Solid solution pigment nanoparticles and method for producing solid solution pigment nanoparticles having controlled solid solution ratio

摘要

The problem addressed by the present invention is to provide; solid solution pigment nanoparticles having a homogeneous solid solution ratio; a method for producing solid solution pigment nanoparticles having a homogeneous solid solution ratio in each primary particle; and a method for controlling the solid solution ratio of solid solution pigment nanoparticles. The solid solution pigment nanoparticles are prepared by precipitating at least two types of pigment by mixing a pigment precipitation solvent and; at least one type of pigment solution wherein at least two types of pigment are dissolved in a solvent: or at least two types of pigment solution wherein at least one type of pigment is dissolved in a solvent. The solid solution pigment nanoparticles are wherein the solid solution ratio of the at least two types of pigment in the primary particles of the precipitated solid solution pigment nanoparticles with respect to the ratio of the at least two types of pigment in the pigment solution mixed with the pigment precipitation solvent having a precision within 25%.

主权项

1. A method for producing a solid solution pigment nanoparticle, comprising the steps of:
introducing a pigment separation solvent, as a first fluid, with at least one pigment solution having at least two types of pigment dissolved in a solvent, as a second fluid, into a processing device, the processing device comprising at least two processing surfaces facing each other, the at least two processing surfaces being operable to approach to and separate from each other, at least one of the at least two processing surfaces rotating relative to the other; mixing the first fluid and the second fluid to form a thin film fluid between the at least two processing surfaces; and separating the solid solution pigment nanoparticle having a controlled solid solution ratio, wherein the solid solution pigment nanoparticle is produced by separating at least two types of pigment, wherein the controlled solid solution ratio of at least two types of pigment in a primary particle of the separated solid solution pigment nanoparticle relative to a ratio of at least two types of pigment in the pigment solution mixed with the pigment separation solvent is within 25% as a degree of precision.