abstract |
The present invention relates to compounds of the general formula (I)n n n In the above formula,n n n n is 1 or 2, A is CH or a nitrogen atom, and other radicals of R 1 R1 to R25R 25 are as defined in claim 1.n n n Compounds of formula (I) may be usefully used to stabilize organics against the deleterious effects of light, oxygen and / or heat. |