发明授权
- 专利标题： Method for determining the shade stability of lacquers
- 专利标题（中）： 确定漆颜色稳定性的方法
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申请号： US09744639申请日： 2001-05-15
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公开(公告)号： US06628393B1公开(公告)日： 2003-09-30
- 发明人: Bernd Biallas , Wolfgang Duschek , Werner Rotz , Harald Berlin
- 申请人： Bernd Biallas , Wolfgang Duschek , Werner Rotz , Harald Berlin
- 优先权： DE19833859 19980728
- 主分类号： G01J346
- IPC分类号： G01J346
摘要：
In a method of determining the shade stability of paints, the total color difference &Dgr;E(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 &sgr;(FT) of the plot &Dgr;E(FT) is determined, which represents a useful parameter for the shade stability. Alternatively to &sgr;(FT), it is also possible to determine the limiting film thickness FTlim at which the total color difference &Dgr;E(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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