# US 2025/0084273 A1 · Uv curable coatings system for improved scratch resistance > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0084273 A1 - Document ID: US20250084273A1 - Status: Published application - Kind: A1 - Application number: 18/882,839 - Filed: 2024-09-12 - Published: 2025-03-13 - Earliest claimed: 2023-09-13 - Assignees: Swimc LLC - Applicants: Swimc LLC - Inventors: Bradley J. WINKLE; Christopher BERLINGHOF; Aaron COOPER; Randolph G. COX; Jigarkumar B. PATEL; Kyle PATMORE; Christine BOPP; Brian L. BROWN - Web page: https://patentgrep.com/patent/US20250084273A1 ## CPC - C09D 135/02: Homopolymers or copolymers of esters (C09D135/06, C09D135/08 take precedence) - C08F 222/103: {of trialcohols, e.g. trimethylolpropane tri(meth)acrylate} - C09D 5/002: {Priming paints (C09D5/08 takes precedence)} - C09D 7/62: modified by treatment with other compounds - 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) - C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS ## Abstract A coatings system for improved scratch resistance is provided. The coatings system comprises: 1) a primer comprising a difunctional (meth)acrylate ester monomer, a first multifunctional (meth)acrylate, and a first silane-treated aluminum oxide; and 2) a topcoat comprising a difunctional (meth)acrylate ester monomer, a second multifunctional (meth)acrylate, and a second silane-treated aluminum oxide. Further, the coatings system may be UV curable or another type of radiation curable. A method of preparing the coatings system and an article coated with the coatings system are also described. ## Claims ### Claim 1 A coatings system comprising: a primer comprising a difunctional (meth)acrylate ester monomer, a first multifunctional (meth)acrylate, and a first silane-treated aluminum oxide; and a topcoat comprising a difunctional (meth)acrylate ester monomer, a second multifunctional (meth)acrylate, and a second silane-treated aluminum oxide. ### Claim 2 (depends on 1) The coatings system of claim 1, wherein the difunctional (meth)acrylate ester monomer is 1,6-hexanediol diacrylate (HDDA), 1,6-hexanediol dimethacrylate (HDDMA), 1,4-butanediol dimethacrylate (BDDMA), 3-methyl-1,5-pentanediol diacrylate (MPDDA), 1,10-decanediol diacrylate (DDDA), tripropylene glycol diacrylate (TPGDA), dipropylene glycol diacrylate (DPGDA), triethylene glycol diacrylate (TEGDA), polyethylene glycol diacrylate, neopentyl glycol methacrylate (NPGMA), ethylene glycol dimethacrylate (EGDMA), diethylene glycol dimethacrylate (DEGMA), triethylene glycoldimethacrylate (TEGDMA), tetraethylene glycoldimethacrylate (T4EGDMA), hydroxy pivalic acid neopentyl glycol diacrylate (HPNDA), aliphatic difunctional urethane (meth)acrylate, aromatic difunctional urethane (meth)acrylate, difunctional polyester (meth)acrylate, or combinations thereof. ### Claim 3 (depends on 1) The coatings system of claim 1, wherein the first multifunctional (meth)acrylate is at least trifunctional. ### Claim 4 (depends on 1) The coatings system of claim 1, wherein the first multifunctional (meth)acrylate is dimethylolpropane triacrylate (TMPTA), pentaerythritol triacrylate (PETA), trimethylolpropane triacrylate (TMPTA), trimethylolpropane trimethacrylate (TMPTMA), pentaerythritol tetraacryate (PETTA), dipentaerythritol pentaacryate (DiPETA), dipentaerythritol hexaacryate (DPHA), aliphatic trifunctional urethane (meth)acrylate, aromatic trifunctional urethane (meth)acrylate, aliphatic tetrafunctional urethane (meth)acrylate, aromatic tetrafunctional urethane (meth)acrylate, aliphatic hexafunctional urethane (meth)acrylate, aromatic hexafunctional urethane (meth)acrylate, trifunctional polyester (meth)acrylate, tetrafunctional polyester (meth)acrylate, hexafunctional polyester (meth)acrylate, or combinations thereof. ### Claim 5 (depends on 1) The coatings system of claim 1, wherein the first silane-treated aluminum oxide comprises fused aluminum oxide, calcined aluminum oxide, or a combination thereof. ### Claim 6 (depends on 1) The coatings system of claim 1, wherein the first silane-treated aluminum oxide is at least 5% by weight of the primer. ### Claim 7 (depends on 1) The coatings system of claim 1, wherein the second multifunctional (meth)acrylate is at least trifunctional. ### Claim 8 (depends on 1) The coatings system of claim 1, wherein the second multifunctional (meth)acrylate is dimethylolpropane triacrylate (TMPTA), pentaerythritol triacrylate (PETA), trimethylolpropane triacrylate (TMPTA), trimethylolpropane trimethacrylate (TMPTMA), pentaerythritol tetraacryate (PETTA), dipentaerythritol pentaacryate (DiPETA), dipentaerythritol hexaacryate (DPHA), aliphatic trifunctional urethane (meth)acrylate, aromatic trifunctional urethane (meth)acrylate, aliphatic tetrafunctional urethane (meth)acrylate, aromatic tetrafunctional urethane (meth)acrylate, aliphatic hexafunctional urethane (meth)acrylate, aromatic hexafunctional urethane (meth)acrylate, trifunctional polyester (meth)acrylate, tetrafunctional polyester (meth)acrylate, hexafunctional polyester (meth)acrylate, or combinations thereof. ### Claim 9 (depends on 1) The coatings system of claim 1, wherein the second silane-treated aluminum oxide comprises calcined aluminum oxide, fused aluminum oxide, or a combination thereof. ### Claim 10 (depends on 1) The coatings system of claim 1, wherein the second silane-treated aluminum oxide is at least 1% by weight of the topcoat. ### Claim 11 (depends on 1) The coatings system of claim 1, wherein the first silane-treated aluminum oxide and the second silane-treated aluminum oxide are different silane-treated aluminum oxides. ### Claim 12 (depends on 1) The coatings system of claim 1, wherein the first silane-treated aluminum oxide and the second silane-treated aluminum oxide are the same silane-treated aluminum oxide. ### Claim 13 (depends on 1) The coatings system of claim 1 further comprising at least one: other polymer or polymer dispersion, solvent, biocide, mildewcide, algaecide, leveling agent, anti-settling agent, pH buffer, corrosion inhibitor, drier, anti-skinning agent, anti-cratering agent, anti-sag agent, heat stabilizer, UV absorber/inhibitor, HALS (hindered amine light stabilizer), antioxidant, wetting agent, flatteners and other inert pigments (such as titanium dioxide, dyes, clay, amorphous and surface treated silica, calcium carbonate, and the like, and combinations thereof), flow agent, catalyst, flow aid, anti-corrosive agent, adhesion promotor, toughening agent, or combinations thereof. ### Claim 14 (depends on 1) The coatings system of claim 1 further comprising at least one additional primer coated onto the primer. ### Claim 15 (depends on 1) The coatings system claim 1 further comprising at least one additional topcoat coated onto the topcoat. ### Claim 16 (depends on 1) The coatings system of claim 1 further comprising at least one clear coat coated on the topcoat or at least one additional topcoat. ### Claim 17 (depends on 1) The coatings system of claim 1, wherein the coatings system is cured by ultraviolet (UV), electron beam, infrared, heat, or combinations thereof. ### Claim 18 (depends on 1) A method of preparing the coatings system of claim 1. ### Claim 19 (depends on 1) An article comprising the coatings system of claim 1, wherein the coatings system is applied to at least one substrate. ### Claim 20 (depends on 19) The article of claim 19, wherein at least one substrate comprises wood, metal, concrete, paper, ceramic, plastic, composites, or combinations thereof.