Interference films having acrylamide layer and method of making same
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United States of America Patent
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Feb 21, 2012
Grant Date -
Jul 3, 2008
app pub date -
Sep 19, 2007
filing date -
Dec 28, 2006
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Abstract
A method for forming a color shifting film on a support, the film comprising a reflective stack disposed adjacent to the support and an image is disclosed. The reflective stack comprises an at least partially transparent spacer layer comprising a substituted acrylamide polymer disposed between a partially reflective first layer and a reflective second layer. The acrylamide layer has a thickness sufficient to produce an interference color.
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