Process for the production of surfactant granules

US5739097A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Volker Bauer · Neuberg, DE
• Jochen Jacobs · Wuppertal, DE
• Bernhard Gutsche · Hilden, DE
• Thomas Lueder · Langenfeld, DE
• Christoph Breucker · Haan, DE
• Guenter Panthel · Haan, DE

Key dates

• Filing date: Dec 12, 1996
• Grant date: Apr 14, 1998
• Expiry date: Dec 12, 2016

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D11/0082
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

In the production of granules containing anionic surfactants and having a bulk density above 450 g/l by granulation of a surfactant preparation containing a non-surface-active liquid component, the water demand and hence the energy demand for evaporating the water can be reduced if the anionic surfactant in its acid form or a mixture containing one or more anionic surfactants in their acid form and an aqueous alkaline solution are separately treated with a gaseous medium, subsequently sprayed in substantially stoichiometric quantities into the granulation and drying zone either separately or together under a high propellant gas pressure and then granulated and, at the same time, dried, optionally with addition of one or more inorganic or organic solids.