# US 8,772,390 B1 · Sprayable polymeric coating system for the protection of complex metal structures against corrosion

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- Number: US 8,772,390 B1
- Document ID: US8772390B1
- Status: Granted
- Kind: B1
- Application number: 13/549,023
- Filed: 2012-07-13
- Granted: 2014-07-08
- Earliest claimed: 2011-07-13
- Assignees: Oxifree Holdings Corp
- Applicants: Thomas Georg Fink; Emilio Cesar Castro
- Inventors: Thomas Georg Fink; Emilio Cesar Castro
- Web page: https://patentgrep.com/patent/US8772390B1

## CPC

- C09D 191/00: Coating compositions based on oils, fats or waxes; Coating compositions based on derivatives thereof (polishing compositions, ski waxes C09G)
- C09D 101/14: Mixed esters, e.g. cellulose acetate-butyrate
- C08K 5/1515: Three-membered rings
- C08K 2003/2241: {Titanium dioxide}
- C08K 2201/014: Additives containing two or more different additives of the same subgroup in C08K
- C08L 2205/02: containing two or more polymers of the same C08L -group
- 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)
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)

## Abstract

A method of applying a protective polymeric coating to a substrate has the steps of mixing a cellulose acetate buterate and a plasticizer and a corrosion inhibitor together to form a solid mixture, heating the solid mixture so as to form a liquid state, painting the substrate with the liquid state, and drying the liquid state on the substrate for a period of time. The step of painting can include spraying the liquid state of the mixture onto the substrate. The plasticizer is an epoxidized fatty acid ester. The corrosion inhibitor is epoxidized canola oil. Additionally, epoxidized soil bean oil, silica amorphous and titanium dioxide can be mixed together.

## Claims

### Claim 1

A polymeric coating composition consisting of:
a cellulose acetate butyrate in an amount of 29% by weight of total composition;
an epoxidized fatty acid ester in an amount of 26% by weight of total composition;
an epoxidized canola oil in an amount of 36% by weight of the total composition
an epoxidized soy bean oil in an amount of 6% by weight of the total composition;
a premixture in an amount of 3% by weight of the total composition, wherein said premixture consists of a mixture of silica amorphous and a stabilizer; and said stabilizer is selected from the group consisting of titanium dioxide or aluminum hydroxide.