abstract |
The present invention relates to oxygen-substituted hindered amines of formula I or II, wherein for example R 2 , R 3 , R 5 , R 6 , R 8 , R 9 , R 11 , R 12 , R 13 , R 14 are n-butyl , Z 1 -Z 10 are propoxy and R 1 , R 4 , R 7 , R 10 , R 13 are 2,2,6,6-tetramethyl-1-propoxypiperidin-4-yl. Compositions comprising compounds of formula I or II and organic materials susceptible to oxidative, thermal or light-induced degradation are further disclosed. Optionally contain other additives. |