EPOXY RESIN COMPOSITION, PRODUCTS OF CURING THEREOF, MATERIAL FOR THE ENCAPSULATION OF SEMICONDUCTORS, NOVEL PHENOL RESIN, NOVEL EPOXY RESIN, PROCESS FOR PRODUCTION OF NOVEL PHENOL RESIN AND PROCESS FOR PRODUCTION OF NOVEL EPOXY RESIN

摘要

An epoxy resin composition including an epoxy resin and a curing agent as essential components, in which the curing agent comprises a phenol resin which has each structural moiety of a phenolic hydroxyl group-containing aromatic hydrocarbon group (P), an alkoxy group-containing aromatic hydrocarbon group (B) and a divalent aralkyl group (X), and also has, in a molecular structure, a structure in which the phenolic hydroxyl group-containing aromatic hydrocarbon group (P) and the alkoxy group-containing aromatic hydrocarbon group (B) are bonded with the other phenolic hydroxyl group-containing aromatic hydrocarbon group (P) or alkoxy group-containing aromatic hydrocarbon group (B) via the divalent aralkyl group (X).