| 摘要 |
Synergistic light stabilizer combinations comprising (a) a compound of formula I <IMAGE> I wherein m is 2 or 3 and R is hydrogen, C1-C4alkyl, 2-hydroxyethyl, 2-hydroxypropyl, allyl, benzyl, acetyl or acryloyl, and (B) a compound which contains at least one group of formula II <IMAGE> II and has a molecular weight higher than 700, are most suitable for stabilizing organic polymers, especially polyolefins.
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