# US 8,541,486 B2 · Coating compositions exhibiting corrosion resistance properties, related coated substrates, and methods

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

- Number: US 8,541,486 B2
- Document ID: US8541486B2
- Status: Granted
- Kind: B2
- Application number: 13/647,026
- Filed: 2012-10-08
- Published: 2013-02-07
- Granted: 2013-09-24
- Earliest claimed: 2005-08-26
- Assignees: PRC-DeSoto International, Inc.
- Applicants: PRC-DeSoto International, Inc.
- Inventors: Edward R. Millero; John R. Schneider; Cheng-Hung Hung; Noel R. Vanier
- Web page: https://patentgrep.com/patent/US8541486B2

## CPC

- C09D 7/67: {Particle size smaller than 100 nm}
- B82Y 30/00: Nanotechnology for materials or surface science, e.g. nanocomposites
- C09D 5/084: {Inorganic compounds}
- C09D 7/48: Stabilisers against degradation by oxygen, light or heat
- C09D 7/68: {Particle size between 100-1000 nm}
- C08K 3/22: of metals
- C08K 3/32: Phosphorus-containing compounds
- C08K 3/34: Silicon-containing compounds
- C08K 3/38: Boron-containing compounds
- Y10S 977/778: within specified host or matrix material, e.g. nanocomposite films
- Y10S 977/779: Possessing nanosized particles, powders, flakes, or clusters other than simple atomic impurity doping
- Y10T 428/256: Heavy metal or aluminum or compound thereof
- Y10T 428/258: Alkali metal or alkaline earth metal or compound thereof
- Y10T 428/259: Silicic material
- Y10T 428/2991: Coated
- Y10T 428/31522: Next to metal
- Y10T 428/31529: Next to metal
- Y10T 428/31663: As siloxane, silicone or silane
- Y10T 428/31678: Of metal
- Y10T 428/31855: Of addition polymer from unsaturated monomers
- 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)
- B82Y: SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

Coating compositions are disclosed that include corrosion resisting particles such that the coating composition can exhibit corrosion resistance properties. Also disclosed are substrates at least partially coated with a coating deposited from such a composition and multi-component composite coatings, wherein at least one coating later is deposited from such a coating composition. Methods and apparatus for making ultrafine solid particles are also disclosed.

## Claims

### Claim 1

A coating composition comprising:
(a) a thermosetting film-forming resin comprising epoxy groups;
(b) particles comprising magnesium oxide and having an average primary particle size of no more than 100 nanometers, and
(c) an alkoxy-monosilane.

### Claim 2

A coating composition comprising:
(a) a thermosetting film-forming resin;
(b) particles comprising magnesium oxide and having an average primary particle size of no more than 100 nanometers; and
(c) an alkoxy-monosilane.

### Claim 3 (depends on 2)

The coating composition of claim 2, wherein the particles comprise 8 to 30 percent of the coating composition based on total volume of the coating composition.

### Claim 4 (depends on 2)

The coating composition of claim 2, wherein the thermosetting film-forming resin comprises 40 to 90 percent of the coating composition based on total weight of the coating composition.

### Claim 5 (depends on 2)

The coating composition of claim 2, wherein the thermosetting film-forming resin comprises epoxy groups, and the coating composition further comprises a curing agent comprising a polyamine.

### Claim 6 (depends on 2)

The coating composition of claim 2, further comprising an adhesion promoting component comprising at least one of:
(a) tannic acid, gallic acid, phosphoric acid, phosphorous acid, citric acid, malonic acid, a derivative thereof, or a mixture thereof;
(b) a metal phosphate;
(c) an organophosphate;
(d) an organophosphonate; and
(e) a phosphatized epoxy resin.

### Claim 7 (depends on 2)

The coating composition of claim 2, wherein the coating composition is substantially free of chromium containing material.