| abstract |
Compounds of formula I (FORMULA I) wherein R1, and R2, independently of each other indicate hydrogen, C1-C24-alkyl, C1, -C4-alkyl substituted with phenyl, C5-C8-alkyl-cycloalkyl not substituted or replaced with C1 C4-alkyl, unsubstituted phenyl or phenyl replaced with C1-C4-alkyl, not both radicals R1, and R2 being hydrogen at the same time, n indicates a number between 3 and 8, R3, indicates C1-C18- alkyl, C2-C8-alkyl interrupted choirs -0-, -5- or-NR4-, C5-C8-cycloalkyl not substituted or replaced with C1-C4-alkyl, C3-C4, -alkyl substituted with phenyl, unsubstituted phenyl or phenyl substituted with C1-C12-alkyl or indicates a radical - (CH2) m-CCOR1 or (FORMULA II) or R1 indicates C3-C18-alkyl, C5-C8-cycloalkyl not substituted or substituted with C1-C4-alkyl, benzyl or phenyl, R5, is hydrogen, methyl, benzyl or a radical -OR7, m is 1 or 2, X represents 0, S or NR6 and R6 indicates hydrogen or C1-C12-alkyl or re R3 and R6, together with the nitrogen atom to which they are linked, indicate a radical (FORMULA III) R7 indicates C1-C12-alkyl, they are suitable as stabilizers for organic products. |