Printable oxygen sensing composition
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United States of America Patent
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Oct 4, 2016
Grant Date -
Sep 2, 2010
app pub date -
Sep 18, 2008
filing date -
Sep 21, 2007
priority date (Note) -
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Abstract
An ink composition comprising an oxygen sensitive dye capable of fluorescing in a manner proportional to oxygen content; and a polymer matrix for the dye, the polymer matrix having units with pendant sulphonic acid or phosphonic acid groups or salts or esters of such groups, can be used with an appropriate meter to measure the oxygen content of packages in a non-invasive manner.
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