| 摘要 |
The compounds of the formula (I) <CHEM> in which R1 is C1-C8-alkyloxy, allyloxy, allylamino, di(C1-C4-alkyl)amino, diallylamino, a 5-membered to 7-membered nitrogen containing heterocyclic group with the nitrogen atom linked to the triazine ring, or a group of the formula (II), <CHEM> R2 is hydrogen, O<.>, OH, NO, CH2CN, C1-C8-alkyl, allyl, benzyl, C1-C8-acyl, C1-C18-alkyloxy, C5-C12-cycloalkyloxy or OH-monosubstituted C2-C4-alkyl, R3 and R5 independently are hydrogen, C1-C12-alkyl, C5-C12-cycloalkyl, C7-C9-phenylalkyl, tetrahydrofurfuryl, C2-C4-alkyl monosubstituted by OH, by C1-C4-alkyloxy or by di(C1-C4-alkyl)amino, or a group of the formula (III) <CHEM> with R2 as defined above, R4 is hydrogen, C1-C12-alkyl or cyclohexyl and n is an integer from 2 to 6, are useful as light stabilizers, heat stabilizers and oxidation stabilizers for organic materials, in particular synthetic polymers.
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