Abstract: A liquid electrophotographic ink composition is disclosed herein. One example of the liquid electrophotographic ink composition includes a resin, a liquid carrier, a pigment chosen from titanium oxide, and a spacer chosen from barium sulfate, calcium carbonate, clay, magnesium silicate and mixtures thereof, in an amount from 5 to 15 wt. % of the total solids of the composition. A method for making a liquid electrophotographic ink composition is also disclosed herein.

Abstract: An electrostatic ink composition comprising a carrier liquid; a first resin comprising a copolymer of an alkylene monomer and a methacrylic acid monomer; and a second resin comprising a copolymer of an alkylene monomer and an acrylic acid monomer, wherein the second resin constitutes at least 35 wt. % of the total amount of resin is disclosed.

Abstract: Here is described a liquid electrostatic ink composition comprising a pigment; a carrier liquid; a resin; a charge director; a fatty acid amide, and a polyalkylene wax. Methods of forming the liquid electrostatic ink compositions, and plastic substrates with the liquid electrostatic ink composition printed thereon, are also disclosed.

Abstract: Described herein is a liquid electrophotographic ink composition comprising: a thermoplastic resin comprising a polymer having acidic side groups; a charge adjuvant comprising a complex of a metal(II) cation and two monovalent anions; or a complex of a metal(III) cation and three monovalent anions; or a complex of a metal(III) cation, a monovalent anion and a divalent anion, wherein each monovalent anion is independently selected from carboxylate anions having from 2 to 16 carbon atoms and alkoxide anions having from 1 to 16 carbon atoms; and wherein the divalent anion is selected form the oxo group, dicarboxylate anions having from 2 to 16 carbon atoms, and dialkoxide anions having from 1 to 16 carbon atoms; and a liquid carrier. Also described herein is a method of producing the liquid electrophotographic ink composition and a printed substrate.

Abstract: Disclosed herein is a liquid electrophotographic ink composition comprising a resin comprising a copolymer of an alkylene monomer and a monomer selected from acrylic acid and methacrylic acid; a liquid carrier; and an anti-caking agent present in an amount of up to 1 wt. % of the total solids of the composition. Also disclosed is a method of printing the liquid electrophotographic ink composition and a printed substrate.

Abstract: A liquid electrophotographic ink composition is disclosed herein. One example of the liquid electrophotographic ink composition includes a resin, a liquid carrier, a pigment chosen from titanium oxide, and a spacer chosen from barium sulfate, calcium carbonate, clay, magnesium silicate and mixtures thereof, in an amount from 5 to 15 wt. % of the total solids of the composition. A method for making a liquid electrophotographic ink composition is also disclosed herein.

Abstract: Described herein is an electrophotographic ink composition comprising: a first resin comprising a copolymer of an alkylene monomer and a monomer selected from acrylic acid and methacrylic acid; and a second resin comprising a condensation product of polyvinyl alcohol with an aldehyde. Also described herein is a method of producing the electrophotographic ink composition and a printed substrate produced by printing the electrophotographic ink composition.

Abstract: The present disclosure discloses a liquid electrophotographic ink. The ink can include (A) a liquid vehicle; (B) at least one colorant; (C) a resin comprising an ethylene acid copolymer; (D) an ethylene/(meth)acrylic acid C1-10 alkyl ester copolymer selected from the group consisting of an ethylene/methyl acrylate copolymer and an ethylene/butyl acrylate copolymer; and (E) a condensation product of urea and aldehyde.

Abstract: An electrostatic ink composition comprising a carrier liquid; a first resin comprising a copolymer of an alkylene monomer and a methacrylic acid monomer; and a second resin comprising a copolymer of an alkylene monomer and an acrylic acid monomer, wherein the second resin constitutes at least 35 wt. % of the total amount of resin is disclosed.

Abstract: Described herein is an electrostatic ink composition comprising a thermoplastic resin comprising a copolymer of an alkylene monomer and an ethylenically unsaturated monomer comprising an epoxide. Also descried herein is a method of printing comprising electrostatically printing an electrostatic ink composition on a surface of a substrate, the electrostatic ink composition comprising a thermoplastic resin comprising a copolymer of an alkylene monomer and an ethylenically unsaturated monomer comprising an epoxide; and reacting the epoxide with the surface of the substrate.

Abstract: This disclosure relates to an electrophotographic composition including a thermoplastic polymer, a charge adjuvant, a liquid carrier, and at least one microcapsule including at least one additive encapsulated within a shell, wherein the shell of the microcapsule includes a material having a melting temperature of at least 50 degrees C.

Abstract: The present disclosure discloses a liquid electrophotographic ink. The ink can include (A) a liquid vehicle; (B) at least one colorant; (C) a resin comprising an ethylene acid copolymer; (D) an ethylene/(meth)acrylic acid C1-10 alkyl ester copolymer selected from the group consisting of an ethylene/methyl acrylate copolymer and an ethylene/butyl acrylate copolymer; and (E) a condensation product of urea and aldehyde.

Abstract: Described herein is a liquid electrostatic ink composition. The composition may comprise: a. a carrier liquid; and b. chargeable particles suspended in the carrier liquid, wherein the chargeable particles comprise a thermoplastic resin formed from the reaction of a first resin and a second resin, wherein i. the first resin comprises a polymer having acidic side groups; and ii. the second resin comprises an epoxy resin component and an elastomeric component, wherein the epoxy resin component has one or more epoxide groups per molecule.

Abstract: Described herein is a liquid electrostatic ink composition. The composition may comprise: a. a carrier liquid; and b. chargeable particles suspended in the carrier liquid, wherein the chargeable particles comprise a thermoplastic resin formed from the reaction of a first resin and a second resin, wherein i. the first resin comprises a polymer having acidic side groups; and ii. the second resin comprises an epoxy resin component and an elastomeric component, wherein the epoxy resin component has one or more epoxide groups per molecule.

Abstract: Herein is described a method for the manufacture of a charge director comprising a barium salt. The method comprises reacting barium alkoxide with an acid in a reaction medium comprising ethanol, and separating ethanol from the reaction mixture to recover the barium salt produced.

Abstract: Herein is described a method for the manufacture of a charge director comprising a barium salt. The method comprises reacting barium alkoxide with an acid in a reaction medium comprising ethanol, and separating ethanol from the reaction mixture to recover the barium salt produced.

Abstract: A method of producing an electrostatic ink composition, the method comprising: providing a precursor ink composition comprising a resin and a pigment dispersed in a liquid carrier; wherein the precursor ink composition comprises 30 wt % or more non-volatile solids; and spraying a lubricating liquid onto the surface of the precursor ink composition to form the electrostatic ink composition.

Abstract: A method of producing an electrostatic ink composition, the method comprising: providing a precursor ink composition comprising a resin and a pigment dispersed in a liquid carrier; wherein the precursor ink composition comprises 30 wt % or more non-volatile solids; and spraying a lubricating liquid onto the surface of the precursor ink composition to form the electrostatic ink composition.

Abstract: The present invention relates to an improved process of alkylating secondary amines, more particularly of alkylating compounds having amino piperidinic group, which are useful as donepezil intermediates, wherein an alcohol serves as reaction facilitator thus enabling to obtain donepezil and salts thereof in high quality and yield. The present invention also relates to the prevention of unwanted alkylation of donepezil precursors, having amino piperidinic group, by using suitable reaction conditions.