| abstract |
Suitable stabilizers for organic material are a mixture comprisingn A. at least one oligomeric compound, comprising repeat units of the formula (I), nn n n n n n n n n n n n in which the meanings of the symbols are as follows: n R 1 is hydrogen, C 1 -C 6 -alkyl, formyl, C 2 -C 6 -alkanoyl, C 1 -C 12 -alkoxy, C 5 -C 6 -cycloalkoxy, cyanomethyl, 2-hydroxyethyl, benzyl or a radical of the formula —CR′═—H—CO—OR″, where n R′ is hydrogen, C 1 -C 6 -alkyl or a radical of the formula —CO—OR″, and n R″ is C 1 -C 18 -alkyl, C 5 -C 8 -cycloalkyl, C 7 -C 18 -aralkyl, phenyl, or tolyl; n R 2 is a mixture composed of C 14 -C 28 -alkyl groups, where two of these alkyl groups whose number of carbon atoms is not permitted to differ by more than two respectively make up at least 30% of this mixture; n R 3 and R 4 , independently of one another, are C 1 -C 6 -alkyl; n and n n n B. at least one compound of the formula (II) or (Ill) n n n n n n n n n n n n n n where the meanings of the symbols and indices are as follows: n n and m, independently of one another, are a natural number from 2 to 22, n and n R 1 , R 3 and R 4 , independently of one another, have the meanings given in formula (I). |