METHOD AND APPARATUS FOR EFFECTING MUTUAL DISSOLUTION AND SEPARATION AT CONSTANT TEMPERATURE IN SOLVENT SET WHEREIN DISSOLVED STATE AND SEPARATED STATE CHANGE REVERSIBLY DEPENDING ON TEMPERATURE

摘要

In a combination of a first solvent and a second solvent composed of a plurality of solvents, wherein a mutually dissolved state and a separated state change reversibly depending on temperature, a method for effecting mutual dissolution or separation at a constant temperature (with no change of temperature); and a method for effecting the mutual dissolution or separation of the first solvent and the second solvent being separated, at a constant temperature, which comprises adding the first solvent and/or a solvent constituting the second solvent so as to provide a mixing ratio of the first and second solvents to result in the mutual dissolution or separation at a lower temperature, based on the data with respect to temperatures of the mutual dissolution and separation to mixing ratios of the first and second solvents and composition ratios of the second solvent.