Mixture for inhibition of corrosion of metals

US5785896A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Heinz-Joachim Rother · Krefeld, DE
• Franz Kunisch · Odenthal, DE

Key dates

• Filing date: Oct 31, 1995
• Grant date: Jul 28, 1998
• Expiry date: Oct 31, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C23F11/10
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A method of combating corrosion of a metal which comprises contacting such metal with a composition containing polyamino acids, their salts and their anhydrides, together with at least one corrosion inhibitor selected from the group consisting of benzotriazole, 4-C.sub.1 -C.sub.4 -alkylbenzotriazoles and 5-C.sub.1 -C.sub.4 -alkylbenzotriazoles.