Mixtures of MGDA enantiomers, and process for making such mixtures

US9802884B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Marta Reinoso Garcia · Dossenheim, DE
• Markus Hartmann · Neustadt, DE
• Kati Schmidt · Shanghai, CN
• Matthias Rauls · Ludwigshafen, DE
• Thomas Schmidt · Neustadt, DE
• Paul Klingelhoefer · Mannheim, DE
• Alfred Oftring · Bad Dürkheim, DE
• Somnath Shivaji Kadam · Ludwigshafen, DE

Key dates

• Filing date: Sep 5, 2014
• Grant date: Oct 31, 2017
• Expiry date: Oct 21, 2034

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D3/33
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Mixture of L- and D-enantiomers of methyl glycine diacetic acid (MGDA) or its respective mono-, di or trialkali metal or mono-, di- or triammonium salts, said mixture containing predominantly the respective L-isomer with an enantiomeric excess (ee) in the range of from 10 to 75%.