| 摘要 |
The invention relates to tanning aids exhibiting a high protection factor, comprising polymethylmethacrylate moulded bodies. The transparency of the polymethylmethacrylate moulded body at 380nm is at least 40% and the polymethyimethacrylate moulded body comprises 0.005 0.1 wt. % of at least one Triazin compound, in relation to the weight of said polymethylmethacrylate moulded body, according to formula (I) wherein R = Halogen, C1-C22-Alkyl, C 1,-C22-alkoxy, C1,-C22-hydroxyalkoxy, C1,-C22-alkoxyalkyl, -NHR1, -N(R1) 2, or a radical of (la) X1, X2 and X3 independently represent -CONHR1, -NR2R3, - S02R4, -CN, -COR5 oder -COOR6; R1 = hydrogen, C1-C22-alkyl, C6- C20 -aryl, C7-C20-aralkyl, C5 C8- cycloalkyl, or a radical of formula (Ib) wherein A1 = C1 -C8-alkyl, C5-C6-cycloalkyl, C6-C 20-Aryl, C7-C20-aralkyl; and m1 = 1-10, R2 and R3 independently represent hydrogen, C1- C22 alkyl, C6-C8 cycloalkyl, C6-C 20 aryl, C7-C20-aralkyl, a radical of fromula (1b) or a radical of formula COR1; R4 = hydrogen, C1 -C22 alkyl, C6-C8 cycloalkyl, C6-C 20 -aryl, C7-C20-aralkyl, a radical of formula NR2R3; R5 and R6 independently represent hydrogen, C1-C22 alkyl, C6-C 8 cycloalkyl, C6-C20 aryl, C7-C20 -aralkyl or a radical of formula (1b); X4,X5 and X 6 independently represent hydrogen or hydroxy.
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