Preparation of alkanediols from alkynols

US4864066A · kind A · utility

Assignee

• BASF SE

Inventors

• Herbert Mueller · Herznach, CH
• Herbert Toussaint · Bischofswerda, DE
• Juergen Schossig

Key dates

• Filing date: May 2, 1988
• Grant date: Sep 5, 1989
• Expiry date: May 2, 2008

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C29/172
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for the preparation of alkanediols by hydrogenation of alkynediols of from 3 to 8 carbon atoms in which a solution of the alkynediol in an alcohol of from 1 to 8 carbon atoms, the mass fraction of alkynediol being more than 5%, of water at most 10%, and of alkanediol from 20% to 85%, is hydrogenated at temperatures of 110.degree. C. to 240.degree. C. and pressures greater than 10 bar, the pH being greater than 6.