A composition for an adhesive material, comprising at least one epoxide resin mixture and a hardening accelerator, in which the epoxide resin mixture has 25 to 80% by weight of a first epoxide resin—whereby the first epoxide resin is a bifunctional aliphatic, cycloaliphatic or aromatic epoxide resin—and 12.5 to 40% by weight of a second epoxide resin—whereby the second epoxide resin is a polyfunctional aliphatic or aromatic epoxide resin—and in which the hardening accelerator is an imidazole derivative, which is not soluble in the epoxide resin mixture at temperatures of below 50° C.