Abstract: The latex of an emulsion aggregation toner may be prepared without the use of a surfactant. Such a process comprises preparing an emulsion of monomers in water without a surfactant; adding a free radical initiator to at least a portion of the emulsion to initiate seed polymerization to form seed polymer, wherein the free radical initiator attaches to the seed polymer to form ionic, hydrophilic end groups on the seed polymer; and adding additional monomer to the composition to complete polymerization to form a latex polymer.

Abstract: Toners are described which include one or more copolymers combined with colorant particles or primary toner particles. Processes for preparing the toners are also disclosed.

Abstract: A process including: treating a mixture comprising an aqueous dispersion of toner particles and a first solution of a water soluble alkyl carboxylate metal salt with a second solution of a water soluble metal salt.

Abstract: A process including: treating a mixture comprising an aqueous dispersion of toner particles and a first solution of a water soluble alkyl carboxylate metal salt with a second solution of a water soluble metal salt.

Abstract: A layered particle for use in forming toner may be formed by forming a core region; polymerizing in the presence of the core region at least one monomer feed to form at least one intermediate layer on the core region; and polymerizing in the presence of the core region with at least one intermediate layer thereon a final monomer feed. In the process, each monomer feed is different from the previous monomer feed so as to form different polymer layers.

Abstract: A yellow toner including:a resin, anda colorant comprising a mixture of a yellow pigment and a yellow dye, wherein the combined weight of the colorant is from about 1 to about 50 weight percent of the total weight of the toner, and wherein the chroma of developed toner is from about 90 to about 130 CIELAB units.

Abstract: A process for the preparation of a latex comprising the polymerization of monomer in the presence of a chain transfer component, an initiator, a diphenyloxide disulfonate, and an optional nonionic surfactant.

Abstract: A process comprising (1) polymerizing an organic phase of monomer in the presence of a carboxylic acid, an oil soluble chain transfer agent, and a partially water soluble chain transfer agent; and which polymerizing is accomplished in the presence of (2) an aqueous phase containing a nonionic surfactant, and an anionic surfactant, and wherein there is added to the aqueous phase an aqueous initiator solution of an inorganic persulfate, and wherein the resulting latex contains particles of polymer with carboxylic acid; aggregating said latex particles with colorant; thereafter adding an effective amount of anionic surfactant and heating the mixture resulting about equal to, or about above the polymer Tg resulting from said monomer, or said monomers.

Abstract: A process for the preparation of ink compositions comprising the emulsion polymerization of monomer, water, surfactant, and initiator with stirring and heating to provide a latex; mixing therewith a pigment dispersion of pigment particles, water, and cationic surfactant; blending the mixture; thereafter stirring the mixture; and subsequently adding additional anionic surfactant to stabilize the aggregate particles.

Abstract: A process for the preparation of toner comprising(i) aggregating a colorant dispersion with an encapsulated wax;(ii) coalescing or fusing the aggregates generated; and optionally(iii) isolating, washing, and drying the toner.

Abstract: An ink for ink jet printing includes a liquid vehicle comprising water and toner particles with a colorant dispersed in or associated with the toner particles. The ink composition combines the print quality advantages of xerographic printing with the economic advantages of ink jet printing, thereby providing waterfast, archival quality prints.

Abstract: 1. A process for the preparation of a latex comprising a core polymer and a shell thereover and wherein said core polymer is generated by (A)(i) emulsification and heating of the polymerization reagents of monomer, chain transfer agent, water, surfactant, and initiator;(ii) generating a seed latex by the aqueous emulsion polymerization of a mixture comprised of part of the (i) monomer emulsion, from about 0.5 to about 50 percent by weight, and a free radical initiator, and which polymerization is accomplished by heating, and, wherein the reaction of the free radical initiator and monomer produces a seed latex containing a polymer;(iii) heating and adding to the formed seed particles of (ii) the remaining monomer emulsion of (I), from about 50 to about 99.

Abstract: A process for the preparation of toner comprising blending an aqueous colorant dispersion and a latex resin emulsion, and which latex resin is generated from a dimeric acrylic acid, an oligomer acrylic acid, or mixtures thereof and a monomer; heating the resulting mixture at a temperature about equal, or below about the glass transition temperature (Tg) of the latex resin to form aggregates; heating the resulting aggregates at a temperature about equal to, or above about the Tg of the latex resin to effect coalescence and fusing of the aggregates; and optionally isolating the toner product, washing, and drying.

Abstract: A process for the preparation of a latex comprising the polymerization of monomer in the presence of a chain transfer component, an initiator, a diphenyloxide disulfonate, and an optional nonionic surfactant.

Abstract: A process for the preparation of polymer latex particles by conducting a pre-reaction emulsification with monomer, polar comonomer, water, surfactant, chain transfer agent, and initiator; and which pre-reaction emulsification is effected at a low temperature of from about 3.degree. C. to about 35.degree. C., for example, and thereafter, effecting emulsion polymerization by heating the aforementioned emulsified mixture in a reactor at a temperature of from about 25.degree. C. to about 125.degree. C. The aforementioned reactor contents are retained at this temperature, that is 25.degree. C. to 125.degree. C. for an effective time period. Thereafter, the reaction mixture is cooled.

Abstract: A process for the preparation of toner which involvesi) flushing a colorant into a sulfonated polyester resin;ii) mixing an organic soluble dye with the colorant polyester resin of i);iii) dispersing the resulting mixture into warm water thereby enabling the formation of submicron particles;iv) allowing the resulting solution to cool below about, or about equal to the glass transition temperature of said sulfonated polyester resin;v) adding an alkali halide solution and heating; and optionallyvi) recovering said toner, followed by washing and drying.

Abstract: A toner comprised of pigment, and an addition polymer resin generated from about 55 to about 80 weight percent of styrene, from about 1 to about 25 weight percent of acrylate, from about 1 to about 20 weight percent of acrylonitrile, and from about 0.5 to about 5 weight percent of acrylic acid.

Abstract: A process for the preparation of toner comprising(i) blending (a) an aqueous pigment dispersion containing a first ionic surfactant and an optional charge control agent with (b) a latex blend comprised of linear polymer and crosslinked polymer particles, optional nonionic surfactant and a second ionic surfactant with a charge polarity opposite to that of said first ionic surfactant in said pigment dispersion;(ii) heating the resulting mixture at about below the glass transition temperature (Tg) of the linear latex polymer to form toner sized aggregates; and(iii) subsequently heating said aggregate suspension about above the Tg of the linear latex polymer to effect fusion or coalescence of said aggregates.

Abstract: A process for the preparation of toner comprising(i) blending (a) a colorant dispersion containing a first ionic surfactant and an optional charge control agent with (b) a latex blend comprised of linear polymer and crosslinked polymer particles, optional nonionic surfactant and a second ionic surfactant with a charge polarity opposite to that of said first ionic surfactant in said colorant dispersion;(ii) heating the resulting mixture at about below the glass transition temperature (Tg) of the linear latex polymer to form toner sized aggregates; and(iii) subsequently heating said aggregate suspension about above the Tg of the linear latex polymer to effect fusion or coalescence of said aggregates, and wherein said linear polymer is of an M.sub.w of from about 20,000 to about 40,000.

Abstract: A process for the preparation of polymer compositions which comprises mixing a conductive component with an anionic polymeric latex containing a polymer; adding a cationic surfactant, or flocculant whereby the aggregation of the latex particles and the conductive component particles results; subsequently adding colloidal stabilizer, followed by the addition of a base to obtain a pH of from about 7 to about 12; heating above about the polymer glass transition temperature thereby enabling the severage, or breakage of the formed aggregated particles; further heating above about the polymer glass transition temperature enabling the coalescence of the polymer and conductive component particles; and optionally washing and drying the resulting coalesced product.