Method for producing alkylketen dimers

US7078569B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Roland Ettl · Haßloch, DE
• Manfred Winter · Dittelsheim-Heßloch, DE
• Torsten Freund · Schifferstadt, DE
• Thomas Kessler · Schifferstadt, DE
• Guenther Grimm · Ludwigshafen, DE

Key dates

• Filing date: Nov 19, 2002
• Grant date: Jul 18, 2006
• Expiry date: Feb 18, 2023

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D315/00
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Alkylketene dimers are prepared by reacting acyl chlorides with tertiary amines in a molar ratio of from 1:1 to 1:1.6 at from 65 to 150° C. and with a residence time of from 1 to 30 minutes in the absence of solvents with thorough mixing and isolation of the alkylketene dimers.