| abstract |
The invention concerns tetramethylpiperidine-containing copolymers comprising between 1 and 100 mol % identical or different monomer units of general formula (I), in which R?1 = COOR7, COR8, CONR8R9, CN; R2¿ = H, C¿1?-C12 alkyl, COOR?7, COR8, CONR8R9, CN; R3¿ = H, methyl, ethyl, propyl; R6 = H, C¿1?-C8 alkyl; R?7¿ = H, C¿1?-C8 alkyl, C5-C8 cycloalkyl, C3-C5 alkenyl, substituted or nonsubstituted phenyl; R?8 and R9¿ = H, C¿1?-C12 alkyl, C5-C8 cycloalkyl, substituted or nonsubstituted phenyl; X = oxygen, sulphur, NR?6¿, and further monomers. The invention further concerns processes for preparing the copolymers, the use thereof as stabilizers or agents for protecting against light, and organic material containing the copolymers. |