# US 2018/0022943 A1 · Anti-fogging coating composition, and anti-fogging film and transparent article using the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0022943 A1 - Document ID: US20180022943A1 - Status: Published application - Kind: A1 - Application number: 15/485,391 - Filed: 2017-04-12 - Published: 2018-01-25 - Earliest claimed: 2016-07-22 - Assignees: Hon Hai Precision Industry Co., Ltd. - Applicants: Hon Hai Precision Industry Co., Ltd. - Inventors: HSIU-WEN CHIEN - Web page: https://patentgrep.com/patent/US20180022943A1 ## CPC - C09D 7/63: organic - C09D 5/00: Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced {(electrically insulating plastics, resins or waxes H01B3/30)}; Filling pastes - C09D 7/61: inorganic - C09D 179/02: Polyamines - C09K 3/18: for application to surfaces to minimize adherence of ice, mist or water thereto (rendering particulate materials free flowing, in general, e.g. making them hydrophobic B01J2/30); Thawing or antifreeze materials for application to surfaces (used in liquids for heat-transfer, heat-exchange or heat-storage or for the production of heat or cold other than by combustion, e.g. radiator liquids, C09K5/00) - C08K 3/36: Silica - C08K 5/17: Amines; Quaternary ammonium compounds - C08K 2003/2244: {of zirconium} - C09D 7/40: Additives - C09D 7/70: {characterised by shape, e.g. fibres, flakes or microspheres} - 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) - C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE - C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09) ## Abstract An anti-fogging coating composition comprises a dopamine, a hydrophilic polymer, a plurality of inorganic oxide particles, and a solvent. The dopamine reduces film forming time of an anti-fogging coating. An anti-fogging film using the anti-fogging coating composition, and a transparent article using the anti-fogging film are also provided. ## Claims ### Claim 1 An anti-fogging coating composition comprising: a dopamine; a hydrophilic polymer; a plurality of inorganic oxide particles; and a solvent. ### Claim 2 (depends on 1) The anti-fogging coating composition of claim 1, wherein the dopamine has a mass percentage of about 1% to about 20% of a total mass of the anti-fogging coating composition, the hydrophilic polymer has a mass percentage of about 10% to about 45% of the total mass of the anti-fogging coating composition, the plurality of the inorganic oxide particles has a mass percentage of about 40% to about 80% of the total mass of the anti-fogging coating composition, the solvent has a mass percentage of about 5% to about 47% of the total mass of the anti-fogging coating composition. ### Claim 3 (depends on 1) The anti-fogging coating composition of claim 1, wherein the hydrophilic polymer has at least one amino-group, the hydrophilic polymer is selected from a linear polymer, a nonlinear polymer, or any combination thereof. ### Claim 4 (depends on 3) The anti-fogging coating composition of claim 3, wherein the linear polymer is selected from a polymer of hydrophilic monomer and N-(3-Aminopropyl)methacrylamide (1°-N), a polymer of hydrophilic monomer and N-[3-(Dimethylamino)propyl]methacrylamide (2°-N), a polymer of hydrophilic monomer and [3-(Methacryloylamino)propyl]trimethylammonium (3°-N), or any combination thereof, the hydrophilic monomer is selected from polyethylene glycol methacrylic acid, N-vinylpyrrolidone, N,N-Dimethylacrylamide, allyl phenyl ether, or any combination thereof. ### Claim 5 (depends on 3) The anti-fogging coating composition of claim 3, wherein the nonlinear polymer is selected from a polymer of polyethyleneimine and polyethylene glycol, a polymer of polyethyleneimine and polyvinyl pyrrolidone, or any combination thereof. ### Claim 6 (depends on 1) The anti-fogging coating composition of claim 1, wherein the plurality of inorganic oxide particles is selected from particles of silica, zirconia, alumina, titania, or any combination thereof. ### Claim 7 (depends on 1) The anti-fogging coating composition of claim 1, wherein the solvent is water, an alcohol aqueous solution, or an oxidizing aqueous solution, the alcohol aqueous solution is a methanol aqueous solution, an ethanol aqueous solution, or a propanol aqueous solution, the oxidizing aqueous solution is a sodium periodate aqueous solution. ### Claim 8 An anti-fogging film formed from: an anti-fogging coating composition, the anti-fogging coating composition comprising: a dopamine; a hydrophilic polymer; a plurality of inorganic oxide particles; and a solvent. ### Claim 9 (depends on 8) The anti-fogging film of claim 8, wherein the dopamine has a mass percentage of about 1% to about 20% of a total mass of the anti-fogging coating composition, the hydrophilic polymer has a mass percentage of about 10% to about 45% of the total mass of the anti-fogging coating composition, the plurality of the inorganic oxide particles has a mass percentage of about 40% to about 80% of the total mass of the anti-fogging coating composition, the solvent has a mass percentage of about 5% to about 47% of the total mass of the anti-fogging coating composition. ### Claim 10 (depends on 8) The anti-fogging film of claim 8, wherein the hydrophilic polymer has at least one amino-group, the hydrophilic polymer is selected from a linear polymer, a nonlinear polymer, or any combination thereof. ### Claim 11 (depends on 10) The anti-fogging film of claim 10, wherein the linear polymer is selected from a polymer of hydrophilic monomer and N-(3-Aminopropyl)methacrylamide (1°-N), a polymer of hydrophilic monomer and N-[3-(Dimethylamino)propyl]methacrylamide (2°-N), a polymer of hydrophilic monomer and [3-(Methacryloylamino)propyl]trimethylammonium (3°-N), or any combination thereof, the hydrophilic monomer is selected from polyethylene glycol methacrylic acid, N-vinylpyrrolidone, N,N-Dimethylacrylamide, allyl phenyl ether, or any combination thereof. ### Claim 12 (depends on 10) The anti-fogging film of claim 10, wherein the nonlinear polymer is selected from a polymer of polyethyleneimine and polyethylene glycol, a polymer of polyethyleneimine and polyvinyl pyrrolidone, or any combination thereof. ### Claim 13 (depends on 8) The anti-fogging film of claim 8, wherein the plurality of inorganic oxide particles is selected from particles of silica, zirconia, alumina, titania, or any combination thereof, the solvent is water, an alcohol aqueous solution, or an oxidizing aqueous solution, the alcohol aqueous solution is a methanol aqueous solution, an ethanol aqueous solution, or a propanol aqueous solution, the oxidizing aqueous solution is a sodium periodate aqueous solution. ### Claim 14 A transparent article comprising: a substrate; and an anti-fogging film attached to at least one surface of the substrate, the anti-fogging film is formed from an anti-fogging coating composition, the anti-fogging coating composition comprising: a dopamine; a hydrophilic polymer; a plurality of inorganic oxide particles; and a solvent. ### Claim 15 (depends on 14) The transparent article of claim 14, wherein the dopamine has a mass percentage of about 1% to about 20% of a total mass of the anti-fogging coating composition, the hydrophilic polymer has a mass percentage of about 10% to about 45% of the total mass of the anti-fogging coating composition, the plurality of the inorganic oxide particles has a mass percentage of about 40% to about 80% of the total mass of the anti-fogging coating composition, the solvent has a mass percentage of about 5% to about 47% of the total mass of the anti-fogging coating composition. ### Claim 16 (depends on 14) The transparent article of claim 14, wherein the hydrophilic polymer has at least one amino-group, the hydrophilic polymer is selected from a linear polymer, a nonlinear polymer, or any combination thereof. ### Claim 17 (depends on 16) The transparent article of claim 16, wherein the linear polymer is selected from a polymer of hydrophilic monomer and N-(3-Aminopropyl)methacrylamide (1°-N), a polymer of hydrophilic monomer and N-[3-(Dimethylamino)propyl]methacrylamide (2°-N), a polymer of hydrophilic monomer and [3-(Methacryloylamino)propyl]trimethylammonium (3°-N), or any combination thereof, the hydrophilic monomer is selected from polyethylene glycol methacrylic acid, N-vinylpyrrolidone, N,N-Dimethylacrylamide, allyl phenyl ether, or any combination thereof. ### Claim 18 (depends on 16) The transparent article of claim 16, wherein the nonlinear polymer is selected from a polymer of polyethyleneimine and polyethylene glycol, a polymer of polyethyleneimine and polyvinyl pyrrolidone, or any combination thereof. ### Claim 19 (depends on 14) The transparent article of claim 14, wherein the plurality of inorganic oxide particles is selected from particles of silica, zirconia, alumina, titania, or any combination thereof. ### Claim 20 (depends on 14) The transparent article of claim 14, wherein the solvent is water, an alcohol aqueous solution, or an oxidizing aqueous solution, the alcohol aqueous solution is a methanol aqueous solution, an ethanol aqueous solution, or a propanol aqueous solution, the oxidizing aqueous solution is a sodium periodate aqueous solution.