Abstract: An adhesive two-part formulation is provided that includes an amount of free-radical curable monomers, each of said free-radical curable monomers containing at least one acrylate moiety or at least one methacrylate moiety, a Lewis acid, a thermoplastic resin; and a polymeric impact modifier. Also present in the formulation is an amount of an activator of borane-amine complex, a metal accelerator; and a grafted elastomer with a thermoplastic additive. A process of applying the formulation to a substrate includes mixing together the formulation components such that each part has a storage stability at 50° C. for 30 days where the viscosity at 30 days is within 40% of an initial viscosity. The mixture is applied to the substrate and then allowed to cure to achieve an initial strength of at least 1 MPa lap shear strength within 45 minutes.

Abstract: The present invention includes formulations for use in preparing an optical material, optical materials, optical components and other products including optical materials, products including optical components, methods for improving various performance aspects of an optical material and optical components, and methods for purifying aliphatic methacrylate monomers and aliphatic dimethacrylates.