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...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: HAAS, JENS, SCHADE, CHRISTIAN, FESSENBECKER, ACHIM, WITTELER, HELMUT, BERTKAU, WALTER, RICHTER, FRANK
Format: Patent
Sprache:eng
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Beschreibung
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.