Processes for preparing light-colored alk(en)yl oligoglycoside mixtures

US6903066B2 · kind B2 · utility

Assignee

• Cognis Deutschland GmbH & Co. KG · DE

Inventors

• Ditmar Kischkel · Monheim, DE
• Werner Leinemann · Ratingen, DE
• Rainer Eskuchen · Langenfeld, DE
• Michael Koehler · Mettmann, DE
• Manfred Weuthen · Langenfeld, DE

Key dates

• Filing date: Sep 19, 2001
• Grant date: Jun 7, 2005
• Expiry date: Sep 19, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D1/721
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Processes for preparing light-colored alkyl and/or alkenyl oligoglycoside mixtures are disclosed. The processes disclosed include providing an initial mixture of an alk(en)yl oligoglycoside and a rheology-modifying agent, the mixture having a viscosity of from 10 to 1000 mPas at a temperature of from 85 to 130° C., and a water content of less than 2% by weight, based on the alk(en)yl oligoglycoside; and bleaching the initial mixture at a temperature of from 85 to 130° C. to form a light-colored surfactant mixture having a water content of less than 2% by weight, based on the alk(en)yl oligoglycoside. Also disclosed is the use of such mixtures in cleaning compositions, such as detergents, washing and dishwashing compositions.