# US 10,767,057 B2 · Coating film, composition for coating film, film-forming agent, article having coating film, and method for forming coating film > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,767,057 B2 - Document ID: US10767057B2 - Status: Granted - Kind: B2 - Application number: 16/092,799 - Filed: 2017-02-24 - Published: 2019-03-21 - Granted: 2020-09-08 - Earliest claimed: 2016-04-12 - Assignees: Daikin Industries, Ltd.; Otsuka Packaging Industries Co., Ltd.; Otsuka Pharmaceutical Factory, Inc. - Applicants: Daikin Industries, Ltd.; Otsuka Packaging Industries Co., Ltd.; Otsuka Pharmaceutical Factory, Inc. - Inventors: Tetsuya Uehara; Eiji Masuda; Kenta Shimada; Daichi Shibazaki; Fujio Inoue - Web page: https://patentgrep.com/patent/US10767057B2 ## CPC - 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 - B05D 7/24: for applying particular liquids or other fluent materials - B32B 27/30: comprising vinyl {(co)polymers; comprising acrylic (co)polymers} - B65D 65/42: Applications of coated or impregnated materials - C09D 7/40: Additives - C09D 7/68: {Particle size between 100-1000 nm} - C09D 7/69: {Particle size larger than 1000 nm} - C09D 129/04: Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids - C09D 133/16: Homopolymers or copolymers of esters containing halogen atoms - C09D 133/18: Homopolymers or copolymers of nitriles - C08K 2003/265: {Calcium, strontium or barium carbonate} - 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) - B05D: PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL (conveying articles or workpieces through baths of liquid B65G, e.g. B65G49/02) - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM - B65D: CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES - C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09) ## Abstract A coating film exhibiting excellent water and oil repellency is provided. The coating film comprises (a) calcium carbonate having an average particle diameter of 600-9,000 nm, (b) poly(vinyl alcohol), and (c) a copolymer including constituent units of a monomer having a C6 or lower perfluoroalkyl group. ## Claims ### Claim 1 A coating film comprising: (a) calcium carbonate having an average particle diameter of 600 nm to 9000 nm; (b) a polyvinyl alcohol; and (c) a copolymer comprising, as a constituent unit, a monomer having a perfluoroalkyl group of not more than 6 carbon atoms. ### Claim 2 (depends on 1) The coating film according to claim 1, wherein a degree of saponification of (b) the polyvinyl alcohol is 97 mol % or more. ### Claim 3 (depends on 1) The coating film according to claim 1, wherein (a) the calcium carbonate having an average particle diameter of 600 nm to 9000 nm is at least one of porous calcium carbonate and aggregated calcium carbonate. ### Claim 4 (depends on 1) The coating film according to claim 1, comprising: a first layer comprising (a) the calcium carbonate having an average particle diameter of 600 to 9000 nm and (b) the polyvinyl alcohol; and a second layer comprising (c) the copolymer comprising, as a constituent unit, the monomer having the perfluoroalkyl group of not more than 6 carbon atoms. ### Claim 5 A composition for coating film, comprising: (a) calcium carbonate having an average particle diameter of 600 to 9000 nm; (b) a polyvinyl alcohol; and (c) a copolymer comprising, as a constituent unit, a monomer having a perfluoroalkyl group of not more than 6 carbon atoms. ### Claim 6 (depends on 5) The composition for coating film according to claim 5, wherein a degree of saponification of (b) the polyvinyl alcohol is 97 mol % or more. ### Claim 7 (depends on 5) The composition for coating film according to claim 5, wherein (a) the calcium carbonate having an average particle diameter of 600 nm to 9000 nm is at least one of porous calcium carbonate and aggregated calcium carbonate. ### Claim 8 (depends on 5) The composition for coating film according to claim 5, wherein a content of (a) the calcium carbonate having an average particle diameter of 600 nm to 9000 nm is 5% to 30% by mass, a content of (b) the polyvinyl alcohol is 0.1% to 15% by mass, and a content of (c) the copolymer comprising, as a constituent unit, the monomer having the perfluoroalkyl group of not more than 6 carbon atoms is 0.2% to 20% by mass, and wherein the composition is an aqueous dispersion. ### Claim 9 A film-forming agent comprising: a first agent comprising (a) calcium carbonate having an average particle diameter of 600 nm to 9000 nm, and (b) a polyvinyl alcohol; and a second agent comprising (c) a copolymer comprising, as a constituent unit, a monomer having a perfluoroalkyl group of not more than 6 carbon atoms. ### Claim 10 (depends on 1) An article having the coating film according to claim 1 on at least a portion of a surface of the article. ### Claim 11 (depends on 10) The article according to claim 10, wherein the surface is formed of paper, plastic, glass, or metal. ### Claim 12 (depends on 10) The article according to claim 10, wherein the article is a packaging material. ### Claim 13 (depends on 1) A paper container having the coating film according to claim 1 on an inner surface of the paper container. ### Claim 14 (depends on 4) A method for forming the coating film according to claim 4 on a surface of an article, the method comprising: a step 1 of applying, onto the surface of the article, a first agent comprising (a) the calcium carbonate having an average particle diameter of 600 to 9000 nm and (b) the polyvinyl alcohol, followed by drying to form a first layer; and a step 2 of applying, onto the first layer, a second agent comprising (c) the copolymer comprising, as a constituent unit, the monomer having the perfluoroalkyl group of not more than 6 carbon atoms, followed by drying to form a second layer. ### Claim 15 (depends on 5) A method of forming a coating film on a surface of an article, the method comprising a step of applying the composition for coating film according to claim 5 on the surface of the article, followed by drying.