General methods of test for pigments and extenders — Part 21: Comparison of heat stability of pigments using a stoving medium
颜料和填充剂Spart 21的一般试验方法:使用烘干介质比较颜料的热稳定性
The method is intended for comparing the heat stability by specifying the temperatures of heating and the time of heating; it may also be used for determining the heat resistance of a pigment. The comparison of heat stability is carried out against that of an agreed sample.