Method for passivating a metallic surface
The present invention relates to a method for passivating metallic surfaces, wherein the metallic surface is brought into contact with an aqueous composition containing at least one water-soluble polymer (X) that comprises acid groups, and at least one polyamine (P), wherein the pH of the compositio...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | The present invention relates to a method for passivating metallic surfaces, wherein the metallic surface is brought into contact with an aqueous composition containing at least one water-soluble polymer (X) that comprises acid groups, and at least one polyamine (P), wherein the pH of the composition is in the range from 0.5 to 2. |
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