Method for producing aliphatic alpha-, omega-diamines

US6278023A · kind A · utility

Assignee

• BASF SE

Inventors

• Guido Voit · Freinsheim, DE
• Rolf Fischer · Heidelberg, DE
• Peter Bassler · Viernheim, DE
• Andreas Ansmann · Wiesloch, DE
• Hermann Luyken · Ludwigshafen, DE
• Martin Merger · Bischofswerda, DE
• Frank Ohlbach · Mülheim an der Ruhr, DE
• Alwin Rehfinger · Mutterstadt, DE

Key dates

• Filing date: Aug 23, 2000
• Grant date: Aug 21, 2001
• Expiry date: Aug 23, 2020

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C209/48
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for preparing aliphatic alpha, omega-diamines by hydrogenation of aliphatic alpha, omega-dinitriles in the presence of a catalyst comprises using a hydrogenation catalyst comprising PA1 (a) iron or a compound based on iron or mixtures thereof, PA1 (b) from 0.001 to 0.3% by weight based on (a) of a promoter based on 2, 3, 4 or 5 elements selected from the group consisting of aluminum, silicon, zirconium, titanium and vanadium, and also PA1 (c) from 0 to 0.3% by weight based on (a) of a compound based on an alkali and/or alkaline earth metal.