Patent ID: 7332535

Claim:
A method for stabilizing an organic substrate comprising the step of adding to the organic substrate a mixture of compounds comprising one or more compounds of the general formula (1) aryl-rest] whereas the aromatic ring system may be optionally substituted by one or more groups R′ which may be identical or different and which groups R′ can be aryl-, a saturated or unsaturated alkyl-, aralkyl-, or cycloalkyl- as well as halogen, and amino-, aminoalkyl-, aminocycloalkyl-, cyano-, thiocyano- or nitrogroup; a UV-absorber of the formula 2 wherein R 1 and R 2 are each independently, hydrogen or identical or different substituents selected from the group consisting of linear and branched alkyl- or alkoxy- groups having from 2 to 12 carbon atoms and from 1 to 4 oxygen atoms; and at least one compound selected from the group consisting of hindered amine, sterically hindered phenol, organophosphine, organophosphite, organophosphonate, and mixtures thereof.