Nippon Carbide Kogyo Kabushiki Kaisha

Sonoo Matsuoka

Hiroshi Serizawa

Kaoru Kajino

Takashi Terabayashi

A process for producing a binder resin for toners for developing electrostatic images, characterized by involving the step of stirring and thereby mixing a resin solution and an emulsified resin dispersion, and simultaneously or thereafter removing water and the solvent to give a solvent-free resin mixture composition.

Process for producing binder resin for toners for developing electrostatic images

A process for producing a binder resin for a toner comprising the steps of (1) mixing a substantially solventless resin (A) and an emulsion of a resin (B) different from resin (A) with stirring and (2) evaporating water from the mixture of resin (A) and the emulsion of resin (B) simultaneously with or after the step (1) to obtain a substantially solventless resin composition.

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Tochigi, Japan

Sonoo Matsuoka