本文件描述了两种通过薄层色谱法鉴定原橡胶、未硫化复合橡胶或橡胶制品中可能存在的抗降解剂（抗氧化剂、抗臭氧剂和稳定剂）的方法。 方法A是一种简化方法，用于识别已知材料，并可用于检查是否存在预期存在的特定抗降解剂。 方法B是一种更详细的方法，可以获得更大程度的斑点分离，因此可以用于检测和识别未知的抗降解剂。 这些方法适用的抗降解剂包括磷化聚烷基酚、取代双酚、仲胺、取代甲酚和取代对苯二胺。当有标准色谱图时，可以在相同条件下检查其他类型的抗降解剂。

This document describes two methods for identification of antidegradants (antioxidants, antiozonants and stabilizers) which can be present in raw rubber, unvulcanized compounded rubber, or rubber products, by thin layer chromatography. Method A is a simplified method that provides for the identification of known materials and can be used to check the presence or absence of a particular antidegradant which is expected to be present. Method B is a more detailed method that enables a greater degree of separation of the spots to be obtained and therefore can be used to detect and identify an unknown antidegradant. Antidegradants to which these methods are applicable include phosphited polyalkyl phenols, substituted bisphenols, secondary amines, substituted cresols and substituted p-phenylenediamines. Examination for other types of antidegradants is possible under the same condition when there is a standard chromatogram.