| abstract |
Compounds of the formula (I) <IMAGE> (I) wherein R1 and R5 are independently hydrogen, C1-C12-alkyl, C5-C7-cycloalkyl or a group of the formula (II), <IMAGE> (II) R2, R3 and R4 are independently C2-C12-alkylene, R is a group of the formula (III) <IMAGE> (III) wherein R6 is C2-C8-dialkylamino, C1-C4-alkoxy, a 5-membered to 7-membered heterocyclic group containing a nitrogen atom which is attached to the triazine residue or a group of the formula (IV), <IMAGE> (IV) R7 and R8 are independently C1-C12-alkyl, C5-C7-cycloalkyl, benzyl or a group of the formula (II), subject to the proviso that both, R1 and R5 are different from hydrogen, if R is a group <IMAGE> are useful as light stabilizers, heat stabilizers and/or oxidation stabilizers for organic materials, in particular synthetic polymers. |