Ink jet ink and process for making same

Details Ink jet ink and process for making same Ink jet ink and process for making same

1994-10-03

1996-07-23

Michl, Paul R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524394, 524557, 524503, 523160, 523161, 106 20D, C08K 5103, C08K 5098, C09D 1102

Patent

active

055390382

ABSTRACT:
Provided is an ink jet ink comprised of water, a pigment, a polymeric electrolyte, preferably a sodium, potassium or lithium salt of a polymeric carboxylic acid, a polyhydric alcohol and a stearate, preferably aluminum stearate. The presence of the stearate, particularly in combination with the polymeric electrolyte, provides one with an ink jet ink which upon printing makes a perfectly round dot located only on the surface of the paper. The image also dries very quickly, is of high density and is waterfast. Printing problems are also avoided, such as plugging.
The process for preparing the foregoing ink jet ink comprises comminuting a formulation containing the components followed by a separation step. The separation step is important to provide a stable dispersion of the ink formulation.

REFERENCES:
patent: 4623557 (1986-11-01), Yamori et al.
patent: 5017545 (1991-05-01), Kanda et al.

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