METHOD FOR PRODUCING PARTICLE USED AS CONSTITUENT COMPONENT OF SEALING EPOXY RESIN COMPOSITION, CORE-SHELL PARTICLE USED AS CONSTITUENT COMPONENT OF SEALING EPOXY RESIN COMPOSITION AND SEALING EPOXY RESIN COMPOSITION

摘要

To improve the homogeneity of particles in the production of the particles used as a constituent component of a sealing epoxy resin composition.SOLUTION: There is provided a method for producing particles used as a constituent component of a sealing epoxy resin composition which comprises: (1) a melting and mixing step of obtaining a molten mixture (A) of en epoxy resin and a curing agent; (2) a feeding step of feeding the molten mixture (A) obtained in the melting and mixing step, an inorganic filler (B) and at least one material selected from the group consisting of a coloring agent and an ion scavenger in a stirring device equipped with a stirring blade; and (3) after the feeding step, a granulation step of heating the components fed in the stirring device to 110°C or more while driving the stirring blade at the linear velocity of 0.1 m/s or more at the tip to mix to obtain core-shell particles having a shell containing the molten mixture (A) outside a core containing the inorganic filler (B) and the material (C).SELECTED DRAWING: Figure 1