| abstract |
An object of the present invention is to provide a method for producing an aqueous dispersion of polyester resin fine particles, which has an extremely small amount of residual solvent remaining in resin particles and has excellent storage stability, and an electrophotographic toner having an extremely small amount of residual solvent. A swelled body obtained by swelling a polyester resin containing an alkyl group and / or an alkenyl group and a carboxyl group with an organic solvent having a boiling point of less than 100 ° C., which does not dissolve the polyester resin but can swell, Mixing in an aqueous medium containing a basic compound, neutralizing a part or all of the carboxyl groups in the polyester resin with the basic compound, and dispersing the swollen body in the form of fine particles in the aqueous medium. After performing the method for producing an aqueous dispersion of polyester resin fine particles for removing the organic solvent, separating the fine particles of the polyester resin from the aqueous dispersion of polyester resin fine particles obtained by the above production method, containing fine particles obtained by drying. Electrophotographic toner. [Selection diagram] None |