Photochromic security enabled ink for digital offset printing applications
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United States of America Patent
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Jan 16, 2018
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May 17, 2012
filing date -
May 17, 2012
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Abstract
An ink composition useful for digital offset printing applications comprises a photochromic material and a plurality of curable compounds. The compounds have Hansen solubility parameters as described herein, and the resulting ink composition is both compatible with certain dampening fluids and has certain rheological properties, including a low viscosity. The photochromic ink compositions are useful for providing security information in certain printing applications.
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