INORGANIC PIGMENT COMPRISING A SOLID SOLUTION OF DIFFERING SPINELS

摘要

ABSTRACT OF THE DISCLOSUREAn inorganic pigment and is process of manufacture are disclosed,charaterized in that the pigment, in contrast to substitution of one or moremetal ions into a given spinel crystal structure, is a solid solution compris-ing at least a double spinel structure, that is, a first cubic spinel crystalstructure containing within such lattice the spinel-forming metal oxides of atleast a second, differing spinel. As a result, the present inorganic multiplespinel solid solution pigments can be varied over a wide range of compositionalmake-up and yet, conversely, easily adjust to even slight compositional changesby vary m g the amounts or components of the first spinel and/or the spinel-form-ing metal oxides. The resulting pigments correspondingly can produce a widerange of colors and are yet capable of even small nuances of changes in color.