Process for preparing raw materials for washing agents

US6191097A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Thomas Lueder · Langenfeld, DE
• Konstantinos Scholinakis · Düsseldorf, DE
• Bernhard Gutsche · Hilden, DE
• Christoph Breucker · Haan, DE
• Norbert Wrede · Goldkronach, DE

Key dates

• Filing date: Aug 25, 1999
• Grant date: Feb 20, 2001
• Expiry date: Aug 25, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D17/06
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A process for producing solid detergent granular materials is presented involving (a) forming an aqueous surfactant paste of an anionic surfactant, an amphoteric surfactant or mixtures thereof, and (b) drying and granulating the aqueous paste in a horizontal thin-layer evaporator or dryer having rotating fittings, wherein the drying is carried out at a temperature of 120.degree. C. to 130.degree. C. The process produces granules having a bulk density greater than 600 grams/liter and a uniform particle size distribution.