Xerox Corporation

Karina Lopez

Santiago Faucher

Biby Esther Abraham

Enno Eric Agur

Kimberly D Nosella

Shigang S Qiu

Yulin Wang

Marko D Saban

Frank Ping-Hay Lee

Aurelian Valeriu Magdalinis

David R Kurceba

Rosa M Duque

Daniel Lafontaine

Jonathan Lisk

The present disclosure provides processes for making inorganic or organic colorant dispersions using an acoustic mixer, where such dispersion may be used to make toner. Such processes apply low frequency, high intensity acoustic energy and a consistent shear field throughout an entire mixing vessel and provide uniform dispersion of colorants within minutes.

Preparing colorant dispersions using acoustic mixing

A process for preparing a pigment dispersion including melting a phase change ink carrier and an optional dispersant at a temperature of from about 100&#xb0; C. to about 170&#xb0; C. in a jacketed vessel comprising a jacket surrounding an immersion mill or basket mill attachment and a dispersion blade attachment disposed within the jacketed vessel; mixing the melted phase change ink carrier and optional dispersant with a dispersion blade in the jacketed vessel; adding a pigment to the melted, mixed phase change ink carrier and optional dispersant in the jacketed vessel; wetting the pigment; after pigment wetting, reducing the pigment particle size using an immersion mill or basket mill attachment in the jacketed vessel; and discharging the pigment dispersion.

Phase change ink pigment dispersion process

A dry flushed pigment comprises a dry pigment and a flushing agent. Particles of the dry pigment are dispersed into the flushing agent. The dry flushed pigment may have at least 20 percent by weight dry pigment. The dry flushed pigment may have a range of 20 to 80 percent dry pigment by weight. A pigment concentrate comprising a dry flushed pigment and one or more of a group of an ink carrier, a dispersant, or a synergist, where the dry flushed pigment is mixed with one or more of the ink carrier, dispersant or synergist and then milled to create the pigment concentrate. The pigment in the pigment concentrate has a Z-average particle size in the range of 75 nm to 250 nm. The pigment in the pigment concentrates is present in the amount from about 15 to 60 percent by weight of the pigment concentrate.

Low cost process for solid ink using dry flushed pigments

A process for forming arylamines by continuous Buchwald-Hartwig reaction using, in part, a plug flow reactor with a fluid flow path greater than about 1 mm in diameter and a single solvent under pressure to form a product with a space time yield of at least 100 g/L/hr.

Continuous production of arylamine

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Richmond Hill, Canada

Karina Lopez