Metal effect pigments comprising a mixed inorganic/organic layer, method for the production of such metal effect pigments, and use thereof

Metallic effect pigments with coating, comprising a platelet-shaped substrate, wherein the coating comprises at least one hybrid inorganic/organic layer having an average thickness of at least 10 nm, the hybrid layer having at least partly an inorganic network that has one or more inorganic oxide components, and having at least one organic component, the organic component being at least partly an organic oligomer and/or polymer which is covalently bonded at least partly to the inorganic network via one or more organic network formers,

• wherein the at least partial covalent bonding of inorganic oxide component and organic oligomer and/or polymer is accomplished at least partly through one or more organic network formers of the general formula (I)
• R1nR2mR3oSiX(4−n−m−o) (I)
• where X is a hydrolyzable group after whose hydrolysis a covalent bond of organic network former to the inorganic network can be formed and R1 is a reactive organic group which covalently bonds to the organic oligomer and/or polymer,
• R2 and R3 independently of one another is an organic group which is covalently bonded to the organic oligomer and/or polymer, or R2 and R3 independently of one another are non-reactive,
• with the proviso that
• n, m and o are integers, with n+m+o=1 to 3 and n=1 to 3, m=0 to 2, and o=0 to 2.