以三聚氯氰为原料,通过格氏反应、Friedel - Craft反应及醚化反应合成了3种新型三嗪类紫外线吸收剂2,4-二(2-羟基-4-烷氧基)苯基-6-(4-联苯基)-1,3,5-三嗪.采用FTIR,1H NMR,MS等方法对3种紫外线吸收剂的结构进行了表征；考察了它们的紫外吸收性能、光稳定性及热稳定性.实验结果表明,与市售产品2-(2-羟基-4-己氧基)苯基-4,6-二苯基-1,3,5-均三嗪(商品名“DssorbUV- 1577”)相比,该3种三嗪类紫外线吸收剂在280～380nm宽范围内具有更强的紫外吸收性能,3种紫外线吸收剂的最大摩尔吸收系数分别为:50 502.05,52 363.88L./(mol· cm)；45 123.59,49 892.84 L/( mol·cm)；52 282.02,53 291.56 L/(mol·cm).该3种紫外线吸收剂的光稳定性与Dssorb UV- 1577相当,热稳定性优于Dssorb UV-1577.%Three new s-triazine UV absorbents 2, 4-bis ( 2-hydroxyl-4-alkoxyl) phenyl-6-( 4-biphenyl)-l ,3, 5-triazine containing different alkoxyls were synthesized from cyanuric chloride by Grignard reaction, Friedel-Craft reaction and etherification reaction. The target compounds were characterized by means of FTIR, 'H NMR and MS. Ultraviolet absorption performances, light stabilities and thermal stabilities of the target compounds were tested. The results showed that ultraviolet absorption performances of the target compounds in the range of 280 - 380 run were stronger than that of the commercialized product 2-(2-hydroxy1-4-heoxyl) phenyl-4,6-diphenyl-l ,3,5-triazine (Dssorb UV-1577). The maximum molar absorption coefficients of the three target compounds are 50 502.05 and 52 363.88 L/( mol ·cm), 45 123.59 and 49 892. 84 L/( mol · cm), and 52 282.02 and 53 291.56 L/(mol · cm), respectively. The target compounds have the similar light stability to Dssorb UV-1577 and their thermal stabilities are higher than that of Dssorb UV-1577.
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