Removal of water and ammonia from benzophenone imine reactor effluents

US5904814A · kind A · utility

Assignee

• BASF SE

Inventors

• Guido Voit · Freinsheim, DE
• Matthias Dernbach · Eppelheim, DE
• Karl Beck · Langen, DE
• Martin Holderbaum · Ludwigshafen, DE
• Hans-Jurgen Weyer · Frankenthal (Pfalz), DE

Key dates

• Filing date: Oct 15, 1997
• Grant date: May 18, 1999
• Expiry date: Oct 15, 2017

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S95/902
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for removing water and ammonia from benzophenone imine reactor effluents resulting from the catalytic reaction of benzophenones of the formula I ##STR1## where R.sup.1 and R.sup.2, have the meaning stated in the specification and wherein ammonia is distilled off from effluents and wherein water is either distilled off from the effluents over removed non-distillatively.