Decolourisation of isophorone by exposure to UV-light rays

摘要

The present invention is a process for reducing the colour intensity of discoloured isophorone, said process comprising exposing the discoloured isophorone to UV radiation suitably having a wavelength in the region of about 3 70-400 nanometres. The decolourisation method is advantageous in that the use of 'foreign chemicals' is avoided. Furthermore there are no waste-disposal problems that are encountered with the use of carbon or Fuller's earth.