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US 6,485,556 B1Granted
Interference pigments
AssigneeEngelhard Corporation
InventorCarmine V. DeLuca, Jr.
Life of this patent
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Abstract
Pearlescent pigment having a chromium coating thereon and an iron oxide coating on the chromium coating are intensely colored, almost phosphorescently colored, and are highly reflective.
Claims20
A titanium dioxide nacreous pigment comprising platelets of titanium dioxide of about 1-75 μm in length and an interference thickness of about 5-600 nm and having a chromium coating thereon and an iron oxide coating on the chromium coating.
Dependencies are inferred from the claim text.