Pigment dispersion liquid, a method for producing the pigment dispersion liquid, a photosensitive color resin composition comprising the pigment dispersion liquid, an ink-jet ink comprising the pigment dispersion liquid, a toner for electrophotographic printing comprising the pigment dispersion liquid, and color filter
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United States of America Patent
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Apr 12, 2016
Grant Date -
Aug 22, 2013
app pub date -
Oct 19, 2010
filing date -
Mar 31, 2009
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Abstract
The present invention is to provide a pigment dispersion liquid which has excellent pigment dispersion stability and high productivity even in the case of using a fine pigment and having high pigment concentration; a method for producing the pigment dispersion liquid; a color resin composition which has excellent pigment dispersion stability, causes no clogging problem, has excellent adhesion, and is able to form color layers with high pigment concentration, with accuracy; and a color filter comprising the resin composition. Disclosed is a method for producing a pigment dispersion liquid, comprising the step of dispersing a pigment by mixing at least a pigment (A), a polymer (B) having tertiary or lower amines, an amine-reactive low molecular compound (C), and a dispersion medium (D), and dispersing the pigment (A) while reacting the polymer (B) with the low molecular compound (C), and a pigment dispersion liquid produced by the production method.
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