Method and composition for inhibiting corrosion of nonferrous metals in contact with water

US4298568A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Werner Gerhardt · Nideggen, DE
• Volker Wehle · Hilden, DE
• Andreas Syldatk · Goldkronach, DE
• Gabriele Rogall · Moers, DE
• Jurgen Reiffert · Oberhausen, DE
• Jens Conrad · Hilden, DE

Key dates

• Filing date: Aug 14, 1980
• Grant date: Nov 3, 1981
• Expiry date: Aug 14, 2000

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C02F5/14
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A method for inhibiting corrosion of nonferrous metals in contact with circulating water comprising the steps of adding to circulating water in contact with non-ferrrous metals from 0.05 to 10 gm/m.sup.3 of at least one 3-amino-5-alkyl-1,2,4-triazole wherein said alkyl has from 2 to 8 carbon atoms and adjusting said water to a pH of from 6 to 10; as well as corrosion inhibiting compositions containing said 3-amino-5-alkyl-1,2,4-triazole.