Process for simultaneously preparing 6-aminocapronitrile and hexamethylene diamine

US6147247A · kind A · utility

Assignee

• BASF SE

Inventors

• Guido Voit · Freinsheim, DE
• Klemens Flick · Herxheim, DE
• Hermann Luyken · Ludwigshafen, DE
• Alwan Rehfinger · Mutterstadt, DE
• Peter Bassler · Viernheim, DE

Key dates

• Filing date: Mar 10, 1999
• Grant date: Nov 14, 2000
• Expiry date: Mar 10, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C253/30
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for coproduction of 6-aminocapronitrile and hexamethylenediamine starting from a mixture comprising a phosphorus-containing compound and essentially adiponitrile and obtained by reaction of butadiene with hydrocyanic acid in the presence of a catalyst comprising a phosphorus-containing compound comprises PA1 (1) reducing the weight proportion of phosphorus-containing compound, calculated as phosphorus, in the mixture, PA1 (2) partially hydrogenating the resulting mixture in the presence of a catalyst to form an .alpha.,.omega.-aminonitrile, and PA1 (3) removing 6-aminocapronitrile and hexamethylenediamine from the mixture.