A novel class of stabilizing compounds for phosphor screens

摘要

A phosphor screen is provided comprising a satiblizer being an organic compound or an oligomeric or polymeric compound comprising moieties corresponding to the following general formula I : wherein : R<1>, R<2>, R<3> and R<4> each independently represent a substituted or unsubstituted alkyl- or aryl group, R<5> represents hydrogen or a substituted or unsibstituted alkyl group and Z represents the atoms necessary to form a substituted or unsubstituted 5 to 8 membered ring.