Xerox Corporation

National Research Council of Canada

Nrc of Canada

Michael Steven Hawkins

Richard P N Veregin

Guerino G Sacripante

Edward Graham Zwartz

Valerie M Farrugia

Ke Zhou

Hadi K Mahabadi

Karen Ann Moffat

Enno Eric Agur

Daryl Walter Vanbesien

Paul Joseph Gerroir

Gerald R Allison

Vladislav Skorokhod

Cuong Vong

Sheau V Kao

Stephan V Drappel

Kimberly D Nosella

Jordan H Wosnick

Thomas Edward Enright

Thomas R Hoffend

Bernard Grushkin

Suxia Yang

Corey L Tracy

Shigang S Qiu

Santiago Faucher

Allan K Chen

Joo T Chung

Angelo J Barbetta

Maria N McDougall

Eric M Strohm

T Brian McAneney

Robert D Bayley

Yulin Wang

George Liebermann

Hui Chang

William H Hollenbaugh, Jr

Shivanthi Easwari Sriskandha

Wafa Faisul Bashir

Andriy Kovalenko

Sergey Gusarov

Qingbin Li

Kentaro Morimitsu

Maria N V McDougall

Marko D Saban

Tie Hwee Ng

Man-Chung Tam

Michael F Cunningham

Deepak R Maniar

Carol A Fox

Eric Rotberg

J Stephen Kittelberger

Christine Deborah Anderson

Nicoleta D Mihai

Vincenzo G Marcello

Majid Kasmaei Kamel

Nancy S Hunt

Daniel M McNeil

Nan-Xing Hu

Naveen Chopra

Peter Gordon Odell

Peter Michael Kazmaier

Raj D Patel

Rina Carlini

Sandra J Gardner

Carolyn Patricia Moorlag

Paul Farrell Smith

Raymond W Wong

Biby Esther Abraham

Richard P Veregin

Caroline Melanie Turek

Frank Ping-Hay Lee

Che C Chow

Aurelian Valeriu Magdalinis

Fumii Higuchi

San-Ming Yang

Joseph L Leonardo

Carol A Jennings

Bernard A Kelly

Louis V Isganitis

Rosa M Duque

John G VanDusen

Robert M Jacobs

Suresh K Ahuja

Darren Andrew Makeiff

Michael J D'Amato

Thomas C Dombroski

Abdisamed Sheik-Qasim

John Abate

David John William Lawton

Cristina Resetco

Brian J Andaya

David J W Lawton

Milan Maric

Ahmed Alzamly

Mary L McStravick

Rashid Mahmood

John G Van Dusen

Alan E Toth

Alan E J Toth

Nam S Ro

A method for producing metal or metal alloy particles may include: mixing a mixture comprising: (a) a metal or a metal alloy, (b) a carrier fluid, and optionally (c) an emulsion stabilizer at a temperature at or greater than a melting point of the metal or the metal alloy to create a dispersion of molten droplets of the metal or the metal alloy dispersed in the carrier fluid; cooling the mixture to below the melting point of the metal or the metal alloy to form metal or metal alloy particles; and separating the metal or metal alloy particles from the carrier fluid, wherein the metal or metal alloy particles comprise the metal or the metal alloy and the emulsion stabilizer, if included.

Metal and fusible metal alloy particles and related methods

A method of making thermoplastic polymer particles may include mixing in an extruder a mixture comprising a thermoplastic polymer and a carrier fluid that is immiscible with the thermoplastic polymer at a temperature greater than a melting point or softening temperature of the thermoplastic polymer and at a shear rate sufficiently high to disperse the thermoplastic polymer in the carrier fluid; cooling the mixture to below the melting point or softening temperature of the thermoplastic polymer to form solidified particles comprising thermoplastic polymer particles having a circularity of 0.90 or greater and that comprise the thermoplastic polymer; and separating the solidified particles from the carrier fluid.

Melt emulsion extrusion methods for producing thermoplastic polymer particles

Melt emulsification may be employed to form elastomeric particulates in a narrow size range when nanoparticles are included as an emulsion stabilizer. Such processes may comprise combining a polyurethane polymer and nanoparticles with a carrier fluid at a heating temperature at or above a melting point or a softening temperature of the polyurethane polymer, applying sufficient shear to disperse the polyurethane polymer as liquefied droplets in the presence of the nanoparticles in the carrier fluid at the heating temperature, cooling the carrier fluid at least until elastomeric particulates in a solidified state form, and separating the elastomeric particulates from the carrier fluid. In the elastomeric particulates, the polyurethane polymer defines a core and an outer surface of the elastomeric particulates and the nanoparticles are associated with the outer surface. The elastomeric particulates may have a D50 of about 1 μm to about 1,000 μm.

Nanoparticle-coated elastomeric particulates and methods for production and use thereof

A process including providing a three-dimensional printing powder dispersion comprising a three-dimensional printing powder, an optional dispersing agent, and water; providing an emulsion of an organic polymeric additive; combining the three-dimensional printing powder dispersion and the emulsion of organic polymeric additive to form a mixture comprising the three-dimensional printing powder dispersion and the emulsion of organic polymeric additive; and drying the mixture of the three-dimensional printing powder dispersion and the emulsion of organic polymeric additive.

Process for preparing a three-dimensional printing composition

A toner process including a) mixing reagents comprising at least one amorphous resin, an optional crystalline resin, an optional styrene, acrylate or styrene/acrylate, an optional wax, and an optional colorant to form an emulsion comprising a resin particle; b) adding at least one aggregating agent and aggregating said resin particle to form a nascent toner particle; c) optionally, adding one or more resins to form a shell on said nascent toner particle to yield a core-shell particle; d) adding a first chelating agent and a second chelating agent; wherein said first chelating agent and said second chelating agent are different; e) freezing particle growth to form an aggregated toner particle; f) coalescing said aggregated toner particle to form a toner particle; and g) optionally, collecting said toner particle.

Toner process employing dual chelating agents

A composition including a three-dimensional polymeric printing powder; an organic polymeric additive on at least a portion of an external surface of the three-dimensional polymeric printing powder; wherein the organic polymeric additive is optionally cross-linked; and optionally, an inorganic additive on at least a portion of an external surface of the three-dimensional polymeric printing powder. A process for preparing a three-dimensional polymeric printing powder having an organic polymeric additive disposed thereon. A process for employing the three-dimensional polymeric printing powder including selective laser sintering.

Surface additive for three-dimensional polymeric printing powders

A process for producing unsaturated polyester microparticles comprising: melt-mixing an unsaturated polyester and an oil in an extruder; washing the microparticles with an organic solvent to reduce the amount of oil; and removing the organic solvent to form the microparticles.

Curable unsaturated crystalline polyester powder and methods of making the same

A toner composition including an amorphous polyester resin; a crystalline polyester resin; a styrene acrylate copolymer; an optional wax; and an optional colorant; wherein the amorphous polyester resin comprises a rosin monomer content of from about 10 to about 25 percent rosin monomer based upon the total amount of monomer comprising the amorphous polyester resin. A toner composition including a core and at least one shell disposed thereover. A toner process including contacting an amorphous polyester resin; a crystalline polyester resin; a styrene acrylate copolymer; an optional wax; an optional colorant; and an optional aggregating agent; wherein the amorphous polyester resin comprises a rosin monomer content of from about 10 to about 25 percent rosin monomer heating to form aggregated toner particles; optionally, adding a shell resin to the aggregated toner particles, heating to coalesce the particles; and recovering the toner particles.

Non-bisphenol-A emulsion aggregation toner and process

The instant disclosure describes methacrylate coated carrier resins with hydrophobic substituents for charge control and improved RH sensitivity.

Negative charge carrier resins with RH sensitivity

Disclosed are toner compositions that include an amorphous polyester resin, a crystalline polyester resin, a colorant and a wax, and where the amorphous polyester resin contains in excess of zero weight percent of dodecylsuccinic anhydride to less than 16 weight percent of dodecylsuccinic anhydride, or where the amorphous polyester resin contains in excess of zero weight percent of dodecylsuccinic acid to less than 16 weight percent of dodecylsuccinic acid.

Toner compositions and processes

A hybrid toner includes a core having at least one amorphous polyester resin and at least one crystalline polyester resin, and at least one styrene/acrylate resin, a shell comprising at least one styrene/acrylate resin, at least one wax, and optionally a pigment dispersion, the first modulated differential calorimetry scan of the hybrid toner shows at least two melting point peaks below about 80&#xb0; C., and the difference between the two melting point peaks is less than or equal to about 15&#xb0; C.

Toner compositions comprising crystalline polyester and wax

Disclosed are toner compositions that contain an amorphous polyester resin, a crystalline polyester resin, a colorant and a wax, and where the crystalline polyester resin is subjected to nucleation with a rosin acid or the salt of a rosin acid.

Disclosed herein include styrene-acrylic-based binder compositions containing an antiplasticizer with particles having a core-shell type structure and methods for their preparation.

Toner compositions with antiplasticizers

The present disclosure provides for enzymatic polymerization to produce polyester resins suitable for use in manufacturing toners. In embodiments, crystalline copolymers, which are polyesters, may be synthesized from lactones, cyclic anhydrides, cyclic carbonates, and combinations thereof. These crystalline copolymers, in turn, may be utilized in the synthesis of toner particles.

Toner compositions

A composition for use in 3D printing includes a polyester resin including a 1,4-butanediol (BDO) monomer unit and a terephthalate monomer unit, the polyester resin being provided in a powdered form with a particle size in a range from about 100 microns to about 500 microns.

Compositions comprising polyester for 3D printing

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Cambridge, Canada

Michael Steven Hawkins