| abstract |
Spherical particles of cured epoxy resin having an average size not larger than 50 µm can be produced by adding a water-soluble amine curing agent to an emulsion of uncured eopxy resin. It is possible to prepare spherical particles incorporating a UV absorber or inorganic particles, to dye these particles with an acid dye, and to subject them to electroless plating. In addition, after-treatment of the cured particles enhances their heat resistance and destroys the epoxide groups left unreacted inside each particle. These particles may be used as an ingredient of cosmetic and coating compositions, as a toner of electrostatic copiers, and for other applications. |