| 摘要 |
A product of the formula (I) <IMG> (I) in which n is a number from 2 to 14; the radicals R1 are for example hydrogen or C1-C8alkyl; R2 is for example C2-C12alkylene; the radicals A are for example C1-C8acyl; the radicals B are independently of one another -OR3, -N(R4)(R5) or a group of the formula <IMG> ; R3, R4 and R5, which are identical or different, are for example hydrogen or C1C18alkyl, or-N(R4)(R5) is additionally a group of the formula <IMG> with Y being -O-, -CH2-, -CH2CH2- or >N-CH3; X is -O- or >N-R6; R6 is for example hydrogen or C1-C18alkyl ; R is preferably a group of the formula <IMG> ; with the proviso that in the individua l recurrent units of the formula (I), each of the radicals B, R, R1 and R2 has the same or a different meaning. The indicated product is useful as light stabilizer, heat stabilizer and oxidati on stabilizer for organic materials, in particular synthetic polymers.
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