Process for the production of surface-active anionic surfactant salts using superheated steam

US5637560A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Wilfried Raehse · Goldkronach, DE
• Johann F. Fues · Grevenbroich, DE

Key dates

• Filing date: Mar 11, 1996
• Grant date: Jun 10, 1997
• Expiry date: Mar 11, 2016

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S516/06
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A process for the production of wetting-, washing- or cleaning-active anionic surfactant salts by reacting inorganic or organic bases with anionic surfactant intermediates containing hydrophilic negatively charged groups attached to hydrophobic hydrocarbon radicals. The salts are combined in a spray which is introduced into an inert gas phase of superheated steam whereby the spray is at least partly dried. In an embodiment of the process, the anionic surfactant intermediates are neutralized during the spraying step to form the salts.