| abstract |
PCT No. PCT/EP93/02130 Sec. 371 Date Feb. 17, 1995 Sec. 102(e) Date Feb. 17, 1995 PCT Filed Aug. 12, 1993 PCT Pub. No. WO94/04962 PCT Pub. Date Mar. 3, 1994.An electrostatic toner contains a polymeric binder and as charge stabilizer a 1:2 chromium, iron, cobalt or zirconium complex of azo dyes of the formula D-N=N-K, where D is derived from a diazo component D-NH2 selected from the group consisting of 2-amino-4-nitrophenol, 2-amino-5-nitrophenol, 2-amino-phenol-4-sulfonamide, anthranilic acid and picramic acid and K is derived from a coupling component K-H selected from the group consisting of beta -naphthol, acetoacetanilide and 1-phenyl-3-methylpyrazol-5-one. |