An adhesive formulation including an acrylate monomer and/or a methacrylate monomer, a chlorosulfonated polymer resin, and a reducing agent. The adhesive also includes a cycloheteroatom zirconate or a cycloheteroatom titannate, which is utilized as a cure profile regulator. Further, the adhesive includes toughening-agent copolymers having a very low T.sub.g to increase impact strength of the cured adhesives at low temperatures.