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US 5,478,940 AGranted
Double benzimidazoles
AssigneeBASF SE
InventorsGunter-Rudolf Schroeder, Udo Mayer, Karin H. Beck, Rainer Dyllick-Brenzinger
Life of this patent
Estimating the term…
Abstract
Benzimidazoles of the formula ##STR1## where n and q are each 1 or 2, the radicals R are each hydrogen, chlorine or methyl, L is a bridge member and An.sup..crclbar. is one equivalent of an anion, are used as charge stabilizers in electrostatic toners.
Claims2
A benzimidazole of the formula I ##STR11## where n and q independently of one another are each 1 or 2,
- the radicals R independently of one another are each hydrogen, chlorine or methyl,
- L is a bridge member and
- An.sup..crclbar. is one equivalent of an anion.
Dependencies are inferred from the claim text.