Patent ID: 7714080

Claim:
A primer composition for bonding of semiconductor-encapsulating epoxy resin molding compound, comprising (A) an alkoxysilyl-containing polyamide-imide resin having the general formula (1): wherein X is a trivalent organic group, Y is a divalent organic group, Z is a group of the formula: R 1 is C 1 -C 3 alkyl, R 2 is C 1 -C 3 alkyl or alkoxy, a is an integer of 0 to 4, p is an integer of 2 to 100, and q is an integer of 2 to 100, (B) an epoxy resin having at least two epoxy groups in a molecule, said epoxy resin having the general formula (2): wherein G is a glycidyl group, R is hydrogen or a monovalent hydrocarbon group, at least one of all R groups is a monovalent hydrocarbon group, and n is 0 or an integer of 1 to 10, the epoxy resin being a mixture of epoxy resins having different values of n, the mixture of up to 70% by weight of the epoxy resin wherein n=0 and the remainder of the epoxy resin wherein n≠0, or epoxy resins having a molecular weight distribution wherein an average value of n, representative of an average degree of polymerization, is in the range of 1 to 3, (C) a curing promoter, and (D) an organic solvent present in an amount of 70 to 99.9% by weight based on the total weight of said primer composition.