the invention relates to melamine group containing compounds which have been found to be effective ultraviolet stabilizers . the invention also relates to ultraviolet degradable organic compositions containing an amount of a melamine group containing compounds to prevent such degradation . these stabilizers are effective in the presence of other additives commonly employed in polymeric compositions including , for example , pigments , colorants , fillers , reinforcing agents and the like . these ultraviolet stabilizers may be incorporated into the organic compositions such as polymers by adding to the polymer melt or dissolved in the polymer dope , coated on the exterior of the shaped or molded article , film or extruded fiber .