BISCATIONIC ACID AMIDE AND ACID IMIDE DERIVATIVES AND PROCESS FOR PREPARING THEM

摘要

The invention relates to biscationic acid amide and acid imide derivatives with an anion of formula (I), where R9 to R12 are aliphatic, iso- or heterocyclic aromatic residues or aralkyl residues, which may be substituted by alkyl(C1-C4) residues, alkoxy(C1-C4) residues, aryl residues or halogen atoms, or are fluorine atoms, and mixtures of these compounds and mixed crystals with mixed anions and/or cations. The invention also relates to a process for preparing them. The new compounds are excellent colourless charge controllers in toners and developers for electrophotographic recording and as charge-enhancers in powders and paints for surface coating, in particular in triboelectrically or electrokinetically sprayed powder paints.