Using 2-[bis（alkylthio）methylene]-3-oxo-N-o-tolylbutanamides 1 as odorless thiol equivalents, an efficient and odorless synthesis of thioethers has been developed. Promoted by NaOH in EtOH, the cleavage of 1 commenc...Using 2-[bis（alkylthio）methylene]-3-oxo-N-o-tolylbutanamides 1 as odorless thiol equivalents, an efficient and odorless synthesis of thioethers has been developed. Promoted by NaOH in EtOH, the cleavage of 1 commences to generate thiolate anions, and the generated thiolate anions then react with halides to give various thioethers in good yield. It is noteworthy that only a very faint odor ofthiols can be perceived during both the reaction and the workup.展开更多
为了降低光引发剂固化前后释放的味道,一方面通过多官能团的异氰酸酯预聚物对其进行改性,制备环保型光引发剂;另一方面,研究光引发剂在漆膜中的光解反应动力学,优化光固化工艺来减少漆膜的气味。通过正交试验优化低VOC紫外光固化涂料的...为了降低光引发剂固化前后释放的味道,一方面通过多官能团的异氰酸酯预聚物对其进行改性,制备环保型光引发剂;另一方面,研究光引发剂在漆膜中的光解反应动力学,优化光固化工艺来减少漆膜的气味。通过正交试验优化低VOC紫外光固化涂料的配方为:25%的环氧丙烯酸树脂、43%的聚氨酯丙烯酸树脂、22%的二官能团活性稀释剂、7%的三官能团活性稀释剂、3%的改性光引发剂。优化的UV光固化涂装工艺参数为:膜厚50μm,UV灯管功率为1 k W,传送带速率为1 m/min。制备的涂料和漆膜几乎没有气味,漆膜的VOC排放为0.5%,且漆膜性能较佳,适用于环保木器UV涂料及其涂装。展开更多
基金This work was supported by the National Natural Science Foundation of China （No. 20572013） and the Doctoral Foundation of Anshan Normal University.
文摘Using 2-[bis（alkylthio）methylene]-3-oxo-N-o-tolylbutanamides 1 as odorless thiol equivalents, an efficient and odorless synthesis of thioethers has been developed. Promoted by NaOH in EtOH, the cleavage of 1 commences to generate thiolate anions, and the generated thiolate anions then react with halides to give various thioethers in good yield. It is noteworthy that only a very faint odor ofthiols can be perceived during both the reaction and the workup.
文摘为了降低光引发剂固化前后释放的味道,一方面通过多官能团的异氰酸酯预聚物对其进行改性,制备环保型光引发剂;另一方面,研究光引发剂在漆膜中的光解反应动力学,优化光固化工艺来减少漆膜的气味。通过正交试验优化低VOC紫外光固化涂料的配方为:25%的环氧丙烯酸树脂、43%的聚氨酯丙烯酸树脂、22%的二官能团活性稀释剂、7%的三官能团活性稀释剂、3%的改性光引发剂。优化的UV光固化涂装工艺参数为:膜厚50μm,UV灯管功率为1 k W,传送带速率为1 m/min。制备的涂料和漆膜几乎没有气味,漆膜的VOC排放为0.5%,且漆膜性能较佳,适用于环保木器UV涂料及其涂装。
