再颁专利
USRE40406E1 Process for coating and/or touching up coatings on metallic surfaces 有权
金属表面涂层和/或接触涂层的工艺

Process for coating and/or touching up coatings on metallic surfaces
摘要:
A composition and method for coating and touching up a metal surface is provided. The composition contains from about 0.5 to about 240 millimoles per kilogram of a fluorometallate ion, from about 0.5 grams/liters to about 10 grams/liter of phosphorous-containing inorganic oxy anions calculated at their stoichiometric equivalent as H3PO4; from about 0.05 g/l to about 3.5 g/l of hexavalent chromium and from about 0.10 g/l to about 2.20 g/l of trivalent chromium ions and a surfactant.
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