| 摘要 |
A mixture containing two different compounds of the formula (I) (See Fig. I) wherein n is an integer from 2 to 22 and R is hydrogen, C1-C8alkyl, -O-, -OH, -NO, -CH2CN, C1-C18alkoxy, C5-C12cycloalkoxy, C3-C6alkenyl, C3-C6alkynyl, C1-C8acyl or C7-C9phenylalkyl unsubstituted or substituted on the phenyl by 1, 2 or 3 C1-C4alkyl; the weight ratio of the two compounds being 1:20 to 20:1, is useful as stabilizer for organic materials against degradation induced by light, heat or oxidation.
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