Method for providing corrosion resistance to metal objects

US4329381A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien (Henkel KGAA) · DE

Inventors

• Helmut Eschwey · Hilden, DE
• Joachim Galinke
• Renate Galinke, nee Jansen, heir · Langenfeld, DE
• Heinrich Linden · Hilden, DE
• Bernd Wegemund · Haan, DE
• Norbert Wiemers · Monheim, DE

Key dates

• Filing date: Feb 12, 1979
• Grant date: May 11, 1982
• Expiry date: Feb 12, 1999

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D7/45
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Method for providing corrosion protective coatings for metal surfaces. The coatings contain conventional coating components to which are added at least one zinc or lead salt of five- or six-membered heterocyclic compounds substituted by at least one hydroxyl or mercapto group and the ring includes at least one nitrogen atom and at least two conjugated double bonds, of which at least one has the formation. ##STR1## as corrosion inhibitors.