# US 8,540,813 B2 · Intaglio printing ink comprising dendrimers > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,540,813 B2 - Document ID: US8540813B2 - Status: Granted - Kind: B2 - Application number: 13/000,883 - Filed: 2009-06-23 - Published: 2011-05-12 - Granted: 2013-09-24 - Earliest claimed: 2009-06-23 - Assignees: Sicpa Holding SA - Applicants: Anne Grosset; Olivier Lefèbvre; Christophe Schaller; Nicolas Trachsel; Patrick Magnin; Patrick Veya - Inventors: Anne Grosset; Olivier Lefèbvre; Christophe Schaller; Nicolas Trachsel; Patrick Magnin; Patrick Veya - Web page: https://patentgrep.com/patent/US8540813B2 ## CPC - C09D 11/102: containing macromolecular compounds obtained by reactions other than those only involving unsaturated carbon-to-carbon bonds - B41M 1/10: Intaglio printing {; Gravure printing} - 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) - B41M: PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING, (correction of typographical errors B41J; processes for applying transfer pictures or the like B44C1/16; fluid media for correction of typographical errors by coating C09D10/00; printing textiles D06P) ## Abstract An ink for the engraved copperplate intaglio printing inks is disclosed, which comprises high-molecular-weight dendritic polymer as a binder component. Inks comprising such polymer can be formulated so as to contain a significantly reduced amount of organic solvent (volatile organic components, VOC) while still being in the appropriate viscosity range required by the intaglio printing process. The printed and cured intaglio ink of the present invention has improved chemical and mechanical resistance properties. ## Claims ### Claim 1 Ink for the copperplate intaglio printing process, comprising a binder, pigment, filler and optionally solvent, the ink having a viscosity in the range of 3 to 60 Pa·s at 40° C., wherein the binder comprises at least one dendritic polymer selected from the group consisting of unsaturated fatty acid modified hydroxyl-functionalized hyperbranched polyesters and wherein the ink further comprises at least one wax or a blend of waxes. ### Claim 2 (depends on 1) Ink according to claim 1, wherein said unsaturated fatty acid modified hydroxyl-functionalized hyperbranched polyester has a molecular weight ranging from 2,500 to 10,000 g/mol. ### Claim 3 (depends on 1) Ink according to claim 1, wherein said unsaturated fatty acid modified hyperbranched polyester is present in an amount ranging from 1% to 50% by weight. ### Claim 4 (depends on 1) Ink according to claim 1, further comprising at least one dendritic polymer selected from the group consisting of saturated fatty acid modified hydroxyl-functionalized hyperbranched polyesters. ### Claim 5 (depends on 4) Ink according to claim 4, wherein said saturated fatty acid modified hydroxyl-functionalized hyperbranched polyester has a molecular weight ranging from 1,000 to 10,000 g/mol. ### Claim 6 (depends on 4) Ink according to claim 4, wherein said saturated fatty acid modified hydroxyl-functionalized hyperbranched polyester is present in an amount ranging from 1% to 10% by weight. ### Claim 7 (depends on 1) Ink according to claim 1, further comprising a siccativating agent for initiating drying by oxypolymerisation of the ink. ### Claim 8 (depends on 1) Ink according to claim 1, further comprising at least one dendritic polymer selected from the group consisting of derivatives of hydroxyl-functionalized hyperbranched polyesters, with energy-curable, reactive chemical functionality. ### Claim 9 (depends on 8) Ink according to claim 8, wherein the energy-curable, reactive chemical functionality comprises a chemical functionality selected from the group consisting of acrylates, methacrylates, vinyl ethers, epoxides, and oxetanes. ### Claim 10 (depends on 8) Ink according to claim 8, wherein the energy-curable hydroxyl-functionalized hyperbranched polyester has a molecular weight ranging from 1,000 to 10,000 g/mol. ### Claim 11 (depends on 8) Ink according to claim 8, wherein the energy-curable hydroxyl-functionalized hyperbranched polyester is present in an amount ranging from 1% to 10% by weight. ### Claim 12 (depends on 8) Ink according claim 8, further comprising a photoinitiator. ### Claim 13 (depends on 1) Ink according to claim 1 utilized in the printing of security documents. ### Claim 14 (depends on 1) A security document carrying the ink according to claim 1. ### Claim 15 (depends on 1) The ink of claim 1, wherein said unsaturated fatty acid modified hydroxyl-functionalized hyperbranched polyester is derived from 2,2-dimethylolpropionic acid. ### Claim 16 (depends on 4) The ink of claim 4, wherein the saturated fatty acid modified hydroxyl-functionalized hyperbranched polyester is derived from 2,2-dimethylolpropionic acid. ### Claim 17 (depends on 8) The ink of claim 8, wherein the hydroxyl-functionalized hyperbranched polyester is derived from 2,2-dimethylolpropionic acid. ### Claim 18 (depends on 10) The ink of claim 10, wherein the energy-curable hydroxyl-functionalized hyperbranched polyester has a molecular weight ranging from 2,500 to 5,000 g/mol. ### Claim 19 (depends on 1) Method for producing an ink according to claim 1, the method comprising adding to the ink at least one derivative of a dendritic polymer, selected from the group consisting of unsaturated fatty acid modified hydroxyl-functionalized hyperbranched polyesters; and adding to the ink at least one wax or a blend of waxes. ### Claim 20 (depends on 1) Method for producing an ink according to claim 1, the method comprising cooking a saturated fatty acid modified hydroxyl-functionalized hyperbranched polyester with a phenolic resin or a phenolic modified rosin ester; and adding the cooked saturated fatty acid modified hydroxyl-functionalized hyperbranched polyester with a phenolic resin or phenolic modified rosin ester to the ink. ### Claim 21 (depends on 5) Ink according to claim 5, wherein said saturated fatty acid modified hydroxyl-functionalized hyperbranched polyester has a molecular weight ranging from 2,500 to 5,000 g/mol. ### Claim 22 (depends on 1) A banknote carrying the ink according to claim 1. ### Claim 23 (depends on 19) Method for producing an ink according to claim 19, wherein the at least one derivative of a dendritic polymer is derived from 2,2-dimethylolpropionic acid.