# US 2020/0399500 A1 · Chemical Agent Resistant Coating Compositions > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2020/0399500 A1 - Document ID: US20200399500A1 - Status: Published application - Kind: A1 - Application number: 16/822,339 - Filed: 2020-03-18 - Published: 2020-12-24 - Earliest claimed: 2014-03-05 - Assignees: PPG Industries Ohio, Inc. - Applicants: PPG Industries Ohio, Inc. - Inventors: Lawrence J. Fitzgerald; Anthony M. Chasser; DeAnna D. Katz - Web page: https://patentgrep.com/patent/US20200399500A1 ## CPC - C09D 127/12: containing fluorine atoms - C09D 5/03: Powdery paints - C09D 133/06: of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical - C09D 191/06: Waxes - C08K 3/22: of metals - C08K 2003/2227: {of aluminium} - 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 chemical agent resistant coating composition can include a fluoropolymer, a dispersible acrylic resin, a flatting agent, and a hydrophobic additive. The coating composition can include at least 10 weight % of the flatting agent based on the total solids weight of the coating composition, and the flatting agent can include ground fiberglass, a hyperbranched (meth)acrylic resin, and an additional flatting agent. The hydrophobic additive can include a wax. When the composition is applied to a substrate and cured as a coating, the coating has an 85° gloss of less than 3.5, a water contact angle of greater than 80°, and desorbs a maximum of 180 micrograms of bis(2-chloroethyl) sulfide and a maximum of 40 micrograms of O-pinacolyl methylphosphonofluoridate, according to testing under MIL-PRF-32348. A method of preparing chemical agent resistant coating compositions and substrates at least partially coated with the chemical agent resistant coating compositions are also disclosed. ## Claims ### Claim 1 A chemical agent resistant coating composition comprising: a fluoropolymer, a dispersible acrylic resin; a flatting agent comprising at least 10 weight % based on the total solids weight of the coating composition, wherein the flatting agent comprises: (i) ground fiberglass; (ii) a hyperbranched (meth)acrylic resin different from the dispersible acrylic resin; and (iii) an additional flatting agent different from components (i) and (ii); and a hydrophobic additive comprising a wax, wherein when the composition is applied to a substrate and cured as a coating, the coating has an 85° gloss of less than 3.5, a water contact angle of greater than 80°, and desorbs a maximum of 180 micrograms of bis(2-chloroethyl) sulfide and a maximum of 40 micrograms of O-pinacolyl methylphosphonofluoridate, according to testing under MIL-PRF-32348. ### Claim 2 (depends on 1) The coating composition of claim 1, wherein the additional component (iii) comprises a metal hydroxide, a metal oxide, a poly(urea) particle, silica, or mixtures thereof. ### Claim 3 (depends on 2) The coating composition of claim 2, wherein the additional component (iii) comprises aluminum hydroxide. ### Claim 4 (depends on 2) The coating composition of claim 2, wherein the additional component (iii) comprises aluminum oxide. ### Claim 5 (depends on 1) The coating composition of claim 1, wherein the fluoropolymer comprises polyvinylidene fluoride, chlorotrifluoroethylene copolymer, or a combination thereof. ### Claim 6 (depends on 1) The coating composition of claim 1, wherein the fiberglass comprises an average size dimension of 30 to 70 microns. ### Claim 7 (depends on 1) The coating composition of claim 1, wherein the wax is a fluorinated wax. ### Claim 8 (depends on 1) The coating composition of claim 1, wherein the wax comprises polytetrafluoroethylene wax, polytetrafluoroethylene-modified polyethylene wax, polytetrafluoroethylene-modified polypropylene wax, polyethylene wax, polypropylene wax, paraffinic wax, carnauba wax, silicone wax, or combinations thereof. ### Claim 9 (depends on 1) The coating composition of claim 1, wherein the coating composition comprises an inorganic mineral. ### Claim 10 (depends on 1) The coating composition of claim 1, wherein the dispersible acrylic resin has an acid value of 30 to 100 mg KOH/g. ### Claim 11 (depends on 1) The coating composition of claim 1, wherein the dispersible acrylic resin comprises greater than 50 weight % methyl (meth)acrylate based on the total weight of the acrylic resin. ### Claim 12 (depends on 1) The coating composition of claim 1, wherein the dispersible acrylic resin has a glass transition temperature of greater than 40° C. ### Claim 13 (depends on 1) The coating composition of claim 1, wherein the fluoropolymer comprises from 20 to 40 weight % based on the total solid weight of the coating composition. ### Claim 14 (depends on 13) The coating composition of claim 13, wherein the dispersible acrylic resin comprises from 30 to 50 weight % based on the total solid weight of the coating composition. ### Claim 15 (depends on 1) The coating composition of claim 1, wherein the coating composition is a powder coating composition. ### Claim 16 (depends on 1) The coating composition of claim 1, wherein the coating composition is completely free of a crosslinker. ### Claim 17 (depends on 1) The coating composition of claim 1, wherein when the composition is applied to a substrate and cured as a coating, the coating has a 60° gloss of equal to or less than 1.0. ### Claim 18 (depends on 1) A substrate at least partially coated with the coating composition of claim 1. ### Claim 19 A method of preparing a chemical agent resistant coating composition comprising mixing: a fluoropolymer; a dispersible acrylic resin; a flatting agent comprising at least 10 weight % based on the total solids weight of the coating composition, wherein the flatting agent comprises: (i) ground fiberglass; (ii) a hyperbranched (meth)acrylic resin different from the dispersible acrylic resin; and (iii) an additional flatting agent different from components (i) and (ii); and a hydrophobic additive comprising a wax; wherein when the coating composition is applied to a substrate and cured as a coating, the coating has an 85° gloss of less than 3.5, a water contact angle of greater than 80°, and desorbs a maximum of 180 micrograms of bis(2-chloroethyl) sulfide and a maximum of 40 micrograms of O-pinacolyl methylphosphonofluoridate, according to testing under MIL-PRF-32348. ### Claim 20 (depends on 19) The method of claim 19, further comprising dispersing the mixture in water. ### Claim 21 (depends on 20) The method of claim 20, further comprising drying the mixture to form a powder coating composition.