Process for the production of alkyl and/or alkenyl oligoglycosides

US5898070A · kind A · utility

Assignee

• Henkel Limited

Inventors

• Paul Schulz · Wuppertal, DE
• Rainer Eskuchen · Langenfeld, DE
• Michael Nitsche · Solingen, DE

Key dates

• Filing date: Mar 17, 1997
• Grant date: Apr 27, 1999
• Expiry date: Mar 17, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07H15/04
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to an improved process for the production of alkyl and/or alkenyl oligoglycosides corresponding to formula (I): EQU R.sup.1 O-G!.sub.p (I) in which R.sup.1 is an alkyl and/or alkenyl radical containing 4 to 22 carbon atoms, G is a sugar unit containing 5 or 6 carbon atoms and p is a number of 1 to 10, by acid-catalyzed acetalization of primary alcohols with monomeric carbohydrates, in which the reaction is carried out in a stirred tank reactor surmounted by a vacuum falling-film evaporator through which the mixture is pumped under reaction conditions.