Patent ID: 8075803

Claim:
A process for preparing ionic liquids, ionic solids or mixtures thereof and having the general formula [Q + ] n [Z n− ] from cationic synthesis modules including said [Q + ] and having the general formula [Q + ] n [Y n− ] and anionic synthesis modules comprising said [Z n− ] as their anion, where said [Q + ] of said cationic synthesis module is a quaternary ammonium [R 1 R 2 R 3 R 4 N + ], phosphonium [R 1 R 2 R 3 R 4 P + ] or sulfonium [R 1 R 2 R 3 S + ] cation or an analogous quaternized nitrogen, phosphorus or sulfur heteroaromatic, where the radicals R 1 , R 2 , R 3 , R 4 are all identical, partly identical or different, the radicals R 1 , R 2 , R 3 and R 4 are linear, cyclic, branched, saturated or unsaturated alkyl radicals, monocyclic or polycyclic aromatic or heteroaromatic radicals or derivatives of these radicals which are substituted by further functional groups and R 1 , R 2 , R 3 , R 4 may also be joined to one another (polyvalent radical), and wherein said [Y n− ] of said cationic synthesis module is a hydrogencarbonate [HCO 3 ], carbonate [CO 3 2− ], monoalkylcarbonate or monoarylcarbonate [ROCO 2− ], and where R is a linear, cyclic, branched, saturated or unsaturated alkyl radical, monocyclic or polycyclic aromatic or heteroaromatic or [ROCO 2− ] is another monosubstituted carbonate, and wherein said anionic synthesis module is reacted with said cationic synthesis module [Q + ] n [Y n− ] to remove the anion [Y n− ] of the cationic synthesis module and replace it by said anion [Z n− ] of said ionic liquids, ionic solids or mixtures.