Patent · US Expired

Double benzimidazoles

US5478940A · kind A · utility

0Cited by

3References

2Claims

0Family size

Assignee

BASF SE

Inventors

Gunter-Rudolf Schroeder
Udo Mayer · Bischofswerda, DE
Karin H. Beck · Ludwigshafen, DE
Rainer Dyllick-Brenzinger · Speyer, DE

Key dates

Filing date	Nov 17, 1994
Grant date	Dec 26, 1995
Priority date	—
Expiry date	Nov 17, 2014

Classification

Technology area (CPC G)Physics
CPC primaryG03G9/09758
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.