Electrocoagulation printing ink

Details Electrocoagulation printing ink Electrocoagulation printing ink

C - Chemistry, Metallurgy

09

D

C09D 11/02 (2006.01) B41C 1/10 (2006.01) C09D 7/02 (2006.01)

Patent

CA 2213927

The shelf-life of an electrocoagulation printing ink consisting essentially of a liquid colloidal dispersion containing an electrolytically coagulable colloid, a dispersing medium, a soluble electrolyte, a pigment and a dispersing agent uniformly dispersing said pigment into the dispersion, is increased by selecting as the dispersing agent an alkali metal salt of a naphthalenesulfonic acid-formaldehyde polycondensate having the general formula: Image in which R is an alkali metal and n is an integer ranging from about 5 to about 12.

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