| 摘要 |
Compounds of the formula I <IMAGE> (I) wherein A is alkylidene or optionally alkylated vinylene, B is a group of the formula II <IMAGE> (II) wherein R1 and R2 are alkyl, R3, R4 and R5 are hydrogen or alkyl and n is 0, 1 or 2 and m is 1 or 2, and X is identical to B if m equals 1 or X is methylene if m equals 2, as stabilisers for organic material.
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