Thermochromic Compositions From Trisubstituted Pyridine Leuco Dyes
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United States of America Patent
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Issued Date -
Mar 28, 2013
app pub date -
Sep 26, 2012
filing date -
Sep 26, 2011
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Abstract
A thermochromic leuco dye composition contains a leuco dye moiety including one or more tri-aryl substituted pyridines, a UVA developer moiety including at least one UVA developer selected from the group consisting of salicylic acid and derivatives thereof, and biphenyls and derivatives thereof, and a carrier selected from the group consisting of a fatty ester, fatty alcohol, fatty amide, and combinations thereof.
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