Process for bleaching aqueous surfactant solutions

US5633358A · kind A · utility

Assignee

• Huels Aktiengesellschaft · DE

Inventors

• Juergen Gruetzke · Bochum, DE
• Stefan Schmidt · Aalen, DE
• Gerda Grund · Coesfeld, DE
• Uwe Tanger · Bochum, DE

Key dates

• Filing date: Sep 14, 1995
• Grant date: May 27, 1997
• Expiry date: Sep 14, 2015

Classification

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

Abstract

The invention relates to a process for bleaching aqueous alkyl polyglycoside solutions using hydrogen peroxide, in a first step the actual bleaching being carried out at alkaline pHs in the presence of an inorganic additive (hydrogen peroxide decomposition inhibitor) and in a second step a specific decomposition of the unreacted hydrogen peroxide being performed by contact with transition metals or inorganic compounds thereof.