Patent ID: 8088856

Claim:
A heat-curable resin composition comprising components (A) to (E) listed below: (A) an isocyanuric acid derivative containing at least one epoxy group within each molecule, in an amount of 100 parts by mass, (B) a silicone resin obtained by condensing a glycidoxyalkyltrimethoxysilane, said silicone resin containing at least one epoxy group within each molecule, in an amount of 10 to 1,000 parts by mass, (C) an acid anhydride curing agent, in an amount such that a ratio of [total epoxy group equivalents within component (A) and component (B)/carboxyl group equivalents within component (C)] is within a range from 0.6 to 2.2, (D) a curing accelerator, in an amount within a range from 0.05 to 5 parts by mass per 100 parts by mass of a combined mass of components (A), (B) and (C), and (E) an inorganic filler, in an amount of 200 to 1,000 parts by mass per 100 parts by mass of a combined mass of components (A), (B) and (C).