| 摘要 |
In a method of determining the shade stability of paints, the total color difference DeltaE(FT) between the color at the film thickness FT and the color at a predetermined film thickness FT0 is measured for different film thicknesses FT. Subsequently, the slope sigma(FT) of the plot DeltaE(FT) is determined, which represents a useful parameter for the shade stability. Alternatively to sigma(FT), it is also possible to determine the limiting film thickness FTlim at which the total color difference DeltaE(FT) passes below a predetermined limit. The method of determining the shade stability is additionally employed in order to optimize paint formulations.
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