With inorganic / organic mixed layers coated pearlescent pigments and processes for their preparation

The invention relates to platelet-shaped pearlescent pigments which improve their performance and, in particular their mechanical properties with a hybrid inorganic / organic layer are coated with at least, and processes for their preparation and their use. These inorganic / organic mixed layer consists of at least one inorganic metal oxide component is at least partially crosslinked and an organic component. This is at least one organic oligomer and / or polymer which is at least partially linked to the inorganic network via network former covalently, wherein the coating comprises at least one hybrid inorganic / organic layer, the mixture layer at least partly an inorganic network that has one or more inorganic oxide components (n), and having at least one organic component, the organic component is at least partly an organic oligomer and / or polymer which is at least partially covalently bonded to the inorganic network via one or more organic network formers. Furthermore, the invention relates to a method for preparing such pearlescent pigments.