Mineral additives for setting and/or controlling the rheological properties and gel structure of aqueous liquid phases and the use of such additives

US5663122A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Heinz Mueller · Monheim, DE
• Wolfgang Breuer · Korschenbroich, DE
• Claus-Peter Herold · Mettmann, DE
• Peter Kuhm · Hilden, DE
• Stephan von Tapavicza · Erkrath, DE

Key dates

• Filing date: Jan 27, 1995
• Grant date: Sep 2, 1997
• Expiry date: Jan 27, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10N2050/01
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention concerns the use of mixed hydroxydes of bivalent and trivalent metals with a three-dimensional spaced-lattice structure of the garnet type to control the thixotropic thickening of aqueous preparations, using swellable clays and/or other swellable layer-silicate compounds of natural and/or synthetic origin as visosity-increasing agents. The preferred garnet-type mixed hydroxydes are catoites of the basic structure Ca.sub.3 Al.sub.2 (OH).sub.12 a minor proportion of whose OH units can be exchanged for acid groups, in particular silicate groups.