# US 10,308,815 B2 · Durable coating compositions and coatings formed thereof

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- Number: US 10,308,815 B2
- Document ID: US10308815B2
- Status: Granted
- Kind: B2
- Application number: 15/789,639
- Filed: 2017-10-20
- Published: 2018-04-26
- Granted: 2019-06-04
- Earliest claimed: 2016-10-20
- Assignees: General Cable Technologies Corporation
- Applicants: General Cable Technologies Corporation; Novota Industries
- Inventors: Sathish Kumar Ranganathan; Srinivas Siripurapu; Satish Narayan Patil; Rajendra Yashwant Chaudhari
- Web page: https://patentgrep.com/patent/US10308815B2

## CPC

- C09D 1/04: with organic additives
- C09D 5/00: Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced {(electrically insulating plastics, resins or waxes H01B3/30)}; Filling pastes
- C09D 5/1612: {Non-macromolecular compounds}
- C09D 5/1618: {inorganic}
- C09D 5/1675: {Polyorganosiloxane-containing compositions}
- C09D 7/62: modified by treatment with other compounds
- C09D 183/04: Polysiloxanes
- C09D 183/10: Block or graft copolymers containing polysiloxane sequences (obtained by polymerising a compound having a carbon-to-carbon double bond on to a polysiloxane C09D151/08, C09D153/00)
- H02G 7/16: Devices for removing snow or ice from lines or cables
- C08G 77/442: containing vinyl polymer sequences
- C08G 77/458: containing polyurethane sequences
- C08K 2003/2227: {of aluminium}
- H01B 5/08: Several wires or the like stranded in the form of a rope
- 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)
- H02G: INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)
- H01B: CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES (selection for magnetic properties H01F1/00; waveguides H01P {; printed circuits H05K})

## Abstract

A durable coating composition which reduces ice adherence and minimizes ice accumulation includes a silicate binder, a silane-modified filler, a film forming lubricant, and a crosslinking agent. Articles and overhead conductors coated with such coating compositions are also disclosed.

## Claims

### Claim 1

A coating composition comprising:
a silicate binder;
a hydrophobically-modified filler comprising an average particle size of about 20 microns or less and a dielectric constant of about 20 or less;
a film forming lubricant comprising a hydrophobic polymer dispersion; wherein the hydrophobic polymer dispersion comprises one or more of an acrylic resin dispersion and a polyurethane resin dispersion; and
a crosslinking agent comprising one or more of magnesium hydroxide and magnesium oxide.

### Claim 2 (depends on 1)

The coating composition of claim 1, wherein the silicate binder comprises an alkali metal silicate.

### Claim 3 (depends on 2)

The coating composition of claim 2, wherein the alkali metal silicate comprises one or more of potassium silicate, sodium silicate, lithium silicate, and calcium silicate.

### Claim 4 (depends on 1)

The coating composition of claim 1, wherein the hydrophobically-modified filler comprises a hydrophobically-modified metal oxide.

### Claim 5 (depends on 4)

The coating composition of claim 4, wherein the hydrophobically-modified metal oxide comprises one or more of alumina, silica, magnesium silica, silicon carbide, calcined clay, zirconium dioxide, and zirconium silicate.

### Claim 6 (depends on 5)

The coating composition of claim 5, wherein the hydrophobically-modified metal oxide is hydrophobically modified by a silane compound comprising one or more of octyl trimethoxy silane, methyl trimethoxy silane, phenyl trimethoxy silane, and dimethyl dichloro silane.

### Claim 7 (depends on 1)

The coating composition of claim 1, wherein each of the acrylic resin dispersion and the polyurethane resin dispersion are hydrophobically modified by a reactive functional silicone intermediate.

### Claim 8 (depends on 1)

The coating composition of claim 1, further comprising water.

### Claim 9 (depends on 1)

The coating composition of claim 1 comprises, on a dry weight basis: about 10% to about 50% of the silicate binder; about 30% to about 70% of the silane-modified filler; about 5% to about 30% of the film forming lubricant; and about 2% to about 20% of the crosslinking agent.

### Claim 10 (depends on 1)

The coating composition of claim 1 having two parts; wherein the first part comprises the silane-modified filler, the film forming lubricant, and the crosslinking agent; and wherein the second part comprises the silicate binder.

### Claim 11 (depends on 1)

An overhead conductor comprising a bare conductor substantially coated with a coating formed from the coating composition of claim 1.

### Claim 12 (depends on 11)

The overhead conductor of claim 11 passes a 0.5 inch Mandrel Bend Test.

### Claim 13 (depends on 11)

The overhead conductor of claim 11 passes a 0.5 inch Mandrel Bend Test after heat aging at 200° C. for 7 days.

### Claim 14 (depends on 11)

The overhead conductor of claim 11 operates about 5° C. or cooler when tested in accordance to ANSI C119.4-2004 than the bare conductor.

### Claim 15 (depends on 11)

The overhead conductor of claim 11, wherein ice adheres with about 140 kPa or less of force according to the Ice Adherence Test.

### Claim 16 (depends on 11)

The overhead conductor of claim 11 exhibits a water contact angle of about 50° to about 140°.

### Claim 17 (depends on 11)

The overhead conductor of claim 11, exhibits an increase in ice adherence strength after water aging at about 90° C. for 7 days of about 50% or less compared to the ice adherence strength of an unaged coated overhead conductor.

### Claim 18 (depends on 11)

The overhead conductor of claim 11, exhibits an increase in ice adherence strength after heat aging at about 200° C. for 30 days of about 50% or less compared to the ice adherence strength of an unaged coated overhead conductor.

### Claim 19 (depends on 1)

An article comprising a substrate substantially coated with a coating formed from the coating composition of claim 1.