| 摘要 |
A composition comprising a) a polystyrene, a substituted polystyrene, a copolymer or terpolymer of styrene or substituted styrene, a polycarbonate, a polyester carbonate, a polyurethane, a polyamide, a copolyamide, a polyacetal or a polyphenylene oxide,b) at least one compound of formula I <IMG> (I), wherein R1 is methyl or ethyl, R2 is C2-C30 alkyl and R3 is C1-C4 alkyl; and c) at least one compound of formula II <IMG> (II), wherein R3 is C1-C4 alkyl, R4 is tert-butyl or cyclohexyl, L-CH2-or tricyclo¢5.2.1.02.6!decane-3,8-ylene, and n ? 1.
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