Method for producing neutral sugar surfactant granulates

US6340665B1 · kind B1 · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Thomas Lueder · Langenfeld, DE
• Konstantinos Scholinakis · Düsseldorf, DE
• Bernhard Gutsche · Hilden, DE
• Hermann Hensen · Haan, DE
• Werner Seipel · Hilden, DE

Key dates

• Filing date: Dec 14, 1999
• Grant date: Jan 22, 2002
• Expiry date: Dec 14, 2019

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61Q11/00
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

A process for making neutral sugar surfactant granules involving: (a) providing a water-containing alkaline sugar surfactant selected from the group consisting of an alkyl oligoglycoside, an alkenyl oligoglycoside, a fatty acid-N-alkyl polyhydroxyalkylamide, and mixtures thereof; (b) providing a thin-layer evaporator or dryer having rotating internals; (c) neutralizing the water-containing alkaline sugar surfactant to a pH of from 6.8 to 7.5 to form a neutralized water-containing sugar surfactant; (d) introducing the neutralized water-containing alkaline sugar surfactant into the thin-layer evaporator or dryer; and (e) drying the water-containing alkaline sugar surfactant in the thin-layer evaporator or dryer until it has a residual water content below 2% by weight.