Ink for use in a flexographic printing process with wet on wet capability
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United States of America Patent
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May 20, 2014
Grant Date -
Aug 30, 2012
app pub date -
Mar 28, 2012
filing date -
Dec 22, 2008
priority date (Note) -
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Abstract
A flexographic printing ink for use in a flexographic printing process with wet on wet capability, comprising a polymer and a combination of liquids comprising radiation curable monomers and/or oligomers, diluents, colorants, additives, and photoinitiators, the components having the Hansen Solubility Parameters adjusted to generate an ink with a capability to form a gel having the required physical characteristics, and that is in a liquid form in the presence of a small quantity of non reactive solvent, or is brought to a liquid state during the printing process. The disclosure is also directed to a flexographic printing process with wet on wet capability based on controlled polymer or polymer segment precipitation that leads to gel formation of ink compounds by controlling the solubility parameter of the ink system.
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