| 摘要 |
Novel compounds of the formula I <IMAGE> in which n is 0, 1 or 2, R and R1 independently of one another are C1-C4-alkyl or together are a 2,3-dehydropentamethylene radical, R2 and R3 independently of one another are hydrogen, C1-C4-alkyl or C5-C6-cycloalkyl, and R4, R5, R6 and R7, in the event that n = 1, independently of one another are hydrogen or C1-C4-alkyl, and, in the event that n = 0 and in the event that n = 2, are hydrogen, are described as stabilisers for organic materials against thermal, oxidative or light-induced degradation.
|
