Solubilization of water-insoluble dyes via microemulsions for bl

Details Solubilization of water-insoluble dyes via microemulsions for bl Solubilization of water-insoluble dyes via microemulsions for bl

1992-03-17

1993-07-13

Bell, Mark L.

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106 22E, 106 22F, 106 24R, 106 26R, 106 32, C09D 1114, C09D 1102

Patent

active

052269574

ABSTRACT:
Water-insoluble dyes are formulated in a microemulsion-based ink, which have true waterfastness, are non-threading, and are bleed-alleviated. The ink-jet inks have a formula comprising: (a) about 0.05 to 0.75 wt % of a high molecular weight colloid; (b) about 0.1 to 40 wt % of at least two surfactants, comprising at least one surfactant and at least one co-surfactant; (c) about 0.5 to 20 wt % of at least one co-solvent; (d) about 0.1 to 5 wt % of at least one water-insoluble dye; (e) about 0.1 to 20 wt % of an oil; and (f) the balance water. The inks of the invention form a stable microemulsion, which results in bleed alleviation, excellent line definition without threading, and excellent print quality.

REFERENCES:
patent: 3246997 (1966-04-01), Sumner et al.
patent: 4509982 (1985-04-01), Iijima
patent: 4692188 (1987-09-01), Ober et al.
patent: 4981517 (1991-01-01), DeSanto, Jr. et al.
patent: 5047084 (1991-09-01), Miller et al.
patent: 5133803 (1992-07-01), Moffatt

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