Multi-colored lustrous pearlescent pigments

Multi-colored lustrous pearlescent pigments

A pearlescent pigment comprising a substrate and a first layer, wherein the first layer comprises iron oxide, wherein the iron has from about 1% to about 30% Fe(II) and from about 70% to about 99% Fe(III). A process for making these pearlescent pigment, comprise reducing a metal oxide substrate with...

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Bibliographische Detailangaben
Hauptverfasser: Hollman, Aaron M, Nicolas, Stephane, Schottland, Philippe, Debacker, Marguerite, Antonowicz, Aurelie, Lin, Hai Hui
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A pearlescent pigment comprising a substrate and a first layer, wherein the first layer comprises iron oxide, wherein the iron has from about 1% to about 30% Fe(II) and from about 70% to about 99% Fe(III). A process for making these pearlescent pigment, comprise reducing a metal oxide substrate with a hydrogen source in the presence of a noble metal catalyst in a liquid medium. The pigments may be used in a variety of applications including cosmetics, plastics, automotive or architectural coatings.