| 摘要 |
The present invention relates to ultraviolet light absorbing compounds having the formula I and compositions containing these compounds in combination with polymers and/or carriers: wherein; R1 is hydrogen or a halogen atom or a straight-chain or branched alkyl group, an alkoxy group or a carboalkoxy group; R2 and R2′can be the same or different and individually are selected from the group consisting of hydrogen, an unsubstituted or substituted straight-chain or branched alkyl group, an alkoxy group, a carboxyalkyl group, a carboalkoxy, a carboxyl group, an hydroxyl group, and a halogen atom. R3, R4 and R5 can be the same or different and individually are selected from the group consisting of hydrogen, a straight-chain or branched alkyl group, an alkylaryl group, an alkoxy group, a phenyl or substituted phenyl group, a cycloalkyl group, a carboalkoxy group, an arylalkyl group, an hydroxyl group and a halogen atom.
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