resistance to metallic materials than rust preventives containing chromium. The coating material comprises a composition consisting mainly of a water-compatible resin and water and, per liter of the composition, 0.2 to 50 g of a compound having a thiocarbonyl group and 0.1 to 20 g of a vanadic acid compound, and optionally contains 0.1 to 5 g of phosphate ions and/or 50 to 500 g of water-dispersible silica.