| 摘要 |
Sulphoxides of alkylthiomethylphenols of the formula I …<IMAGE>… in which … … R1 is hydrogen, C1-C20-alkyl, C2-C18-alkenyl, C5-C7-cycloalkyl, C5-C7-cycloalkenyl, phenyl or C7-C9-phenylalkyl, … R2 represents hydrogen, C1-C20-alkyl, C2-C18-alkenyl, C5-C7- cycloalkyl, C5-C7-cycloalkenyl, phenyl, C7-C9-phenylalkyl or a radical -CH2-SO-R5 in which R5 is C8-C20-alkyl which is optionally interrupted by -O-, -S- or -SO- groups, C2-C12-alkyl which is substituted by one to two hydroxyl groups, or phenyl, benzyl, -(CH2)nCOOR6 or -CH(CH3)COOR6 in which R6 is C1-C20-alkyl and n is 1 or 2, … R3 is hydrogen or a group -CH2-SO-R5 in which R5 is as defined above, and … R4 has the same meanings as R2 with the proviso that only one of the radicals R2, R3 or R4 represents the group -CH2-SO-R5 and that, if R4 is -CH2-SO-R5 and R1 and R2 are at the same time tert.-butyl or tert.-amyl, R5 is not C8-C14-alkyl, … or mixtures of these compounds with the corresponding non-oxidised compounds are suitable for stabilising organic materials which are sensitive to oxidative, thermal and/or light-induced degradation. |
