Multilayer interference pigments
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United States of America Patent
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Feb 10, 2004
Grant Date -
N/A
app pub date -
Oct 24, 2000
filing date -
May 9, 1996
priority date (Note) -
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Abstract
Multilayer interference pigment consisting of a transparent carrier material coated with alternating layers of metal oxides of low and high refractive index, the difference in the refractive indices being at least 0.1, which is obtainable by alternate coating of the transparent carrier material with a metal oxide of high refractive index and with a metal oxide of low refractive index in a wet process by hydrolysis of the corresponding water-soluble metal compounds, separation, drying and, if desired, calcination of the resulting pigment.
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