Ultraviolet absorbers and hindered amine light stabilizers are two kinds of efficient photostabilizers, which have different mechanisms. It is possible to make a synergistic interaction if introducing these two types of photostabilizing fragments into one molecule. In this article, two novel multifunctional photostabilizers UVH‐1 and UVH‐2 containing UVA and HALS fragments were synthesized from a 2‐hydroxyphenylbenzotriazole compound (UV‐P). UVH‐1 was synthesized by a three‐step synthetic strategy via esterification, bromination, and amination. UVH‐2 was facilely synthesized by a one‐step three‐component Mannich reaction. The chemical structure of UVH‐1 and UVH‐2 were confirmed by Fourier‐transform infrared (FTIR), ¹H NMR, ¹³C NMR, and mass spectrometry. Both multifunctional photostabilizers UVH‐1 and UVH‐2 show good ultraviolet absorption performance and excellent light stabilizing effect when applied to photoprotection of dye, polyacrylonitrile, and polyurethane in the solution state, in which UVH‐1 shows better light stabilization performance even on polymers. It can be concluded that a combination of the HALS and UVA active groups can enhance the photoprotective effect on dyes and polymers and also increase the molecular weight of the additive to overcome escape of the photostabilizer from the polymer matrix. J. VINYL ADDIT. TECHNOL., 26:259–267, 2020. © 2019 Society of Plastics Engineers

中文翻译：

---

包含UVA和HALS部分的新型多功能光稳定剂的合成及其对聚合物和染料的影响

紫外线吸收剂和受阻胺类光稳定剂是两种有效的光稳定剂，其作用机理不同。如果将这两种类型的光稳定片段引入一个分子，则可能产生协同作用。在本文中，由2-羟基苯基苯并三唑化合物（UV-P）合成了两种新型的多功能光稳定剂UVH-1和UVH-2，其中包含UVA和HALS片段。UVH-1是通过三步合成策略通过酯化，溴化和胺化合成的。UVH-2通过一步三组分曼尼希反应轻松合成。UVH-1和UVH-2的化学结构通过傅里叶变换红外（FTIR），¹ H NMR，^13确认1 H NMR和质谱。多功能光稳定剂UVH-1和UVH-2在溶液状态下用于染料，聚丙烯腈和聚氨酯的光保护时，均表现出良好的紫外线吸收性能和出色的光稳定效果，其中UVH-1甚至在聚合物上也显示出更好的光稳定性能。可以得出结论，HALS和UVA活性基团的组合可以增强对染料和聚合物的光保护作用，并且还可以增加添加剂的分子量，以克服光稳定剂从聚合物基质中逸出。J.乙烯基添加物。TECHNOL。，26：259–267，2020.©2019塑料工程师协会