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Synthesis of ultraviolet absorber UV234

Author: JiangYongBo
Tutor: YangJinZong;ShaoYuJing
School: Dalian University of Technology
Course: Fine Chemicals
Keywords: UV absorber Synthesis Cumylphenol Triazole Molar extinction coefficient O- nitroaniline Ultraviolet absorption spectrum Reduction Synthesis Substituent Aralkyl
CLC: TQ314.257
Type: Master's thesis
Year: 2002
Downloads: 274
Quote: 2
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Abstract


This paper studied the phenol and α- methyl styrene as raw material by alkylation of 2,4 - and 2,4 dicumyl phenol - dicumyl phenol and o -nitroaniline by the diazonium salt coupling, reducing synthesis of UV absorber 2 - ( 2' - hydroxy-3 ' , 5' -bis -α, α- dimethylbenzyl ) benzotriazole ( hereinafter referred to as UV234) process : To investigate the various conditions of the aralkyl group , coupling and reduction reaction. effects of different substituents and different solvents on benzotriazole ultraviolet absorber effect ; against UV234, UV Ⅱ, UV329 and UV326 for thermal gravimetric analysis , the effect of different substituents on the benzotriazole ultraviolet absorber thermal stability resistance of .

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CLC: > Industrial Technology > Chemical Industry > Molecular compound Industries ( polymer industry ) > Raw materials and auxiliary materials > Synthetic polymer compound > Ultraviolet absorbers
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