The temperature makes the difference
WHICH HARDENERS AND WHICH REDUCERS SHOULD BE USED IN 2K PU TOPCOATS AND CLEARCOATS? The temperature table provides a clear and straightforward overview about what product is suited for use at a particular temperature.
The material combination (hardener and reducer) may be changed depending on temperature and object size. The hardeners and reducers recommended below for the various temperature ranges are for overall resprays. For panel repairs, select the material combination indicated for the next lower temperature range. Please observe current technical data sheets!