Method for producing 1,6-hexanediol by hydrogenation of oligo- and polyesters

US8759594B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Olivier Abillard · Ludwigshafen am Rhein, DE
• Rolf Pinkos · Bad Dürkheim, DE
• Gerd-Dieter Tebben · Mannheim, DE
• Tilman Sirch · Schifferstadt, DE
• Daniel Urbanczyk · Ludwigshafen, DE
• Heiko Urtel · Bischofswerda, DE
• Rolf Tompers · Mannheim, DE

Key dates

• Filing date: Mar 29, 2010
• Grant date: Jun 24, 2014
• Expiry date: Nov 5, 2030

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2601/14
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for hydrogenating oligo- and/or polyesters obtainable by esterifying a DCS with a diol or diol mixture, said hydrogenation being performed in the presence of a catalyst whose catalyst precursor comprises copper oxide, aluminum oxide and at least one oxide of lanthanum, of iron, of tungsten, of molybdenum, of titanium or of zirconium, and to a process for preparing 1,6-hexanediol by catalytically hydrogenating ester mixtures which comprise, as main components, oligo- and polyesters of adipic acid and 6-hydroxycaproic acid, and are obtained by esterifying DCS with diols, especially 1,6-hexanediol or diol mixtures.