Process for preparing an ink composition

Details Process for preparing an ink composition Process for preparing an ink composition

1996-07-01

1998-02-24

Klemanski, Helene

Compositions: coating or plastic

Coating or plastic compositions

Marking

106 3185, 106 3187, C09D 1102

Patent

active

057208026

ABSTRACT:
Processes are disclosed for fabricating an ink composition which uses a high pressure shearing force to produce a desired reduction and dispersion of pigment particles in a concentrated dispersion. In one disclosed process, an aqueous ink mixture including water, a solvent and a black pigment colorant dispersion is processed by a microfluidizer and filtered to obtain a desired particle size making the ink suitable for ink jet printing applications. In another process, the pigment dispersion is first microfluidized and the water and solvent added to form a mixture which is then filtered. These processes simplify the ink fabrication by eliminating a sonification and centrifugation step required by prior art processes.

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patent: 5529616 (1996-06-01), Prasad

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