Abstract Hindered amine light stabilizers are used to protect polymers from heat- and light-induced degradation. In this study the oligomeric stabilizer Tinuvin 622 was analysed in-depth employing high performance liquid chromatography/time of flight mass spectrometry (HPLC/TOF-MS) to differentiate products of different manufacturers in respect of their terminating groups and oligomer length. Additionally, the behaviour of the stabilizer in uncured and cured polyester powder coatings was investigated regarding its interaction with the other coating components and chemical changes during the crosslinking process. The extraction efficiency was determined as a function of oligomer length and coating colour.

中文翻译：

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使用高效液相色谱/飞行时间质谱法对聚酯粉末涂料中受阻胺光稳定剂 Tinuvin 622 的分析和归宿

摘要 受阻胺光稳定剂用于保护聚合物免受热和光诱导的降解。在本研究中，我们使用高效液相色谱/飞行时间质谱 (HPLC/TOF-MS) 对低聚稳定剂 Tinuvin 622 进行了深入分析，以区分不同制造商的产品的端基和低聚物长度。此外，还研究了稳定剂在未固化和固化的聚酯粉末涂料中的行为，涉及其与其他涂料组分的相互作用以及交联过程中的化学变化。提取效率被确定为低聚物长度和涂层颜色的函数。