Process for the production of oligoglycerol mixtures of increased diglycerol content

US5349094A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Eugene G. Harris · Sharonville, US
• Udo Hees · Mayen, DE
• Reinhard Bunte · Dormagen, DE
• Johannes W. Hachgenei · Goldkronach, DE
• Peter Kuhm · Hilden, DE

Key dates

• Filing date: Jun 12, 1992
• Grant date: Sep 20, 1994
• Expiry date: Jun 12, 2012

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G65/34
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Oligoglycerol mixtures having a high diglycerol content are prepared by a process in which glycerol is condensed in the presence of zeolites corresponding to formula (I) EQU M.sub.2/z O * Al.sub.2 O.sub.3 * x SIO.sub.2 * y H.sub.2 O (I) in which M is an alkali metal or alkaline earth metal having a valency of z, x is a number of 1.8 to 12 and y is a number of 0 to 8. The water of condensation which is formed during the reaction, is continuously removed from the reaction mixture and the reaction is terminated when the quantity of water theoretically necessary for the formation of diglycerol has been separated.