| abstract |
The invention relates to the use of compounds of the formula <IMAGE> in which: R¹ is hydrogen, alkyl having 1 to 5 carbon atoms, alkoxy having 1 to 5 carbon atoms, halogen, cyano or nitro groups or optionally substituted phenyl or for 1-aminocycloalkylcarbonitrile, R² for hydrogen or alkyl having 1 to 5 carbon atoms and n for an integer from 4 to 6, as antioxidants for plastics. |