Diffractive pigment flakes and compositions
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United States of America Patent
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Jun 15, 2004
Issued Date -
N/A
app pub date -
Dec 10, 2002
filing date -
Jul 31, 2001
priority date (Note) -
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Abstract
Diffractive pigment flakes include single layer or multiple layer flakes that have a diffractive structure formed on a surface thereof. The multiple layer flakes can have a symmetrical stacked coating structure on opposing sides of a reflective core layer, or can be formed with encapsulating coatings around the reflective core layer. The diffractive pigment flakes can be interspersed into liquid media such as paints or inks to produce diffractive compositions for subsequent application to a variety of objects. The diffractive pigment flakes can be formed with a variety of diffractive structures thereon to produce selected optical effects.
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