Plateletlike pigments based on iron oxide and having a spinel structure of the composition: where u is from 0.01-0.09, v is from 0-0.3 and z is from 0-1. The pigments can be used for producing decorative coatings, in particular in paints, plastics, prints and cosmetics, for producing electromagnetic screens, as substrates for coatings and as pigments having magnetic properties.

Goniochromatic luster pigments based on silicon dioxide platlets, CVD coated with A) a nonselectively absorbing filmlike layer at least partially transparent to visible light, and B) if desired an outer layer which consists essentially of colorless or selectively absorbing metal oxide and/or comprises phosphate, chromate and/or vanadate, are prepared and used for coloring paints, inks, including printing inks, plastics, glasses, ceramic products and decorative cosmetic preparations.

Metallically bright reflection pigments comprising a substrate of plateletlike aluminum and coatings of titanium oxides applied on top of the substrate are used for coloring paints, plastics, printing inks, ceramic articles, glasses and cosmetic products.

Goniochromatic luster pigments based on multiply coated, high refractive, nonmetallic, platelet-shaped substrates which are at least partially transparent to visible light, comprising at least one layer packet of A) a colorless coating having a refractive index n.ltoreq.1.8 and B) a reflecting, selectively or nonselectively absorbing coating which is at least partially transparent to visible light, and also, if desired, additionally C) an outer protective layer, and their use for coloring paints...

Luster pigments useful for coloring paints, printing inks, plastics, glasses, ceramic products and decorative cosmetic preparations are based on multiply coated plateletlike metallic substrates comprising A) a first, colorless or selectively absorbing layer of metal oxide, B) a second, nonselectively absorbing layer of carbon, metal and/or metal oxide, and C) if desired a third, colorless or selectively absorbing layer of metal oxide.

Aqueous coating compositions comprise a water-soluble or water-dispersible film-forming polymer, a metallic pigment based on coated metal flakes, an organic nitro compound which is further carboxyl-, carbonyl- and/or hydroxyl-functionalized, and an organic solvent in which the nitro compound is soluble, along with further components customary for aqueous coating compositions.

Luster pigments based on multiply coated plateletlike metallic substrates comprising A) a first layer consisting essentially of silicon oxide, aluminum oxide and/or aluminum oxide hydrate, B) a second layer consisting essentially of metal and/or nonselectively absorbing metal oxide, and C) if desired, a third layer consisting essentially of colorless or selectively absorbing metal oxide.

Luster pigments based on multiply coated plateletlike metallic substrates comprise at least one layer packet comprising A) a colorless coating having a refractive index n.ltoreq.1.8, and B) a selectively absorbing coating having a refractive index n.gtoreq.2.0 and also if desired additionally C) an outer, colorless or selectively absorbing coating different than the layer (B) underneath.

Luster pigments based on coated, plateletlike, silicatic or metallic substrates wherein the coating comprises a metal sulfide are useful for coloring paints, printing inks, plastics, glasses, ceramic products and decorative cosmetic preparations.

Luster pigments useful for coloring paints, printing inks, plastics, glasses, ceramic products and decorative cosmetic preparations are based on multiply coated plateletlike metallic substrates comprising A) a first, colorless or selectively absorbing layer of metal oxide, B) a second, nonselectively absorbing layer of carbon, metal and/or metal oxide, and C) if desired a third, colorless or selectively absorbing layer of metal oxide.