含二苯甲酮的香豆素型光稳定剂的合成及应用  

Synthesis of Coumarin Light Stabilizer Containing the Structure of Benzophenone and Its Applications

作　　者：王鹏[1] 张光华[1] 相瑞[1] 付小龙[1] 

机构地区：[1]陕西科技大学教育部轻化工助剂化学与技术重点实验室,陕西西安710021

出　　处：《精细化工》2014年第2期249-254,共6页Fine Chemicals

基　　金：陕西省自然科学基金项目(2009JM2010);传化集团绿色轻化工助剂研发中心基金(20124932)~~

摘　　要：以对甲苯磺酸为酸性催化剂,使间苯二酚和乙酰乙酸乙酯发生脱水缩合反应,合成了具有紫外线吸收性能的7-羟基-4-甲基香豆素。通过三聚氯氰,将7-羟基-4-甲基香豆素和紫外线吸收剂2,4-二羟基-二苯甲酮引入同一分子中,再引入水溶性分子牛磺酸,合成了含二苯甲酮的香豆素型光稳定剂。采用红外光谱和核磁共振氢谱等手段对合成物质进行了结构表征,运用紫外光谱、荧光光谱测试其光学性质,并通过紫外光加速老化实验考察了合成产物对高得率浆纸张的抗紫外光老化效果。结果表明,在各自的最佳用量下,经48 h光老化处理,合成的香豆素型光稳定剂对纸张的光老化抑制效果优于单一的反应型紫外吸收剂及传统的荧光增白剂,白度分别少下降了2.14%ISO和3.13%ISO。With p-toluenesulfonic acid as acidic catalyst ,employing resorcinol and ethyl acetoacetate ,7- hydroxy-4-methyl coumarin with UV absorption condensation reaction. A coumarin light stabilizer properties was synthesized through dehydration which contains the structure of benzophenone was synthesized by introducing 7-hydroxy-4-methyl coumarin, ultraviolet absorber 2, 4-dihydroxy- benzophenone and taurine into the same molecule through the medium of cyanuric chloride. The molecular structures were characterized by means of IR spectra and ~ HNMR, the optical properties were measured by UV spectra and fluorescence spectra, and, with the target product used as the surface sizing agent on handsheet of high yield pulps, the effect of anti-UV aging was evaluated using the ultraviolet aging apparatus. The results show that, with the optimal dosage, the coumarin light stabilizer was superior to reactive UV-stabilizer or the conventional fluorescent brighteners in terms of the effect of anti-UV aging, and the declining brightness of handsheet relative to them were 2. 14% ISO and 3.13% ISO respectively.

关 键 词：7-羟基4-甲基香豆素 2  4-二羟基-二苯甲酮 光稳定剂 抗紫外老化效果 造纸化学品 

分 类 号：TQ314.245.2[化学工程—高聚物工业]