Two oxime-urethane derivatives, benzophenone oxime N-cyclohexylurethane (1) and dibenzophenone oxime N,N'-hexamethylenediurethane (2), were used as photobase generators. Photolysis of these derivatives results in the formation of amines which induce cross-linking of poly(glycidyl methacrylate) (PGMA) upon heating. The bifunctional derivative 2 is more efficient than the monofunctional derivative 1 in inducing thermal cross-linking of PGMA, with a maximum degree of insolubilization increasing up to ca. 90%.