MAGNETIC MULTILAYER PIGMENT FLAKE AND COATING COMPOSITION
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United States of America Patent
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Issued Date -
Jan 5, 2012
app pub date -
Jun 30, 2010
filing date -
Jun 30, 2010
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Abstract
The present invention provides a magnetic multilayer pigment flake and a magnetic coating composition that are relatively safe for human health and the environment. The pigment flake includes one or more magnetic layers of a magnetic alloy having a substantially nickel-free composition including about 40 wt % to about 90 wt % iron, about 10 wt % to about 50 wt % chromium, and about 0 wt % to about 30 wt % aluminum. The coating composition includes a plurality of the pigment flakes disposed in a binder medium.
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