Use of glycine-N,N-diacetic acid derivatives as complexing agents for alkaline earth metal and heavy metal ions in the production and transport of petroleum and natural gas

US5783524A · kind A · utility

Assignee

• BASF SE

Inventors

• Thomas Greindl · Bad Dürkheim, DE
• Wilhelmus Slotman · Ludwigshafen, DE

Key dates

• Filing date: Dec 5, 1995
• Grant date: Jul 21, 1998
• Expiry date: Dec 5, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K8/528
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Glycine-N,N-diacetic acid derivatives and their alkali metal, akaline earth metal, ammonium and substituted ammonium salts, used as completing agents for alkaline earth metal and heavy metal ions in the production and transport of petroleum and natural gas.