# US 10,478,795 B2 · Self-dispersing capsules > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,478,795 B2 - Document ID: US10478795B2 - Status: Granted - Kind: B2 - Application number: 15/566,347 - Filed: 2016-04-01 - Published: 2018-03-29 - Granted: 2019-11-19 - Earliest claimed: 2015-04-15 - Assignees: Agfa NV - Applicants: Agfa NV - Inventors: Johan Loccufier - Web page: https://patentgrep.com/patent/US10478795B2 ## CPC - B01J 13/16: Interfacial polymerisation - C08G 18/02: of isocyanates or isothiocyanates only - C09D 11/10: based on artificial resins - C09D 11/101: Inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with UV-curing following the printing - C09D 11/322: Pigment inks - C09D 11/40: Ink-sets specially adapted for multi-colour inkjet printing - B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS - C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS - C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D) ## Abstract A method for manufacturing capsules for an in inkjet ink includes the steps of a) preparing a non-aqueous solution of a first shell component for forming a polymeric shell and one or more chemical reactants optionally in an organic solvent having a low miscibility with water and having a lower boiling point than water; b) preparing an aqueous solution of a second shell component for forming the polymeric shell and an amphoteric surfactant; c) dispersing the non-aqueous solution under high shear in the aqueous solution; d) optionally stripping the organic solvent from the mixture of the aqueous solution and the non-aqueous solution; and e) preparing a polymeric shell around the one or more chemical reactants by interfacial polymerization of the first and second shell components for forming the polymeric shell. ## Claims ### Claim 1 A method for manufacturing capsules for an inkjet ink, the method comprising the steps of: a) preparing a non-aqueous solution of a first shell component of a polymeric shell and one or more chemical reactants, optionally in an organic solvent having a low miscibility with water and having a lower boiling point than water; b) preparing an aqueous solution of a second shell component of the polymeric shell and an amphoteric surfactant; c) dispersing the non-aqueous solution under shear in the aqueous solution; d) optionally stripping the organic solvent from a mixture of the aqueous solution and the non-aqueous solution; and e) preparing the polymeric shell around the one or more chemical reactants by interfacial polymerization of the first shell component and the second shell component of the polymeric shell; wherein the amphoteric surfactant consists of 85% to 100% of a surfactant according to Formula (I): R represents an optionally substituted aliphatic chain including 8 to 22 carbon atoms, wherein optionally substituted means substituted by a hydroxyl group, a halogen, an ether group including 1 to 6 carbon atoms, an amide group including 1 to 6 carbon atoms, an alkyl group including 1 to 6 carbon atoms, and an aryl group including 1 to 8 carbon atoms; L represents a divalent linking group including 1 to 6 carbon atoms; and M+represents a proton or a counterion to compensate for a negative charge of the carboxylate group. ### Claim 2 (depends on 1) The method according to claim 1, wherein R is a hydrocarbon chain. ### Claim 3 (depends on 1) The method according to claim 1, wherein the aqueous solution includes a colorant. ### Claim 4 (depends on 3) The method according to claim 3, wherein the colorant is a color pigment. ### Claim 5 (depends on 1) The method according to claim 1, wherein the one or more chemical reactants include a thermally curable compound or a UV curable compound. ### Claim 6 (depends on 5) The method according to claim 5, wherein the thermally curable compound includes one or more blocked isocyanate groups. ### Claim 7 (depends on 5) The method according to claim 5, wherein the UV curable compound is a monomer, oligomer, or polymer including one or more free radical curable groups. ### Claim 8 (depends on 1) The method according to claim 1, wherein the first shell component of the polymeric shell is selected from the group consisting of di-isocyanates and oligoisocyanates. ### Claim 9 (depends on 5) The method according to claim 5, wherein the first shell component of the polymeric shell is selected from the group consisting of di-isocyanates and oligoisocyanates. ### Claim 10 (depends on 6) The method according to claim 6, wherein the first shell component of the polymeric shell is selected from the group consisting of di-isocyanates and oligoisocyanates. ### Claim 11 (depends on 8) The method according to claim 8, wherein the second shell component of the polymeric shell is selected from the group consisting of diamines and oligoamines, and/or selected from the group consisting of dialcohols and oligoalcohols. ### Claim 12 (depends on 10) The method according to claim 10, wherein the second shell component of the polymeric shell is selected from the group consisting of diamines and oligoamines, and/or selected from the group consisting of dialcohols and oligoalcohols. ### Claim 13 (depends on 1) The method according to claim 1, wherein the amphoteric surfactant is one or more surfactants selected from the group consisting of: ### Claim 14 (depends on 5) The method according to claim 5, wherein the amphoteric surfactant is one or more surfactants selected from the group consisting of: ### Claim 15 (depends on 6) The method according to claim 6, wherein the amphoteric surfactant is one or more surfactants selected from the group consisting of: ### Claim 16 (depends on 1) A method for manufacturing aqueous resin based inkjet inks, the method comprising the steps of: providing capsules manufactured according to the method of claim 1; and dispersing the capsules in an aqueous medium. ### Claim 17 (depends on 5) A method for manufacturing aqueous resin based inkjet inks, the method comprising the steps of: providing capsules manufactured according to the method of claim 5; and dispersing the capsules in an aqueous medium. ### Claim 18 (depends on 6) A method for manufacturing aqueous resin based inkjet inks, the method comprising the steps of: providing capsules manufactured according to the method of claim 6; and dispersing the capsules in an aqueous medium. ### Claim 19 (depends on 8) A method for manufacturing aqueous resin based inkjet inks, the method comprising the steps of: providing capsules manufactured according to the method of claim 8; and dispersing the capsules in an aqueous medium. ### Claim 20 (depends on 1) Capsules self-dispersible in an aqueous medium for an aqueous inkjet ink obtained by performing the steps a) to e) of claim 1. ### Claim 21 (depends on 20) An aqueous inkjet ink comprising: the capsules according to claim 20. ### Claim 22 (depends on 21) The aqueous inkjet ink according to claim 21, wherein the capsules include a colorant selected from the group consisting of C.I. Pigment Blue 15:3, C.I. Pigment Red 122, C.I. Pigment Yellow 155, and carbon black.