Spray-dried amorphous alkali metal silicate compound and its use in detergent compositions

US6191096A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Kathrin Schnepp-Hentrich · Monheim, DE
• Rene-Andres Artiga Gonzalez · Goldkronach, DE
• Katrin Burmeister · Poing, DE
• Hubert Freese · Goldkronach, DE
• Manfred Greger · Großkrotzenburg, DE
• Bernd Larson · Erkelenz, DE
• Volker Bauer · Neuberg, DE
• Peter Sandkuehler · Erkelenz, DE
• Wilfried Raehse · Goldkronach, DE

Key dates

• Filing date: Aug 18, 1997
• Grant date: Feb 20, 2001
• Expiry date: Aug 18, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D11/02
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A spray-dried amorphous alkali metal silicate compound which provides multiple-cycle washing performance. The silicate compound has a molar ratio of M.sub.2 O to SiO.sub.2 of 1:1.5 to 1:3.3 wherein M represents an alkali metal. The compound contains 0.5 to less than 30% by weight of anionic surfactant and has an absorption capacity for liquid components which is at least 20% higher than that of the same quantity of the alkali metal silicate compound which is free from anionic surfactant.