新型防伪油墨用有机荧光剂的合成及其研究

Research on synthesis of a new organic fluorescent reagent used in falsificationresistant ink

以邻氨基苯甲酸为母体，采用“三步”法，合成出高纯度的２－［（２－对甲苯磺酰氨基）苯基］－４－（３Ｈ）－喹唑啉酮。对反应条件进行了研究，鉴定出其结构，确定了该物质的一系列光物理参数。通过实验还发现该物质的光稳定和耐酸、碱等性能均较好，是一类荧光强度高、激发时可见光新颖、清晰而持久的防伪用荧光剂。

In this paper,the highly pure 4-(3-H)-quinazolinone was synthesized by three-step method from o-aminobenzoic acidThe conditions of reaction were studied and structure was confirmed through various meansA series of light parameters were measuredThe results showed that light stability,resistance to alkali and acid were satisfactoryThe substance exhibited good fluorescene intensity and gave off desirable shades of visible light when irradiated with ultraviolet lightSuch effects were used as falsificationresistant fluorescent reagent