Preparation of alkylamines

US6806379B2 · kind B2 · utility

Assignee

• Consortium für elektrochemische Industrie GmbH · DE

Inventors

• Andreas Bauer · Kaarst, DE
• Herbert Jekat · Frasdorf, DE
• Jochen Rauch · Burgkirchen an der Alz, DE
• Peter John · Burghausen, DE
• Wolfgang Kohlmann · Hersbruck, DE
• Volker Frey · Burghausen, DE
• Bernd Pachaly · Schweich, DE

Key dates

• Filing date: Dec 30, 2002
• Grant date: Oct 19, 2004
• Expiry date: Feb 26, 2023

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07F7/1892
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A continuous process for preparing alkylamines comprises reacting continuous streams of ammonia and alkyl halide in a molar ratio of at least 10:1 in a pressure reactor. The ultimate reaction mixture has a temperature of >80° C., a pressure of >40 bar and an ammonium halide content of >1% by weight, and comprises two phases(A) a first phase comprising at least 75% by weight of the total amount of ammonium halide formed, and(B) a second phase comprising at least 80% by weight of the total amount of alkylamine formed.The first and second phases are separated, and an alkylamine product is recovered therefrom.