| abstract |
An electrostatic toner contains a polymeric binder and as a charge stabilizer a polyamine whose average molecular weight is from 150 to 15,000 and wherein the nitrogen atoms are separated from each other by C 1 -C 13 - alkylene, which may be phenyl-substituted, or by phenylene, which may be C 1 -C 4 -alkyl-substituted, and are substituted by C 1 -C 13 -alkyl, which may be phenyl-, hydroxyl- or carboxyl-substituted, phenyl, C 1 -C 10 -alkanoyl, benzoyl, C 1 - C 6 - alkylcarbamoyl, phenylcarbamoyl or a radical of the formula CO-L-CO, where L is C 2 -C 8 -alkylene, the last case resulting in the crosslinking of two polyamine units. |