# US 8,770,736 B2 · Inkjet ink composition containing anti-kogation agents > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,770,736 B2 - Document ID: US8770736B2 - Status: Granted - Kind: B2 - Application number: 13/513,562 - Filed: 2009-12-21 - Published: 2012-10-04 - Granted: 2014-07-08 - Earliest claimed: 2009-12-21 - Assignees: Hewlett-Packard Development Company, L.P. - Applicants: Sundar Vasudevan; Qin Liu; James P. Shields - Inventors: Sundar Vasudevan; Qin Liu; James P. Shields - Web page: https://patentgrep.com/patent/US8770736B2 ## CPC - C09D 11/38: characterised by non-macromolecular additives other than solvents, pigments or dyes - 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 Ink compositions and methods of using the same are disclosed. An example ink composition includes an inkjet vehicle, from about 0.1 wt % to about 10 wt % of colorants, from about 0.01 wt % to about 10 wt % of anti-kogation agents, and from about 0.01 wt % to about 10 wt % of dispersed resin beads. ## Claims ### Claim 1 An inkjet ink composition, comprising: a. an inkjet vehicle, b. from about 0.1 to about 10 weight percentage of colorants, c. from about 0.01 to about 10 weight percentage of anti-kogation agents, d. and from about 0.01 to about 10 weight percentage of dispersed resin beads, wherein the resin beads have a diameter that is bigger than a pore size of a filter in an ink delivery system of the inkjet ink composition, and wherein the resin beads are to bind multivalent metal ions. ### Claim 2 (depends on 1) The inkjet ink according to claim 1 wherein the diameter of the dispersed resin beads is at least 1 μm. ### Claim 3 (depends on 1) The inkjet ink according to claim 1 wherein the diameter of the dispersed resin beads ranges from about 5 to about 800 μm. ### Claim 4 (depends on 1) The inkjet ink according to claim 1 wherein the dispersed resin beads comprise an organic polymer or an inorganic polymer and a functional group. ### Claim 5 (depends on 1) The inkjet ink according to claim 1 wherein the dispersed resin beads contain a functional group selected from the group consisting of iminodiacetic acid group (IDA), aminomethylphosphonic acid (AMPA) group or diethylenetriaminetetraacetate (TAAcOH) group. ### Claim 6 (depends on 1) The inkjet ink according to claim 1 wherein the anti-kogation agent is a phosphate-containing surfactant. ### Claim 7 (depends on 1) The inkjet ink according to claim 1 wherein the anti-kogation agent is a phosphate ester surfactant. ### Claim 8 (depends on 1) The inkjet ink according to claim 1 wherein the anti-kogation agent is a phosphate ester of a fatty alcohol alkoxylate surfactant. ### Claim 9 (depends on 1) The inkjet ink according to claim 1 wherein the anti-kogation agent is an ethoxylated mono-oleyl phosphate ester surfactant. ### Claim 10 (depends on 1) The inkjet ink according to claim 1 wherein the anti-kogation agent is selected from the group consisting of oleth-3 phosphate, oleth-10 phosphate, oleth-5 phosphate, dioleyl phosphate, ppg-5-ceteth-10 phosphate, C9-C15 alkyl monophosphate, deceth-4 phosphate, and mixtures thereof. ### Claim 11 (depends on 1) The inkjet ink according to claim 1 wherein the anti-kogation agent has the formula (II) and wherein n is from 0 to 15: ### Claim 12 (depends on 1) The inkjet ink of claim 1, wherein the anti-kogation agent is present in an amount representing from about 0.2 to about 3 weight percentage by weight of the ink composition. ### Claim 13 (depends on 1) The inkjet ink according to claim 1 wherein the colorant is a pigment. ### Claim 14 (depends on 1) The inkjet ink according to claim 1 wherein the resin beads are selected from the group consisting of a polyamide, an unsaturated a polyester, a polyurethane, an epoxy, a silicone, a copolymer of an unsatured dicarboxylic acid and styrene, a polystyrene cross-linked with divinylbenzene, and precipitated silica, and wherein the resin beads include a functional group selected from the group consisting of a di-acid group, a homologue of ethylenediamine with acetic acid, and a substituted methylphosphonic acid. ### Claim 15 A method of inkjet printing over a prolonged period of time, comprising jetting an inkjet ink onto a media substrate, wherein said inkjet ink includes: a. an inkjet vehicle, b. from about 0.1 to about 10 weight percentage of colorants, c. from about 0.01 to about 10 weight percentage of anti-kogation agents, d. and from about 0.01 to about 10 weight percentage of dispersed resin beads, wherein the resin beads have a diameter that is bigger than a pore size of a filter in an ink delivery system of the inkjet ink, and wherein the resin beads are to bind multivalent metal ions. ### Claim 16 (depends on 15) The method of inkjet printing over a prolonged period of time, according to claim 15, wherein: the anti-kogation agent has the formula (II) and wherein n is from 0 to 15: and the resin beads include an organic polymer or an inorganic polymer and a functional group selected from the group consisting of iminodiacetic acid group (IDA), aminomethylphosphonic acid (AMPA) group or diethylenetriaminetetraacetate (TAAcOH) group.