| 摘要 |
A method of producing a dispersion composition containing titanium black, a solvent and a dispersant including at least a first dispersant and a second dispersant, and the method includes dispersing a mixed liquid containing the titanium black, the first dispersant and the solvent, and adding the second dispersant to the dispersed mixed liquid and dispersing the same, wherein at least a part of the dispersant has an acid value of 50 mgKOH/g or more. |
| 主权项 |
1. A method of producing a dispersion composition comprising titanium black, a solvent and a dispersant including at least a first dispersant and a second dispersant, the method comprising:
dispersing a mixed liquid containing the titanium black, the first dispersant and the solvent using a bead mill; and adding the second dispersant to the dispersed mixed liquid and dispersing the same using a bead mill, wherein at least a part of the dispersant has an acid value of 50 mgKOH/g or more, and wherein the first dispersant and the second dispersant are the same as or different from each other, and wherein each of the first dispersant and the second dispersant is a graft copolymer comprising at least one selected from the group consisting of structural units represented by the following Formulae (1) to (5): wherein, in Formulae (1) to (5), each of X1, X2, X3, X4, X5, and X6 independently represents a hydrogen atom or a monovalent organic group; each of Y1, Y2, Y3, Y4, and Y5 independently represents a divalent linking group; each of Z1, Z2, and Z5 independently represents a hydrogen atom or a monovalent organic group; each of Z3 and Z4 independently represents a hydrogen atom or an alkyl group having 5 to 24 carbon atoms; and each of n, m, p, q, and r independently represents an integer from 1 to 500. |
