Patent ID: 7524535
Filing Date: 2009-04-28
Classification: B82Y,C23C,C23F

Abstract:
1. A process of providing corrosion protection for a metal by coating said metal with a thiol compound, comprising: a. dissolving or dispersing said thiol compound in a solvent and preparing a solution or dispersion including 20 to 50 mM of the thiol compound, b. treating said metal with said solution or dispersion in the range of 3 to 11 seconds, c. drying or curing the treated metal, wherein a coating consisting essentially of said thiol compound is formed directly on the metal surface, and thereby increasing the corrosion resistance of said metal without using chrome, and wherein said metal is selected from the group consisting of hot rolled steel sheet, cold-rolled steel sheet, hot-dipped metallic coated steel sheets, electroplated metallic coated steel sheets, aluminum sheets, aluminum alloy sheets, zinc sheets, and zinc alloy sheets and said metal includes coatings of one or more layers selected from the group consisting of lead, lead alloy, nickel, nickel alloy, tin and tin alloy.