Preparation of sulfatobetaines

US4837330A · kind A · utility

Assignee

• BASF SE

Inventors

• Gerold Braun · Ludwigshafen, DE
• Chung-Ji Tschang · Bad Dürkheim, DE
• Christos Vamvakaris · Kallstadt, DE
• Klaus Glaser · Mutterstadt, DE

Key dates

• Filing date: Mar 15, 1988
• Grant date: Jun 6, 1989
• Expiry date: Mar 15, 2008

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D249/08
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Sulfatobetaines are prepared by reacting an adduct of a base having a tertiary N atom and sulfur trioxide with an alkylene oxide in the presence of an alkylene carbonate as a solvent.