Micelle dispersion and process for producing the micelle dispersion

Abstract

A micelle dispersion comprises hydrophobic particles, conductive particles and a surfactant of a ferrocene derivative dispersed in an aqueous medium, wherein the surfactant of a ferrocene derivative in an equilibrium concentration comprises an oxidized compound in a concentration of 40 μg/ml or less and a reduced compound in a concentration of 50 to 300 μg/ml. A process for producing a micelle dispersion comprises dispersing hydrophobic particles, conductive particles and a surfactant of a ferrocene derivative in an aqueous medium, wherein an oxidized compound in the surfactant of a ferrocene derivative is removed with at least one of an ion exchange resin and a reducing agent. A color filter can be produced in an excellent yield without color overlapping by using the micelle dispersion and the process provides the micelle dispersion.

1 . A micelle dispersion which comprises hydrophobic particles, conductive particles and a surfactant of a ferrocene derivative dispersed in an aqueous medium, wherein the surfactant of a ferrocene derivative in an equilibrium concentration comprises an oxidized compound in a concentration of 40 μg/ml or less and a reduced compound in a concentration of 50 to 300 μg/ml.  
     
     
         2 . A micelle dispersion according to  claim 1 , wherein the hydrophobic particles are particles of organic pigments.  
     
     
         3 . A process for producing a micelle dispersion which comprises dispersing hydrophobic particles, conductive particles and a surfactant of a ferrocene derivative in an aqueous medium, wherein an oxidized compound in the surfactant of a ferrocene derivative is removed with at least one of an ion exchange resin and a reducing agent.  
     
     
         4 . A process according to  claim 3 , wherein the surfactant of a ferrocene derivative in an equilibrium concentration in the micelle dispersion comprises an oxidized compound in a concentration of 40 μg/ml or less and a reduced compound in a concentration of 50 to 300 μg/ml.