Flame-retardant epoxy resin composition, molded object thereof, and electronic part

A flame-retardant epoxy resin composition comprising an epoxy resin (A), a phosphazene compound (B), an epoxy hardener (C) and an inorganic filler (D), wherein said phosphazene compound (B) and said epoxy hardener (C) are included in the range of 0.01 to 70% by weight and in the range of 0 to 70% by weight, respectively, relative to a total quantity of said epoxy resin (A), said phosphazene compound (B) and said epoxy hardener (C), and said inorganic filler (D) is included in the range of 0 to 95% by weight relative to a total quantity of said epoxy resin (A), said phosphazene compound (B), said epoxy hardener (C) and said inorganic filler (D) and

• wherein said component (B) is at least one member selected from the group consisting of
• (1) a cyclic and/or a chain phosphazene compound expressed by a general formula
• 5
• wherein each R1 and R2, being the same as or different from each other, is an alkyl group having 1 to 18 carbon atoms, a cycloalkyl group having 5 to 8 carbon atoms, an aryl group having 6 to 14 carbon atoms, an alkylaryl group having 7 to 18 carbon atoms, an alkenyl group having 2 to 18 carbon atoms, an alkenylaryl group having 8 to 18 carbon atoms, an amino group-substituted phenyl group, an aminoalkyl group-substituted phenyl group where the aminoalkyl group has 1 to 6 carbon atoms, a hydroxy group-substituted phenyl group, a hydroxyalkyl group-substituted phenyl group where the hydroxyalkyl group has 1 to 6 carbon atoms, a glycidyloxy group-substituted phenyl group or a glycidyloxyalkyl group-substituted phenyl group where the glycidyloxyalkyl group has 4 to 9 carbon atoms, providing that at least one of n R1s and n R2s is the amino group-substituted phenyl group, the aminoalkyl group-substituted phenyl group where the aminoalkyl group has 1 to 6 carbon atoms, the hydroxyalkyl group-substituted phenyl group where the hydroxyalkyl group has 1 to 6 carbon atoms, the glycidyloxy group-substituted phenyl group or the glycidyloxyalkyl group-substituted phenyl group where the glycidyloxyalkyl group has 4 to 9 carbon atoms, and n indicates an integer of from 3 to 10000;
• (2) a polymer of said cyclic and/or said chain phosphazene compound;
• and
• (3) a reaction product of said cyclic and/or said chain phosphazene compound with at least one compound selected from the group consisting of an epoxy compound, a phenol compound, an amine compound and an acid anhydride.