Dye based aqueous pigment dispersions
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United States of America Patent
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Jan 7, 2003
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N/A
app pub date -
Nov 20, 2000
filing date -
May 28, 1998
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Abstract
Aqueous based pigment dispersions wherein the pigment is dispersed in a dispersant dye in the absence of any other dispersant or additive and aqueous based printing ink compositions containing these a pigment dispersions. Methods for preparing aqueous based pigment dispersions, wherein the pigment is dispersed in a dispersant dye, and method for preparing printing ink compositions incorporating these dispersions.
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