Preparation of transparent golden yellow, thermally stable two-phase pigments of the general formula xZnO.ZnFe2O4

摘要

Transparent, golden yellow, thermally stable two-phase pigments of the general formula xZnO.ZnFe2O4, where x is from 0.5 to 1.5, are prepared by a method in which the pH of an aqueous phase which contains transparent iron oxide yellow in suspension and zinc ions in solution is brought to 7-10, and the product is treated at above 200 DEG C. before or after being isolated from the aqueous phase.