Polymer stabilizers containing both hindered amine and hydroxylamine moieties

A stabilized composition which comprises

• (a) a polymer subject to the deleterious effects of actinic light or of heat, and
• (b) an effective stabilizing amount of a compound of formula II ##STR12## wherein E is hydrogen, oxyl, hydroxyl, alkyl of 1 to 18 carbon atoms, alkenyl of 3 to 18 carbon atoms, aralkyl of 7 to 9 carbon atoms, cycloalkyl of 5 to 12 carbon atoms, hydroxylalkyl of 2 to 6 carbon atoms, alkoxyalkyl of 2 to 20 carbon atoms, alkanoyl of 1 to 18 carbon atoms, alkoxy of 1 to 18 carbon atoms, cycloalkoxy of 5 to 12 carbon atoms, aryloxy of 6 to 10 carbon atoms, hydroxyalkoxy of 2 to 6 carbon atoms, alkoxyalkoxy of 2 to 20 carbon atoms, aralkoxy of 7 to 15 carbon atoms or bicyclo or tricycloaliphatic oxy radical of 7 to 12 carbon atoms;
• R and R.sub.1 are independently alkyl of 1 to 4 carbon atoms or together R and R.sub.1 are pentamethylene;
• X is a direct bond,
• n is 2-4,
• when n is 2, T is alkylene of 2 to 12 carbon atoms, arylene of 6 to 10 carbon atoms, xylylene, --CH.sub.2 CHOHCH.sub.2 --, --CH.sub.2 CHOHCH.sub.2 --O--G.sub.1 --O--CH.sub.2 CHOHCH.sub.2 --, --CH.sub.2 --phenylene--COO--G.sub.1 --OCO--phenylene--CH.sub.2 --, --CH.sub.2 CH.sub.2 --COO--G.sub.1 --OCO--CH.sub.2 CH.sub.2 -- or --CH.sub.2 --phenylene--CH.sub.2 --OCO--G.sub.1 --COO--CH.sub.2 --phenylene--CH.sub.2 --,
• G.sub.1 is alkylene of 2 to 12 carbon atoms, arylene of 6 to 10 carbon atoms or cycloalkylene of 6 to 12 carbon atoms,
• when n is 3, T is alkanetriyl of 3 to 6 carbon atoms, or is ##STR13## and when n is 4, T is alkanetetrayl of 4 to 6 carbon atoms.