Aqueous ink jet inks containing cycloaliphatic diol pluggage inh

Details Aqueous ink jet inks containing cycloaliphatic diol pluggage inh Aqueous ink jet inks containing cycloaliphatic diol pluggage inh

1991-06-13

1992-12-08

Dixon, Jr., William R.

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106 20D, 106 23R, 106401, 106499, 526190, C09D 1100

Patent

active

051694387

ABSTRACT:
An ink for ink jet printers which comprises an aqueous carrier medium, pigment dispersion or dye and a cosolvent which retards or inhibits pluggage failure. The latter is an cycloaliphatic diol having a total of at least 6 carbon atoms and having a solubility in water of at least 4.5 parts in 100 parts of water at 25.degree. C.
The pigment dispersion consists of pigment particles and a dispersant, preferably a polymeric dispersant, having a hydrophilic segment and a segment that links to the pigment. These inks exhibit long decap times, are storage stable, have reliable performance and give images having good print quality.

REFERENCES:
patent: 4119398 (1978-10-01), Purser
patent: 4508880 (1985-04-01), Webster
patent: 4597794 (1986-07-01), Ohta et al.
patent: 4657590 (1987-04-01), Gamblin

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