Lithographic printing inks
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United States of America Patent
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Oct 19, 2004
Grant Date -
Sep 19, 2002
app pub date -
Jan 21, 2002
filing date -
Nov 30, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A single fluid lithographic printing ink composition includes a hydrophobic phase and a hydrophilic fluid phase. The hydrophilic fluid phase contains water or a liquid polyol or both. The hydrophobic phase contains a hydrogen bonding vinyl polymer that can hydrogen bond with the hydrophilic fluid phase. The vinyl polymers are preferably branched, but remain soluble in the hydrophobic phase. The invention provides stable inks that can be used as single fluid inks with excellent fountain stability and resistance to toning.
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