# US 2020/0399777 A1 · Coating method for cationic electrodeposition coating material > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2020/0399777 A1 - Document ID: US20200399777A1 - Status: Published application - Kind: A1 - Application number: 16/971,363 - Filed: 2019-02-20 - Published: 2020-12-24 - Earliest claimed: 2018-02-23 - Assignees: Kansai Paint Co., Ltd. - Applicants: Kansai Paint Co., Ltd. - Inventors: Takamasa FUKUI; Yuya MIYOSHI; Akira SUEHIRO - Web page: https://patentgrep.com/patent/US20200399777A1 ## CPC - C08G 59/66: Mercaptans - C25D 9/02: with organic materials - C08G 59/302: {containing sulfur} - C08G 59/68: characterised by the catalysts used - C09D 5/4438: {Binder based on epoxy/amine adducts, i.e. reaction products of polyepoxides with compounds containing amino groups only} - C09D 5/4453: {characterised by the nature of the curing agent} - C09D 7/63: organic - C09D 163/00: Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins - C25D 13/00: Electrophoretic coating characterised by the process (C25D15/00 takes precedence; compositions for electrophoretic coating C09D5/44) - C25D 13/22: Servicing or operating {apparatus or multistep processes} - C08K 5/0033: {Additives activating the degradation of the macromolecular compound} - C08K 5/17: Amines; Quaternary ammonium compounds - C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS - C25D: PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR - 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) - C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09) ## Abstract A coating method for a cationic electrodeposition coating material includes: a step of immersing a metallic article to be coated in a first solution bath, a step of immersing the article in a second solution bath and a step of immersing the article in a third solution bath; and at least one of the three steps includes a cationic electrodeposition coating in which a current is applied. A coating film formed through the three steps contains at least: a base resin component (A), a reaction component (B) and a catalyst (C). The first solution bath, the second solution bath and the third solution bath contain the base resin component (A), the reaction component (B) and the catalyst (C) in a combination of one or two of the components. ## Claims ### Claim at position 1 -8. (canceled) ### Claim 9 A coating method for a cationic electrodeposition coating material, wherein a metallic article to be coated is coated by cationic electrodeposition, the method comprising: a step of immersing the metallic article to be coated in a first solution bath; a step of immersing the metallic article to be coated in a second solution bath; and a step of immersing the metallic article to be coated in a third solution bath, wherein at least one of the three steps includes a cationic electrodeposition coating in which a current is applied, wherein a coating film formed through the three steps contains at least a base resin component (A), a reaction component (B) and a catalyst (C), and wherein the first solution bath, the second solution bath and the third solution bath contain the base resin component (A), the reaction component (B) and the catalyst (C) in a combination of one or two of the components. ### Claim 10 (depends on 9) The coating method for the cationic electrodeposition coating material according to claim 9, wherein the combination of the base resin component (A), the reaction component (B) and the catalyst (C) is respectively a Michael addition reaction acceptor component, a Michael addition reaction donor component and a Michael addition reaction catalyst, or the Michael addition reaction donor component, the Michael addition reaction acceptor component and the Michael addition reaction catalyst. ### Claim 11 (depends on 9) The coating method for the cationic electrodeposition coating material according to claim 9, wherein the combination of the base resin component (A), the reaction component (B) and the catalyst (C) is respectively an epoxy group-containing component, a thiol group-containing component and a catalyst; or the thiol group-containing component, the epoxy group-containing component and the catalyst. ### Claim 12 (depends on 9) The coating method for the cationic electrodeposition coating material according to claim 9, the method further comprising: a step of water washing after at least one of the steps. ### Claim 13 (depends on 9) The coating method for the cationic electrodeposition coating material according to claim 9, wherein the catalyst (C) is a microencapsulated catalyst. ### Claim 14 (depends on 9) The coating method for the cationic electrodeposition coating material according to claim 9, the method further comprising: a step of curing the formed coating film at a temperature of 130° C. or less. ### Claim 15 (depends on 9) The coating method for the cationic electrodeposition coating material according to claim 9, the method further comprising: a step of curing the formed coating film by electromagnetic-induction heating. ### Claim 16 A coating method for a cationic electrodeposition coating material, wherein a metallic article to be coated is coated by cationic electrodeposition, the method comprising: a step of immersing the metallic article to be coated in a first solution bath; and a step of immersing the metallic article to be coated in a second solution bath, wherein at least one of the two steps includes a cationic electrodeposition coating in which a current is applied, wherein a coating film formed through the two steps contains at least a base resin component (A), a reaction component (B) and a catalyst (C), and wherein the first solution bath and the second solution bath contain the base resin component (A), the reaction component (B) and the catalyst (C) in a combination of one or two of the components or in a combination of two of the components. ### Claim 17 (depends on 16) The coating method for the cationic electrodeposition coating material according to claim 16, wherein the combination of the base resin component (A), the reaction component (B) and the catalyst (C) is respectively a Michael addition reaction acceptor component, a Michael addition reaction donor component and a Michael addition reaction catalyst, or the Michael addition reaction donor component, the Michael addition reaction acceptor component and the Michael addition reaction catalyst. ### Claim 18 (depends on 16) The coating method for the cationic electrodeposition coating material according to claim 16, wherein the combination of the base resin component (A), the reaction component (B) and the catalyst (C) is respectively an epoxy group-containing component, a thiol group-containing component and a catalyst; or the thiol group-containing component, the epoxy group-containing component and the catalyst. ### Claim 19 (depends on 16) The coating method for the cationic electrodeposition coating material according to claim 16, the method further comprising: a step of water washing after at least one of the steps. ### Claim 20 (depends on 16) The coating method for the cationic electrodeposition coating material according to claim 16, wherein the catalyst (C) is a microencapsulated catalyst. ### Claim 21 (depends on 16) The coating method for the cationic electrodeposition coating material according to claim 16, the method further comprising: a step of curing the formed coating film at a temperature of 130° C. or less. ### Claim 22 (depends on 16) The coating method for the cationic electrodeposition coating material according to claim 16, the method further comprising: a step of curing the formed coating film by electromagnetic-induction heating. ### Claim 23 (depends on 10) The coating method for the cationic electrodeposition coating material according to claim 10, the method further comprising: a step of curing the formed coating film by electromagnetic-induction heating. ### Claim 24 (depends on 11) The coating method for the cationic electrodeposition coating material according to claim 11, the method further comprising: a step of curing the formed coating film by electromagnetic-induction heating. ### Claim 25 (depends on 12) The coating method for the cationic electrodeposition coating material according to claim 12, the method further comprising: a step of curing the formed coating film by electromagnetic-induction heating. ### Claim 26 (depends on 13) The coating method for the cationic electrodeposition coating material according to claim 13, the method further comprising: a step of curing the formed coating film by electromagnetic-induction heating. ### Claim 27 (depends on 14) The coating method for the cationic electrodeposition coating material according to claim 14, the method further comprising: a step of curing the formed coating film by electromagnetic-induction heating. ### Claim 28 (depends on 17) The coating method for the cationic electrodeposition coating material according to claim 17, the method further comprising: a step of curing the formed coating film by electromagnetic-induction heating.