Method of decontaminating a photographic bath with heat-reversible polymers

摘要

The invention concerns a method for decontaminating a used photographic processing bath. This method consists of putting the processing bath in contact with a heat-reversible hydrophilic polymer which becomes hydrophobic above a temperature lower than the temperature of the processing bath. The tars and other organic contaminants present in the used photographic processing bath can be removed by cooling the heat-reversible polymer below the temperature where it becomes hydrophilic.