Pleochroism powder and pleochroism printed article
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United States of America Patent
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Apr 4, 2006
Issued Date -
N/A
app pub date -
Jun 5, 2002
filing date -
Mar 23, 1999
priority date (Note) -
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Abstract
A multi color changing powder with a bluish base appearance color of which color tone varies according to the observation direction is provided. A pleochroism powder of the present invention comprises a flaky mica having a coating which consists of two layers wherein one of said two layers is a first layer comprising a metal oxide of titanium coated on said flaky mica and the other is a second layer comprising metal oxides of cobalt and aluminum coated on said first layer.
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