Sanyo Chemical Industries, Ltd.

Natsuki Nakamichi

Takao Mukai

Tsuyoshi Izumi

Resin particles which are excellent in electrostatic property, thermal storage stability and thermal properties, and have evenness of particle diameter are to be provided. The resin particles are core-shell resin particles (C2) each comprising one or more film-like shell layers (P) comprising a first resin (a) and a core layer (Q) comprising a second resin (b). Core-shell type resin particles (C2) each comprising a film-like shell layer (P) in one or more layer structure comprising a first resin (a) and a core layer (Q) in one layer structure comprising a second resin (b), wherein the weight ratio of (P) and (Q) is in a range of (0.1:99.9) to (70:30), the content of volatile components of (C2) is 2% by weight or lower, and (a) has an initial softening temperature of 40 to 270&#xb0; C., a glass transition temperature of 20 to 250&#xb0; C., a flow temperature of 60 to 300&#xb0; C., and the difference of the glass transition temperature and the flow temperature in a range of 0 to 120&#xb0; C. and contains 20 to 80% by weight of vinyl acetate as constituent units.

Growing community of inventors

Kyoto, Japan

Natsuki Nakamichi