Patent ID: 8268940

Claim:
A flame-retardant adhesive resin composition comprising a blend of a silicone unit-containing polyimide resin and an acenaphthylene-modified epoxy resin having a blend ratio of 65-98% by weight of the silicone unit-containing polyimide resin to 2-35% by weight of the acenaphthylene-modified epoxy resin; wherein the silicone unit-containing polyimide resin is constituted of a repeating unit represented by the following general formula (1) and a repeating unit represented by the following general formula (2) at a molar ratio of the repeating unit represented by formula (1) to the repeating unit represented by formula (2) in the range of 50/50 to 10/90: wherein in general formula (1), Ar 1 is a tetravalent aromatic group, R 1 and R 2 each is a divalent hydrocarbon group, R 3 and R 4 each is a hydrocarbon group of 1-6 carbon atoms, and m is a number of 1-20; and in general formula (2), Ar 1 is a tetravalent aromatic group and Ar 2 is a divalent aromatic group; and wherein the acenaphthylene-modified epoxy resin is obtained by epoxidation of a naphthol resin whose naphthalene ring is substituted with an acenaphthenyl group.