Epoxy resin adhesive composition

An epoxy resin adhesive composition comprising:

• (A) an epoxy resin,
• (B) 10 to 100 weight parts based on 100 weight parts of (A) of a powder core/shell polymer comprising particles having,
• a core comprising an acrylate polymer or a methacrylate polymer having a glass transition temperature of -30.degree. C. or lower and 0.01 to 5 weight %, based on the total amount of the monomers, of a crosslinking monomer having two or more double bonds of substantially the same reactivity in the molecule and
• a shell comprising a copolymer having a glass transition temperature of 70.degree. C. or higher which is made from (a) an acrylate monomer or a methacrylate monomer, (b) a radical polymerizable unsaturated carboxylic acid monomer having 3 to 8 carbon atoms and carboxyl groups, the amount of the monomer having carboxyl groups being 0.01 to 20 weight parts based on 100 weight parts of the shell copolymer, and (c) 0.01 to 5 weight %, based on the total weight of monomers in the shell, of a crosslinking monomer having two or more double bonds of substantially the same reactivity in the molecule,
• wherein the powder core/shell polymer comprises powder polymer particles ion-crosslinked by addition of a monovalent or divalent metal cation in a mole ratio of metal cation to the carboxyl groups in the copolymer of 0.1:1 to 3:1, and wherein the weight ratio of the core to the shell is from 10:1 to 1:4 and the weight average diameter of the core comprising a single particle or an aggregate of the particles is from 0.1 to 3.0 .mu.m;
• and
• (C) 3 to 30 weight parts based on 100 weight parts of (A) of a heat activation type hardener for epoxy resins,