MINERAL ADDITIVES FOR SETTING AND/OR CONTROLLING THE RHEOLOGICAL PROPERTIES AND GEL STRUCTURE OF AQUEOUS LIQUID PHASES AND THE USE OF SUCH ADDITIVES

摘要

The invention concerns the use of mixed hydroxides of bivalent and trivalent metals with a three-dimensional space 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 viscosity increasing agents. The preferred garnet type mixed hydroxides are katoites of the basic structure Ca3Al2(OH)12, a minor proportion of the OH units of which can be substituted by moie-ties of acids, particularly silicate moieties.