| abstract |
The present invention provides a method for producing an aqueous dispersion for thermal ink jet having excellent ejection properties, the aqueous dispersion, and an aqueous ink containing the aqueous dispersion. [1] A mixture containing a pigment, a polymer having an anionic group, a volatile base, a nonvolatile base, an organic solvent, and water, the degree of neutralization of the anionic group by the volatile base And a mixture in which the total degree of neutralization of the anionic groups by the non-volatile base is 210 to 500% and the molar ratio of (volatile base / non-volatile base) is more than 1 Step (1) for obtaining a polymer, and Step (2) for obtaining an aqueous dispersion of polymer particles containing a pigment by removing the volatile base and the organic solvent from the dispersion obtained in Step (1). And a method for producing an aqueous dispersion for thermal ink jet recording, and [2] an aqueous ink containing an aqueous dispersion obtained by the production method. [Selection figure] None |