Patent ID: 8647429

Claim:
Effect pigments having a corresponding interference color based on substrates A) or B), which substrates are A) uncoated, flake-form substrates or B) flake-form substrates coated with one or more metal oxides, said effect pigments comprising on the substrates A) or B) an outer metal oxide-containing, calcined coating comprising a) TiO 2 and b) Al 2 O 3 , MgO and/or CaO, and c) SiO 2 and d) ZnO, or e) comprising a) to d), but wherein some or all of a) to d) are present in at least one mixed oxide form instead of their form in a) to d), wherein of the metal oxide-containing, calcined outer coating has a thickness that is ≧20% more than a physical layer thickness of the corresponding interference colour.