| 摘要 |
PURPOSE:To obtain the subject particles capable of shortening a cooling time on their molding processing by coating styrenic resin particles with a higher fatty acid bisamide, dispersing the coated particles in an aqueous medium and subsequently impregnating the dispersed particles with an easily evaporable foaming agent. CONSTITUTION:(A) Styrenic resin particles are coated with (B) a higher fatty acid bisamide, dispersed in an aqueous medium and subsequently impregnated with (C) an easily evaporable foaming agent to produce the objective foamable styrenic resin particles. Before the particles are impregnated with the component C, a solvent having an ability to dissolve the component A is preferably dispersed in the aqueous medium. The component B is preferably ethylene bisstearyl amide, methylene bisstearylamide or ethylene bisoleic acid amide. |
