| 摘要 |
A light screening agent, which contains a compound of the general formula <IMAGE> I wherein R and R' are alkyl, hydroxyalkyl, alkenyl, alkynyl, or alkyl ether radicals substituted by one or more hydroxy and/or alkoxy groups and Ar represents one of the residues <IMAGE> in which R2 is hydroxy, alkyl, alkenyl, alkynyl, or an alkyl, alkenyl, alkynyl ether residue or polyalkyl ether residue optionally substituted by one or more hydroxy and/or alkoxy groups and R3 is hydrogen or signifies a residue R2 and in which the hydroxy group is present in the alpha -position to the bonding to the triazine nucleus, with the number of C and O atoms present in R and R' being a total of 8 to 42, especially 8 to 18, and the number of O atoms corresponding to at most half of the C atoms.
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