Metal oxide coated aluminum pigments
AssigneeBASF SE
InventorsWerner Ostertag, Norbert Mronga
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Abstract
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.
Claims9
A metallically bright reflection pigment consisting of a substrate of plateletlike aluminum and a coating of titanium dioxide.
A metallically bright reflection pigment consisting of a substrate of plateletlike aluminum, a coating of titanium dioxide and an oxide of titanium where the titanium is in an oxidation state <
- 4.
A metallically bright reflection pigment consisting of a substrate of plateletlike aluminum and a coating of titanium dioxide and a member selected from the group consisting of titanium nitride or titanium oxynitride.
A metallically bright reflection pigment consisting of a substrate of plateletlike aluminum, a coating of titanium dioxide and a coating of a different metal oxide.
A process for preparing a metallically bright reflection pigment consisting essentially of plateletlike aluminum and a coating of titanium dioxide comprising passing TiCl.sub.4 vapor at above 100.degree. C. together with water vapor into a fluidized bed of plateletlike aluminum suspended with an inert carrier gas, with the proviso that the volume of the TiCl.sub.4 vapor, based on the volume of the other gases and vapors introduced into the fluidized bed, does not exceed 5% by volume.
Dependencies are inferred from the claim text.