Preparation of ammonium carbamate

US4567294A · kind A · utility

Assignee

• BASF SE

Inventors

• Manfred Dressel · Lambsheim, DE
• Heinrich Eberle · Ludwigshafen, DE
• Willi Ripperger · Bischofswerda, DE
• Wolfgang Ruehenbeck · Weinheim, DE
• Werner Zwick · Ludwigshafen, DE

Key dates

• Filing date: Dec 20, 1984
• Grant date: Jan 28, 1986
• Expiry date: Dec 20, 2004

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01C1/00
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

In the preparation of ammonium carbamate by reacting ammonia with carbon dioxide, the reactants are introduced into a layer of ammonium carbamate which is kept in the fluidized state by gaseous ammonia or carbon dioxide. The temperature is kept below 25.degree. C. by removing the heat of reaction.