| abstract |
An aqueous carbon black dispersion excellent in heat-resistant storage stability is provided. Disclosed is a carbon black dispersion comprising at least carbon black, a polymer, and an aqueous medium, having a viscosity of 4.0 cp or less, and having a pH drop of 1.0 or less when stored in a sealed state at 70 ° C. for 1 week. liquid. The carbon black dispersion of the present invention having a viscosity of 4.0 cp or less and a pH decrease width of 1.0 or less when stored at 70 ° C. for 1 week in a sealed state has better heat resistance than the conventional one. Has storage stability. Preferably, the acid value of the polymer is 240 mg-KOH / g or less, the weight average molecular weight of the polymer is 15,000 or more, and the content of components having a weight average molecular weight of 4,000 or less is 20% by weight or less. [Selection figure] None |