As the quality and permanence of consumer and industrial products continue to improve, so do the demands on their appearance and durability. Therefore, there is a steadily increasing requirement for more durable pigments to color products such as paints, plastics, building materials and ceramics. As a consequence, the mixed metal oxides are of increasing importance to formulators. They need to satisfy the highest demands for heat stability and chemical inertness as well as weather- and light fastness, while taking account of the ecological aspects of the end product. To date, colored inorganic complex pigments are the most stable class of pigments developed by the color industry. HEUCODUR® pigments belong to this class. Their unique fastness properties are directly related to high-temperature processing (above 800° C /1500° F), which yields homogeneous crystalline mixed metal oxide compounds. This high-temperature-process demands a very precise control over the chemical and technical parameters; this has been made possible by the most up to date state of the art facilities for the production of HEUCODUR® pigments. The result is a very accurate control over particle morphology and particle size distribution, thereby explaining the improved high strength and hiding power of HEUCODUR® as well as the enhanced dispersion obtainable with these pigments in various formulated systems.