Method of producing granular surfactants

US5516447A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Volker Bauer · Neuberg, DE
• Jochen Jacobs · Wuppertal, DE
• Ditmar Kischkel · Monheim, DE
• Peter Kraeplin · Genthin, DE
• Andreas Syldath · Goldkronach, DE

Key dates

• Filing date: Feb 22, 1994
• Grant date: May 14, 1996
• Expiry date: Feb 22, 2014

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D1/72
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A process for the production of washing- and cleaning-active surfactant granules containing 60 to 70% by weight of surfactant and having an apparent density above 500 g/l, wherein a formulation containing a non-surface-active liquid component and having a liquid to paste-like form under normal pressure at temperatures of 20.degree. to 40.degree. C. is introduced to a fluidized bed and granulated and, at the same time, totally or partially freed from the non-surface-active liquid compound, optionally with addition of an inorganic or organic solid, and wherein the granules are discharged from the fluidized bed via a grading step by a countercurrent air-stream which is adjusted so that only particles above a predetermined size are removed from the granules.