abstract |
Stabilisers of formula I ##STR1## wherein R 1 and R 2 may be C 1 -C 5 alkyl, the substituents R 3 to R 8 may be hydrogen, the variable n may be 1 or 2, and, when n is 1, A may be an alkoxy radical, and, when n is 2, A may be a diamine radical. |