# US 2024/0199892 A1 · Hydrophobic and superhydrophobic coatings and method of making at room temperature

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2024/0199892 A1
- Document ID: US20240199892A1
- Status: Published application
- Kind: A1
- Application number: 18/390,023
- Filed: 2023-12-20
- Published: 2024-06-20
- Earliest claimed: 2022-12-20
- Assignees: Technology Innovatin Institute - Sole Proprietorship LLC
- Applicants: Technology Innovation iInstitute = Sole Proprietorship LLC
- Inventors: Zineb Matouk; Abdulla Al Shehhi; Monserrat gutierrez Munoz; Shroq Al Zadjali; Eva Correia; Afra Saeed Mubarak Jezaie Alketbi
- Web page: https://patentgrep.com/patent/US20240199892A1

## CPC

- C08K 9/06: with silicon-containing compounds
- C09D 5/1668: {Vinyl-type polymers}
- C09D 5/1618: {inorganic}
- C09D 5/1675: {Polyorganosiloxane-containing compositions}
- C09D 5/1681: {Antifouling coatings characterised by surface structure, e.g. for roughness effect giving superhydrophobic coatings or Lotus effect}
- C09D 7/41: Organic pigments; Organic dyes
- C09D 7/62: modified by treatment with other compounds
- C09D 7/67: {Particle size smaller than 100 nm}
- C09D 127/18: Homopolymers or copolymers of tetrafluoroethene
- C09D 129/10: Homopolymers or copolymers of unsaturated ethers (C09D135/08 takes precedence)
- C08K 3/36: Silica
- C08K 9/00: Use of pretreated ingredients
- C08K 2201/011: Nanostructured additives
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)
- 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)

## Abstract

The present disclosure provides coating compositions which are transparent and hydrophobic or superhydrophobic. The coating composition may include a compound with hydrophobic moieties and a transparent binder. Methods of preparing such coatings at room temperature are also provided, along with methods of providing a transparent and hydrophobic or superhydrophobic coating to a surface. The coating compositions of the present disclosure may exhibit a transparency of at least about 95%.

## Claims

### Claim 1

A coating composition, comprising:
a hydrophobic compound;
a binder; and
a solvent;
wherein the coating composition is hydrophobic and transparent; and
wherein the coating composition is processable at room temperature.

### Claim 2 (depends on 1)

The coating composition of claim 1, wherein the hydrophobic compound comprises silicon dioxide nanostructures, titanium dioxide nanostructures, zinc oxide nanostructures, aluminum oxide nanostructures, aluminosilicates, dimethyldiethoxysilane, trimethylethoxysilane, bis(trimethylsilyl) amine, isooctyltriethoxysilane, octadecyltriethoxysilane, dodecyldimethylethoxysilane, (3,3,3-trifluoropropyl) trimethoxysilane, (heptadecafluoro-1,1,2,2-tetrahydrodecyl) triethoxysilane, or combinations thereof.

### Claim 3 (depends on 1)

The coating composition of claim 1, wherein the coating composition comprises 0.01 wt. % to 7 wt. % of the hydrophobic compound.

### Claim 4 (depends on 1)

The coating composition of claim 1, wherein the binder comprises a fluoropolymer, an organically modified silicate, a functional polydimethylsiloxane copolymer, or combinations thereof.

### Claim 5 (depends on 1)

The coating composition of claim 1, wherein the binder comprises fluoroethylene vinyl ether, polyvinyl fluoride, polyvinylidene fluoride, tetrafluoroethylene, hexafluoropropylene, vinylidene fluoride, hexafluoropropylene, tetrafluoroethylene, ethylene, tetraethoxysilane, methyltriethoxysilane, dimethyldiethoxysilane, silanol terminated polydimethylsiloxane, epoxypropoxypropyl terminated polydimethylsiloxane, aminopropyl terminated polydimethylsiloxane, ethoxy terminated polydimethylsiloxane, hydride terminated polydimethylsiloxane, or combinations thereof.

### Claim 6 (depends on 1)

The coating composition of claim 1, wherein the coating composition comprises 10 wt. % to 90 wt. % of the binder.

### Claim 7 (depends on 1)

The coating composition of claim 1, wherein the solvent comprises N-methylpyrrolidone, N-dimethylformamide, N,N-dimethylacetamide, xylene, n-butyl acetate, t-butyl acetate, p-chlorobenzotrifluoride, acetone, dimethyl carbonate, propylene carbonate, methyl ethyl ketone, methyl amyl ketone, methyl propyl ketone, methyl butyl ketone, 1-methoxy-2-propyl acetate, ethyl 3-ethoxy propionate, ethylene glycol monopropyl ether, ethyl acetate, methyl acetate, water, methanol, ethanol, propanol, isopropanol, butanol, butyl acetate, or combinations thereof.

### Claim 8 (depends on 1)

The coating composition of claim 1, wherein the coating composition comprises about 10 wt. % to about 90 wt. % of the solvent.

### Claim 9 (depends on 1)

The coating composition of claim 1, wherein the coating composition has a contact angle between greater than or equal to 90° and less than or equal to 180°.

### Claim 10 (depends on 1)

The coating composition of claim 1, wherein the coating composition is superhydrophobic.

### Claim 11 (depends on 1)

The coating composition of claim 1, wherein the coating composition has a transmittance of greater than or equal to 95%.

### Claim 12

A method of making a coating composition, comprising:
providing a binder and a hydrophobic compound; and
preparing a coating solution comprising the binder, the hydrophobic compound, and a solvent.

### Claim 13 (depends on 12)

The method of claim 12, wherein the binder comprises fluoroethylene vinyl ether, polyvinyl fluoride, polyvinylidene fluoride, tetrafluoroethylene, hexafluoropropylene, vinylidene fluoride, hexafluoropropylene, tetrafluoroethylene, ethylene, tetraethoxysilane, methyltriethoxysilane, dimethyldiethoxysilane, silanol terminated polydimethylsiloxane, epoxypropoxypropyl terminated polydimethylsiloxane, aminopropyl terminated polydimethylsiloxane, ethoxy terminated polydimethylsiloxane, hydride terminated polydimethylsiloxane, or combinations thereof.

### Claim 14 (depends on 12)

The method of claim 12, wherein the hydrophobic compound comprises silicon dioxide nanostructures, titanium dioxide nanostructures, zinc oxide nanostructures, aluminum oxide nanostructures, aluminosilicates, dimethyldiethoxysilane, trimethylethoxysilane, bis(trimethylsilyl) amine, isooctyltriethoxysilane, octadecyltriethoxysilane, dodecyldimethylethoxysilane, (3,3,3-trifluoropropyl) trimethoxysilane, (heptadecafluoro-1,1,2,2-tetrahydrodecyl) triethoxysilane, or combinations thereof.

### Claim 15 (depends on 12)

The method of claim 12, wherein the solvent comprises N-methylpyrrolidone, N-dimethylformamide, N,N-dimethylacetamide, xylene, n-butyl acetate, t-butyl acetate, p-chlorobenzotrifluoride, acetone, dimethyl carbonate, propylene carbonate, methyl ethyl ketone, methyl amyl ketone, methyl propyl ketone, methyl butyl ketone, 1-methoxy-2-propyl acetate, ethyl 3-ethoxy propionate, ethylene glycol monopropyl ether, ethyl acetate, methyl acetate, water, methanol, ethanol, propanol, isopropanol, butanol, butyl acetate, or combinations thereof.

### Claim 16 (depends on 12)

The method of claim 12, further comprising preparing a hydrophobic solution comprising the hydrophobic compound and the solvent.

### Claim 17 (depends on 16)

The method of claim 16, wherein preparing the coating solution comprises combining the binder with the hydrophobic solution.

### Claim 18 (depends on 12)

The method of claim 12, further comprising preparing a binder solution comprising the binder and the solvent.

### Claim 19 (depends on 18)

The method of claim 18, wherein preparing the coating solution comprises combining the hydrophobic compound with the binder solution.

### Claim 20 (depends on 12)

The method of claim 12, wherein preparing the coating solution comprises combining a solution of the binder in the solvent with a solution of the hydrophobic compound in the solvent.

### Claim 21 (depends on 12)

The method of claim 12, wherein preparing the coating solution comprises combining the binder and the hydrophobic compound in the solvent.

### Claim 22

A method of providing a transparent and hydrophobic coating to a surface, comprising:
applying a coating composition which comprises a hydrophobic compound, a binder, and a solvent to the surface.

### Claim 23 (depends on 22)

The method of claim 22, wherein the surface comprises a metal, a metallic alloy, glass, plastic, ceramics, polymer, fabrics, wood, concrete, or combinations thereof.

### Claim 24 (depends on 22)

The method of claim 22, wherein the hydrophobic compound comprises silicon dioxide nanostructures, titanium dioxide nanostructures, zinc oxide nanostructures, aluminum oxide nanostructures, aluminosilicates, dimethyldiethoxysilane, trimethylethoxysilane, bis(trimethylsilyl) amine, isooctyltriethoxysilane, octadecyltriethoxysilane, dodecyldimethylethoxysilane, (3,3,3-trifluoropropyl) trimethoxysilane, (heptadecafluoro-1,1,2,2-tetrahydrodecyl) triethoxysilane, or combinations thereof.

### Claim 25 (depends on 22)

The method of claim 22, wherein the binder comprises fluoroethylene vinyl ether, polyvinyl fluoride, polyvinylidene fluoride, tetrafluoroethylene, hexafluoropropylene, vinylidene fluoride, hexafluoropropylene, tetrafluoroethylene, ethylene, tetraethoxysilane, methyltriethoxysilane, dimethyldiethoxysilane, silanol terminated polydimethylsiloxane, epoxypropoxypropyl terminated polydimethylsiloxane, aminopropyl terminated polydimethylsiloxane, ethoxy terminated polydimethylsiloxane, hydride terminated polydimethylsiloxane, or combinations thereof.

### Claim 26 (depends on 22)

The method of claim 22, wherein the solvent comprises N-methylpyrrolidone, N-dimethylformamide, N,N-dimethylacetamide, xylene, n-butyl acetate, t-butyl acetate, p-chlorobenzotrifluoride, acetone, dimethyl carbonate, propylene carbonate, methyl ethyl ketone, methyl amyl ketone, methyl propyl ketone, methyl butyl ketone, 1-methoxy-2-propyl acetate, ethyl 3-ethoxy propionate, ethylene glycol monopropyl ether, ethyl acetate, methyl acetate, water, methanol, ethanol, propanol, isopropanol, butanol, butyl acetate, or combinations thereof.

### Claim 27 (depends on 22)

The method of claim 22, wherein applying the coating composition to the surface comprises roll coating, drop rolling, spraying, dip coating, blade coating, flow coating, spin-coating, aerosol deposition, ultrasound deposition, electrical deposition, inkjet printing, spray-jet printing, xerography, silk printing, dot matrix printing, or combinations thereof.

### Claim 28 (depends on 22)

The method of claim 22, wherein the coating composition is applied at room temperature.

### Claim 29 (depends on 22)

The method of claim 22. wherein the coating composition is superhydrophobic.