新型紫外线吸收剂1,4-二芳基-1,3-丁二炔类化合物的合成及其性能研究

本文以含有端基炔的芳硫醚为原料,碘苯二乙酯为氧化剂,氯化亚铜为催化剂,室温下反应30 min,合成了1, 4-二(2-芳硫基苯基)-1, 3-丁二炔化合物。通过~1HNMR、¹³CNMR等对其进行了结构表征,并研究了其光学性质,以及作为紫外线吸收剂在紫外光固化涂料中的应用。结果表明:该类化合物能够有效吸收270～360 nm的紫外光,且光降解程度小,并具有与树脂、单体相容性好、无气味等特点。同时,合成的目标化合物在光固化过程中不参与自由基体系的固化,且增强了涂料及固化涂层的光稳定性,有益于紫外光固化涂料的存储,是一类具有发展前景的紫外光吸收剂。

Synthesis and Properties of a Novel Ultraviolet Absorber 1, 4-Diaryl-1, 3-butadiyne

In this paper, aryl sulfide containing terminal alkyne was used as raw material, (diacetoxyiodo)benzene was used as oxidant, cuprous chloride was used as catalyst, and 1,4-bis(2-arylthiophenyl)-1,3-butadiyne was synthesized by reaction at room temperature for 30 minutes. The 1,3-butadiyne compound was characterized by ¹HNMR, ¹³CNMR, etc., and its optical properties and application as an ultraviolet absorber in UV-curable coatings were investigated. The results show that the compound can effectively absorb ultraviolet light from 270 nm to 360 nm and has strong absorption intensity and low degree of UV degradation. It has good compatibility with resin, monomer and no odor. At the same time, it does not participate in the curing of free radical systems, which enhances the light stability of coatings and cured coatings, and is beneficial to the storage of UV-curable coatings. It is a kind of ultraviolet light absorber with promising prospects.