| 摘要 |
The invention relates to compounds of formula (I), in which R is H, C1C12alkyl, phenyl, (C1-C4alkyl)phenyl, phenyl-C1-C4alkyl, halogen, C2C12alkynyl or C1-C12alkoxy, X is NR', NCOR' or O, and Y is R'' or R''-CO-, where R'' is C2-C6alkenyl or C3-C6 alkenyl which is interrupted by -O-, -CO-, NR'-, -S-, -SO-, -SO2- or phenylene, or (C1-C4alkenyl)phenyl, and R' is H or C1-C12alkyl, or -X-Y is the group of formula (a) or (b), and homopolymers and copolymers thereof and copolymers with further polymerizable monomers. These compounds and their copolymers are advantageously used, for example, for stabilizing organic material against the damaging effect of light, oxygen and/or heat.
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