WATERFAST AQUEOUS INKS

A waterfast ink having 3.0% Food Black 2, 2.5% highly hydroxyethylated polyethyleneimine, 10.0% ammonium benzoate, and the balance water. The invention appears to function upon loss of water after printing by a polar neutralizing between the dye and the polyimine, which results in an affinity of the...

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Main Authors MRVOS, JAMES M, STONE, JERRY F, PIEKUNKA, ANN M, AULICK, RODNEY O, FRANEY, TERENCE E, BEACH, BRADLEY, L
Format Patent
LanguageEnglish
French
Published 09.07.2002
Edition5
Subjects
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Summary:A waterfast ink having 3.0% Food Black 2, 2.5% highly hydroxyethylated polyethyleneimine, 10.0% ammonium benzoate, and the balance water. The invention appears to function upon loss of water after printing by a polar neutralizing between the dye and the polyimine, which results in an affinity of the dye to paper. It is applicable to any dye having anionic solubilizing groups but not having quaternary ammonium and to any ammonium salt.
Bibliography:Application Number: CA19922076074