| 摘要 |
PURPOSE:To obtain the title fine particles having a fine spherical shape and no structural fluctuation and being suitably applicable for powdery adhesives and powder coatings, by emulsifying a compatibilized body of an epoxy resin and an org. polymer in an emulsifying medium and causing phase separation of both components in the particles. CONSTITUTION:A hardly or non-water soluble org. solvent whose b.p. is 100 deg.C or lower is added to a mixture of an epoxy resin (these contg. two epoxy groups, especially bisphenol type resins are pref.) and an org. polymer (those whose glass transition temp. is 80 deg.C or lower and which are essentially linear polymers are pref.) and heated at a temp. below the b.p. of water to prepare a compatibilized body, which is them emulsified in an emulsifying medium as it is. In this instance, the emulsifying medium is an aq. liq. and an O/W type emulsion is prepd. through a W/O type emulsion in the emulsifying process. Then, the title fine particles suitably applicable for powdery, adhesives and powder coatings are obtd. by causing phase separation of the epoxy resin component and the org. polymer component in the particles by, e.g., cooling the emulsion below the phase separation temp. |
