# US 10,767,079 B2 · Ice-phobic coating formulations and uses thereof

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- Number: US 10,767,079 B2
- Document ID: US10767079B2
- Status: Granted
- Kind: B2
- Application number: 16/219,568
- Filed: 2018-12-13
- Published: 2019-04-11
- Granted: 2020-09-08
- Earliest claimed: 2014-04-28
- Assignees: Ames Rubber Corporation
- Applicants: Ames Rubber Corporation
- Inventors: Binoy K. Bordoloi; Allen L. Moorefield; Ronald W. Brush; Donald C. Conner, Jr.; Alexander M. Alazraki, Jr.
- Web page: https://patentgrep.com/patent/US10767079B2

## CPC

- C09D 7/61: inorganic
- B05D 1/02: performed by spraying
- C08K 5/053: Polyhydroxylic alcohols
- C08K 5/41: Compounds containing sulfur bound to oxygen
- C08L 83/04: Polysiloxanes
- C09D 7/65: macromolecular (C09D7/41-C09D7/48 take precedence)
- C09D 7/67: {Particle size smaller than 100 nm}
- C09D 7/68: {Particle size between 100-1000 nm}
- C09D 7/69: {Particle size larger than 1000 nm}
- C09D 127/12: containing fluorine atoms
- C09D 183/04: Polysiloxanes
- C09D 183/06: containing silicon bound to oxygen-containing groups (C09D183/12 takes precedence)
- C09D 183/08: containing silicon bound to organic groups containing atoms other than carbon, hydrogen, and oxygen
- C08G 77/12: containing silicon bound to hydrogen
- C08G 77/20: containing silicon bound to unsaturated aliphatic groups
- C08K 3/04: Carbon
- C08K 3/042: {Graphene or derivatives, e.g. graphene oxides}
- C08K 3/22: of metals
- C08K 5/1545: Six-membered rings
- C08K 5/42: Sulfonic acids; Derivatives thereof
- C08K 2003/2241: {Titanium dioxide}
- C08K 2003/265: {Calcium, strontium or barium carbonate}
- 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)
- B05D: PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL (conveying articles or workpieces through baths of liquid B65G, e.g. B65G49/02)
- 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)
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS

## Abstract

Disclosed in certain embodiments is an ice-phobic coating formulation comprising an elastomer, filler particles, and a cryoprotectant.

## Claims

### Claim 1

An ice-phobic coating formed by curing a solventless coating formulation comprising:
an elastomer;
nanoparticles present in an amount from 1 wt % to 5 wt % based on a total weight of the solventless coating formulation; and
a cryoprotectant present in an amount from 1 wt % to 3 wt % based on the total weight of the solventless coating formulation.

### Claim 2 (depends on 1)

The coating of claim 1, wherein a viscosity of the solventless coating formulation is from 750 cSt to 1,500 cSt.

### Claim 3 (depends on 1)

The coating of claim 1, wherein the elastomer comprises one or more of fluoro-elastomer, fluoro-silicone, or silicone.

### Claim 4 (depends on 1)

The coating of claim 1, wherein the nanoparticles comprise one or more of silica, polytetrafluoroethylene (PTFE), polypropylene, graphene, calcium carbonate, or titanium dioxide.

### Claim 5 (depends on 1)

The coating of claim 1, wherein the nanoparticles comprise silica nanoparticles having an average size from 10 nm to 50 nm.

### Claim 6 (depends on 1)

The coating of claim 1, wherein the cryoprotectant comprises one or more of glycerol, trehalose, dimethylsulfoxide (DMSO), or polyvinyl alcohol (PVA).

### Claim 7 (depends on 1)

The coating of claim 1, wherein an ice adhesion failure stress of the coating is from 1 kPa to 20 kPa.

### Claim 8

An ice-phobic coating formulation comprising:
an elastomer;
PTFE nanoparticles present from 1 wt % to 5 wt % based on a total weight of the formulation; and
a cryoprotectant present in an amount from 1 wt % to 3 wt % based on the total weight of the formulation.

### Claim 9 (depends on 8)

The formulation of claim 8, wherein the formulation is a solventless curable coating formulation.

### Claim 10 (depends on 9)

The formulation of claim 9, wherein a viscosity of the solventless curable coating formulation is from 750 cSt to 1,500 cSt.

### Claim 11 (depends on 8)

The formulation of claim 8, wherein the elastomer comprises one or more of fluoro-elastomer, fluoro-silicone, or silicone.

### Claim 12 (depends on 8)

The formulation of claim 8, wherein the PTFE nanoparticles have an average size from 100 nm to 300 nm.

### Claim 13 (depends on 8)

The formulation of claim 8, wherein the cryoprotectant comprises one or more of glycerol, trehalose, DMSO, or PVA.

### Claim 14

A method of forming an ice-phobic coating, the method comprising: spraying a formulation onto a surface, the formulation comprising:
an elastomer;
nanoparticles present in an amount from 1 wt % to 5 wt % based on a total weight of the formulation; and
glycerol present in an amount from 1 wt % to 3 wt % based on the total weight of the formulation; and
allowing the formulation to cure to form the ice-phobic coating.

### Claim 15 (depends on 14)

The method of claim 14, further comprising:
depositing a silane-based primer layer onto the surface prior to depositing the formulation.

### Claim 16 (depends on 14)

The method of claim 14, wherein the nanoparticles comprise one or more of silica, polytetrafluoroethylene (PTFE), polypropylene, graphene, calcium carbonate, or titanium dioxide.

### Claim 17 (depends on 14)

The method of claim 14, wherein the nanoparticles comprise PTFE nanoparticles, and wherein the PTFE nanoparticles have an average size ranging from 100 nm to 300 nm.

### Claim 18 (depends on 14)

The method of claim 14, wherein an ice adhesion failure stress of the coating is from 1 kPa to 20 kPa.