Waterfast dye and aqueous ink

Details Waterfast dye and aqueous ink Waterfast dye and aqueous ink

1992-01-17

1993-03-30

Group, Karl

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

534810, 534811, 534812, 534815, 534829, 534836, 534837, C09D 1102

Patent

active

051980223

ABSTRACT:
A alkali-soluble dye for a waterfast ink having structural formula as follows: ##STR1## and an ink containing the dye dissolved in water. Printing from the ink is insoluble below pH 6.0; is an intense black at low concentration; and remains black on acid papers. The aqueous inks are stable and exhibit good printhead nozzle maintenance.

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