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METHOD FOR MANUFACTURING AQUEOUS DISPERSION OF OXIDIZED CARBON BLACK, AND METHOD FOR MANUFACTURING AQUEOUS DISPERSION OF OXIDIZED CARBON BLACK FOR INKJET INK
METHOD FOR MANUFACTURING AQUEOUS DISPERSION OF OXIDIZED CARBON BLACK, AND METHOD FOR MANUFACTURING AQUEOUS DISPERSION OF OXIDIZED CARBON BLACK FOR INKJET INK
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机译:制造氧化碳黑的水分散体的方法以及制造喷墨油墨的碳黑的水分散体的方法
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摘要
Provided is a method for easily producing an oxidized carbon black aqueous dispersion that can highly remove multivalent metal ions and exhibit excellent dispersion stability. A method for producing an oxidized carbon black aqueous dispersion by successively performing on an aqueous slurry of oxidized carbon black having one or more anionic functional groups on a surface thereof a neutralization step of mixing an alkali metal hydroxide and performing heating/neutralization in the presence of one or more selected from a water-soluble chelating agent and a salt thereof or after mixing an alkali metal hydroxide and performing heating/neutralization, mixing one or more selected from a water-soluble chelating agent and a salt thereof and a separation and removal step of separating and removing a multivalent metal ion chelate complex from a mixed solution obtained at the neutralization step using a separation membrane.
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