Multicomponent mixtures based on water-soluble alkali metal silicate compounds and their use, more particularly as builders in detergents

US5814597A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Wilfried Raehse · Goldkronach, DE
• Johann F. Fues · Grevenbroich, DE
• Kathleen Paatz · Goldkronach, DE
• Wilhelm Beck · Goldkronach, DE
• Wolfgang Hlavacek

Key dates

• Filing date: Oct 10, 1996
• Grant date: Sep 29, 1998
• Expiry date: Oct 10, 2016

Classification

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

Abstract

The invention relates to a solid material (primary drying product) containing alkali metal silicate with a modulus (molar ratio of SiO.sub.2 to M.sub.2 O, M=alkali metal) of 0.8 to 4 in homogeneous admixture with other inorganic and/or organic useful materials and/or auxiliaries, which has been dried from a finely sprayed aqueous preparation of mixtures of the alkali metal silicates and the inorganic and/or organic useful materials and/or auxiliaries by means of a hot gas stream. The solid material according to the invention is characterized in that, as a primary drying product in homogeneous admixture with the alkali metal silicate, it contains at least 10% by weight of water-soluble inorganic and/or organic salts, has apparent densities of at least 150 g/l, possesses a microporous absorbent internal structure and has been dried with superheated steam as the hot gas stream. The invention also relates in particular to detergent builder systems based on multicomponent systems containing this overdried alkali metal silicate and to their use for subsequent impregnation with other free-flowing useful materials and mixtures thereof from the field of detergents and to the detergents obta…