Waterfast aqueous inks

Details Waterfast aqueous inks Waterfast aqueous inks

1991-08-19

1993-06-29

Dixon, Jr., William R.

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106 20R, 523160, 524190, 524612, C09D 1102

Patent

active

052230287

ABSTRACT:
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.

REFERENCES:
patent: 4155768 (1979-05-01), Adams et al.
patent: 4197135 (1980-04-01), Bailey et al.
patent: 4659382 (1987-04-01), Kang
patent: 4789400 (1988-12-01), Solodar et al.
patent: 4963186 (1990-11-01), Hindagolla
patent: 4963189 (1990-10-01), Hindagolla
patent: 5017644 (1991-05-01), Fuller et al.
patent: 5062893 (1991-11-01), Adamic et al.
European Patent Application 348,050, published Dec. 27, 1989.

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