Cyclic amidine based corrosion inhibitors which inhibit corrosion caused by CO.sub.2 and H.sub.2 S

US4388213A · kind A · utility

Assignee

• BASF SE

Inventors

• Knut Oppenlaender · Ludwigshafen, DE
• Karl Stork · Eisenberg (Pfalz), DE
• Klaus Barthold · Mannheim, DE

Key dates

• Filing date: Feb 26, 1982
• Grant date: Jun 14, 1983
• Expiry date: Feb 26, 2002

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S507/939
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to corrosion inhibitors which are amides of cyclic amidines. The inhibitors are particularly useful for preventing the corrosion of metals caused by H.sub.2 S and CO.sub.2 in water-in-oil, particularly in saltwater-in-oil emulsions.