# US 10,370,544 B2 · High quality biocidal paint > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,370,544 B2 - Document ID: US10370544B2 - Status: Granted - Kind: B2 - Application number: 15/201,658 - Filed: 2016-07-05 - Published: 2017-03-30 - Granted: 2019-08-06 - Earliest claimed: 2011-09-30 - Assignees: The Sherwin-Williams Company - Applicants: The Sherwin-Williams Company - Inventors: Kathleen R Gisser; Morgan S Sibbald; Wanda J Smith; Janice K. Dreshar; Donald A. Prochazka; Tony A. Rook - Web page: https://patentgrep.com/patent/US10370544B2 ## CPC - C09D 5/1625: {organic} - A01N 33/12: Quaternary ammonium compounds - A01N 43/40: six-membered rings - A61K 31/14: Quaternary ammonium compounds, e.g. edrophonium, choline (betaines A61K31/205) - A61K 31/4425: Pyridinium derivatives, e.g. pralidoxime, pyridostigmine - C08K 5/17: Amines; Quaternary ammonium compounds - C09D 5/14: Paints containing biocides, e.g. fungicides, insecticides or pesticides (C09D5/16 takes precedence) - C09D 133/08: Homopolymers or copolymers of acrylic acid esters - Y02A 50/30: Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change - 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) - A01N: PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF (preservation of food or foodstuff A23); BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES (preparations for medical, dental or toiletry purposes which kill or prevent the growth or proliferation of unwanted organisms A61K); PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS - A61K: PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES (devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms A61J3/00; chemical aspects of, or use of materials for deodorisation of air, for disinfection or sterilisation, or for bandages, dressings, absorbent pads or surgical articles A61L; soap compositions C11D) - C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09) - Y02A: TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE ## Abstract A high quality paint comprises water, latex polymer, pigment, and biocidal agent. The coating provided by the high quality paint may be capable of killing gram positive bacteria, gram negative bacteria at a rate of greater than 3 logs within 2 hours of application of bacteria to a painted surface. The coating provided by the high quality of paint may be capable of continuing to kill gram positive bacteria, gram negative bacteria at a rate of greater than 1 log within 2 hours even after repeated contamination of the surface. The coating provided by the high quality paint may be capable of delivering residual killing of gram positive bacteria, gram negative bacteria for up to 48 months. The coating provided by the high quality paint may also be capable of inactivating viruses. ## Claims ### Claim 1 A surface comprising: (a) a coating, the coating having a dry coating thickness of about 25 microns to about 400 microns, and wherein the coating is a dried film of a liquid paint, said liquid paint having a pigment volume concentration (PVC) of less than about 60 and comprising: (i) a biocidal agent comprising a quaternary ammonium compound; (ii) at least about 10% by weight pigment; (iii) a binder polymer having a compatibility score of 0.5 or less, and (b) wherein the surface has the ability to kill bacteria, the bacteria selected from the group consisting of: gram positive, gram negative, pathogenic, disease-causing, methicillin-resistant Staphylococcus aureus, Staphylococcus aureus, vancomycin-resistant Enterococcus faecalis, Escherichia coli, Enterobacter aerogenes, and combinations thereof, characterized by a Rook Rating for said bacteria of greater than 0.90, the Rook Rating being calculated from the following formula: Rook Rating =EfficacyEvent/ EfficacyInitial the EfficacyInitial being the initial biocidal efficacy of a test surface coated with the coating and the EfficacyEvent being the biocidal efficacy of the test surface after fifty washings. ### Claim 2 (depends on 1) The surface according to claim 1 wherein the Rook Rating for said bacteria is greater than 0.99. ### Claim 3 (depends on 2) The surface according to claim 2 wherein the Rook Rating for said bacteria is greater than 0.999. ### Claim 4 (depends on 3) The surface according to claim 3 wherein the Rook Rating for said bacteria is greater than 0.9999. ### Claim 5 (depends on 1) The surface of claim 1, wherein the quaternary ammonium compound has the structural formula: wherein R1 and R2 are linear or branched chain alkyl groups or mixtures of groups having 1-7 carbons, R3 is a linear or branched chain alkyl group or a mixture of groups containing 6-20 carbons, and R4 is a linear or branched chain alkyl-group or a mixture of groups having 6-20 carbons, benzyl or alkyl benzyl groups, or where R3 and R4 may be the same or different from each other, and X represents a halide, carbonate, methosulfate, or saccharinate. ### Claim 6 (depends on 5) The surface according to claim 5, wherein the paint comprises about 0.46 to about 0.58 percent by weight of the quaternary ammonium compound. ### Claim 7 (depends on 5) The surface of claim 5, wherein the paint comprises about 0.25% to about 3% by weight of the quaternary ammonium compound. ### Claim 8 (depends on 5) The surface of claim 5, wherein the paint comprises about 0.5% to about 1.5% by weight of the quaternary ammonium compound. ### Claim 9 (depends on 1) The surface according to claim 1, wherein the liquid paint further comprises at least about 55% by weight solids and wherein the coating has dry coating thickness of at least about 167.6 microns. ### Claim 10 (depends on 5) The surface of claim 5, wherein the quaternary ammonium compound is substantially free of silicon. ### Claim 11 (depends on 1) The surface of claim 1, wherein the quaternary ammonium compound has the structural formula: where R1 is C8-C18 -alkenyl or -alkenyl, where R2 is C8-C18 -alkyl or -alkenyl, aryl or C7-C18 -aralkyl, in which aromatic rings can additionally be substituted, where R3 is C1-C4-alkyl, where R4 is H or methyl, and where A is chloride, bromide, acetate, propionate, benzoate or sulfate. ### Claim 12 (depends on 1) The surface of claim 1, wherein the biocidal agent comprises one or more of from n-alkyl dimethyl benzyl ammonium chlorides, the n-alkyl being a C8-C18 alkyl, benzalkonium chloride, the alkyl side chain being C8, C10, C12, C14, C16 or C18 or mixtures thereof, n-alkyl dimethyl ethylbenzyl ammonium chlorides, the n-alkyl being a C8-C18alkyl, dialkyl dimethyl ammonium chlorides, the alkyl side chain being C6-C12, n-alkyl dimethyl benzyl ammonium chloride, and dodecyl dimethyl ammonium chloride, octyl decyl dimethyl ammonium chloride, dioctyl dimethyl ammonium chloride, didecyl dimethyl ammonium chloride, or mixtures thereof. ### Claim 13 (depends on 1) The surface according to claim 1, wherein the liquid paint further comprises at least about 15% by weight solids and wherein the coating has dry coating thickness of about 5.7 microns to about 66 microns. ### Claim 14 (depends on 1) The surface according to claim 1, wherein the liquid paint further comprises at least about 35% by weight solids and wherein the coating has dry coating thickness of about 35.5 microns to about 101.6 microns. ### Claim 15 (depends on 1) The surface according to claim 1, wherein the coating has a viscosity of under 120 KU.