Pigment dispersions and inkjet ink compositions
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United States of America Patent
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Oct 9, 2018
Grant Date -
May 25, 2017
app pub date -
Jul 25, 2016
filing date -
Nov 24, 2015
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Abstract
An aqueous dispersion contains pigment colorant particles that are present in an amount of at least 5 weight % and up to and including 80 weight %; a dispersing polymer that is a hexyloxy benzoic acid polymer; and an aqueous medium. The weight ratio of the pigment colorant particles to the dispersing polymer is from 19:1 to and including 2:1. Such aqueous dispersions can be incorporated into aqueous inkjet ink compositions that can be used for forming opaque images such as white images using inkjet printing methods.
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