2,4-二(4-联苯基）-6- (2-羟基-4-烷氧基苯基)-1,3,5-均三嗪紫外线吸收剂的合成与性能

Synthesis and Properties of 2,4-Bisbiphenyl-6-(2-hydroxyl-4-

摘要:

以三聚氯氰为原料，通过格氏反应、Friedel-Craft反应合成了2-氯-4,6-二(4-联苯基）-1,3,5-均三嗪（Ⅳ）；化合物Ⅳ在碱性条件下与溴代烷反应合成了3种2,4-二(4-联苯基）-6- (2-羟基-4-烷氧基苯基)-1,3,5-均三嗪（Ⅴ1~3）。用FTIR、MS、1HNMR对化合物Ⅴ1~3结构进行了确证，用TGA、UV-vis对化合物Ⅴ1~3的热稳定性、紫外吸收及光稳定性进行了测定。结果表明，与市售商品化紫外线吸收剂UV-1577相比，化合物Ⅴ1~3的T5(降解5%时的温度)提高了40~60℃；具有更宽的吸收范围和更高的最大摩尔吸收系数（εmax）。化合物Ⅴ1~3的εmax分别为：79448.28 L/（molcm）(max=318.5 nm),80873.51 L/（molcm）(max=319 nm),76774.7 L/（molcm）(max=319 nm)。

Abstract:

Cyanuric chloride was used as raw material to synthesize 2-chloro-4,6-bisbiphenyl-1,3,5-triazine(Ⅳ) successfully via Grignard reaction and Friedel-Craft reaction.Three 2,4-bisbiphenyl-6-(2-hydroxyl-4-alkoxyl)-1,3,5- triazine compounds(Ⅴ1~3) were synthesized by compound Ⅳ and bromoalkane in the presence of K2CO3.The structures of compounds Ⅴ1~3 were characterized by FTIR,MS and 1HNMR. Thermal stability,ultraviolet absorption and light stability of compounds Ⅴ1~3 were tested by TGA and UV-vis.T5 of compounds Ⅴ1~3 was raised 40～60℃ related to UV-1577．Maximum molar absorption coefficient(εmax) of compounds Ⅴ1~3 was 79448.28 L/（molcm）(max=318.5 nm),80873.51 L/（molcm）(max=319 nm),76774.7 L/（molcm）(max=319 nm) respectively.