Electrostatic toners containing phenacyl compounds

摘要

Electrostatic toners contain a polymeric binder and, as a charge stabilizer, a compound of the formula <IMAGE> where the ring A may be benzofused and Het(+) is the positively charged radical of a heterocycle, L is C-C8-alkylene, R is hydrogen, unsubstituted or substituted C1-C6-alkyl, unsubstituted or substituted phenyl, unsubstituted or substituted hydroxyl or unsubstituted or substituted amino and An(-) is one equivalent of an anion.