SURFACE MODIFICATION CARBON BLACK PARTICLE WATER DISPERSION AND PRODUCING METHOD OF SURFACE MODIFICATION CARBON BLACK PARTICLE WATER DISPERSION

摘要

PROBLEM TO BE SOLVED: To provide a surface modification carbon black particle water dispersion showing superior image density and dispersion stability while reducing water content and preventing a curl phenomenon in printing when used to water based ink compositions such as water based ink jet ink composition.SOLUTION: A surface modification carbon black particle water dispersion containing surface modification carbon black that at least one part of acid functionalities given to surface of oxidized carbon black particles are neutralized with ammonia and organic amine.SELECTED DRAWING: None