Xerox Corporation

Alan E Toth

Guerino G Sacripante

Marko D Saban

J Stephen Kittelberger

Robert D Bayley

Daniel A Foucher

Walter Mychajlowskij

Dongming Li

John F Yanus

Edward Graham Zwartz

Damodar M Pai

Ah-Mee Hor

Ke Zhou

Michael Steven Hawkins

Dale S Renfer

Zoran D Popovic

George Liebermann

Paul J DeFeo

Michael L Grande

John Abate

Rashid Mahmood

Mark R Elliott

Veronique Laberge

The disclosure describes a one reaction process for making a bio-based polyester resin. The resultant polyester resin retains thermal properties as compared to a similar resin but made using previous multi-step processes conducted in separate vessels.

Simplified process for sustainable toner resin

A process for the preparation of an unsaturated polyester which comprises (i) reacting an organic diol with a cyclic akylene carbonate in the presence of a first catalyst to thereby form a polyalkoxy diol, and (ii) optionally adding thereto a further amount of cyclic alkylene carbonate in the presence of a second catalyst, and (iii) subsequently polycondensing the resulting mixture with a dicarboxylic acid.

Polyester process

A toner composition comprised of a polyester resin with hydrophobic end groups, colorant, optional wax, optional charge additive, and optional surface additives.

Toner and developer compositions

A process for the preparation of aryl amine polycondensation polymers comprising the interfacial polymerization of an aryl amine diol dissolved in an alkaline aqueous phase, to which has been added a water miscible organic solvent, with a bifunctional acid halide dissolved in a water immiscible organic solvent, and wherein said polymers possess a high molecular weight of from between about 50,000 to about 350,000, and narrow molecular weight distribution M.sub.w /M.sub.n of from about 1 to about 4.

Electrophotographic elements with arylamine polycondensation polymers

An electrophotographic imaging member including a charge generating layer, a charge transport layer with charge transport molecules and as sensitizing additive or dopant a hydroxy derivative of the transport molecule.

Imaging members having a hydroxy aryl amine charge transport layer

A process is described for preparing vanadyl phthalocyanine for electrophotographic devices comprising reacting vanadium pentoxide and phthalonitile to form vanadyl phthalocyanine pigment and other reaction products, separating crude vanadyl phthalocyanine pigment from the other reaction products, washing the crude vanadyl phthalocyanine pigment, drying the crude vanadyl phthalocyanine pigment, mixing the crude vanadyl phthalocyanine pigment with a solution of between about 60 percent and about 80 percent by weight of H.sub.2 SO.sub.4 to form a H.sub.2 SO.sub.4 -vanadyl phthalocyanine pigment mixture, diluting the H.sub.2 SO.sub.4 -vanadyl phthalocyanine pigment mixture with deionized water to form a diluted mixture, separating the vanadyl phthalocyanine pigment, washing the isolated vanadyl phthalocyanine pigment particles, drying the vanadyl phthalocyanine particles to form the dried, partially purified vanadyl phthalocyanine pigment, dissolving the dried, partially purified vanadyl phthalocyanine pigment in concentrated H.sub.2 SO.sub.4 to form a solution of vanadyl phthalocyanine in concentrated H.sub.2 SO.sub.4, adding the solution of vanadyl phthalocyanine in concentrated H.sub.2 SO.sub.4 to water to precipitate the vanadyl phthalocyanine as vanadyl phthalocyanine pigment particles, separating the precipitated vanadyl phthalocyanine pigment particles from the H.sub.2 SO.sub.4 and water, washing the isolated vanadyl phthalocyanine pigment particles, and drying the vanadyl phthalocyanine pigment particles to form purified vanadyl phthalocyanine pigment.

Phthalocyanine treatment process

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Burlington, Canada

Alan E Toth