Electrostatic toner containing a metal complex colorant as...

Details Electrostatic toner containing a metal complex colorant as... Electrostatic toner containing a metal complex colorant as...

G - Physics

03

G

G03G 9/09 (2006.01) C09B 45/14 (2006.01) G03G 9/097 (2006.01)

Patent

CA 2140279

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.

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