METHOD FOR PRODUCING PIGMENT COMPOSITION
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United States of America Patent
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Issued Date -
Nov 17, 2022
app pub date -
Oct 8, 2020
filing date -
Oct 18, 2019
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Abstract
An object of the present invention is to provide a method for producing a pigment composition that can efficiently reduce the number of coarse particles in a pigment composition such as an aqueous pigment dispersion. The inventors of the present invention have achieved this object by a method of producing a pigment composition for ink, including a processing step of crushing or cracking a pigment component in a raw material composition containing the pigment component and a liquid medium using a rotor-stator processing machine 100.
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