Interference pigments comprising a layer of silicon oxide
AssigneeCiba Specialty Chemicals Corporation
InventorPatrice Bujard
Life of this patent
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Abstract
The present invention relates to pigments, comprising (A) optionally a layer consisting of a metal, (B) at least one layer, which is located between the layers (A) and (C), if a layer (A) is present, and consists of the metal, silicon (Si) and oxygen (O), and (C) optionally a layer consisting of SiOz with 0.70≦z≦2.0 on layer (B), a process for the production of the pigments and their use in ink-jet printing, for dyeing textiles, for pigmenting coatings, paints, printing inks, plastics, cosmetics, glazes for ceramics and glass.
Claims17
A pigment, comprising
- (A) optionally a layer consisting of a metal,
- (B) at least one layer, which is located between the layers (A) and (C), if a layer (A) is present, and consists of the metal, silicon (Si) and oxygen (O), obtained by calcination of plane-parallel structures (flakes) comprising at least one layer consisting of a metal and at least one layer consisting of SiOz with 0.70≦z≦2.0, in a non-oxidizing atmosphere and
- (C) optionally a layer consisting of SiOz on layer (B), wherein 0.70≦z≦2.0,
- wherein the metal of layer A. when present. is the metal of layer B.
A pigment, obtained by calcination of plane-parallel structures (flakes), comprising (A) at least one layer consisting of a metal and (C) at least one layer consisting of SiOz with 0.70≦z≦2.0, in a non-oxidizing atmosphere and optionally coating of the obtained flakes with further layers.
Dependencies are inferred from the claim text.